List of IATA airline codes
The IATA codes for airlines - also known as a two-letter codes (English two letter codes ) - are from the International Air Transport Association awarded (IATA) based on Resolution 762 and consist of a combination of two letters and / or numbers. They are mainly - but not only - used when issuing air tickets (English ticketing ) and in passenger information systems and form the first two digits of a flight number (for example FR 439).
Due to the relatively small number of possible combinations (36 × 36 = 1296), many codes have been assigned several times throughout history. Identical codes can also be used by two different companies at the same time, but only if the airlines in question have different operational areas. For example, the US regional airline Skyway Airlines and the Belarusian freight company Trans Avia Export used the code AL at the same time .
Older airlines often confuse the IATA code and the ICAO code . Because both institutions used identical codes until 1982 and these were only two-digit, the terms IATA code and ICAO code did not yet exist. There was general talk of two-letter airline designators . Based on the code of an airline alone, it was therefore impossible to draw any conclusions as to whether it was a member of the IATA airline association . When an airline joined IATA, its existing two-digit ICAO code was used unchanged as the IATA code. In the 1970s , the airline airline Lufthansa used its abbreviation LH in a double function as the ICAO and IATA code. At that time, cargo airlines and charter airlines , such as Germanair or Hapag-Lloyd Flug , were not IATA members, so that their respective two-letter airline designator only served as an ICAO code. In 1982 the ICAO introduced three-digit codes on a trial basis, but they only became their new official standard system on November 1, 1987 after a five-year transition phase. At the same time, IATA expanded the two-digit code system that it continues to use by introducing code combinations consisting of a letter and a number.
The list given here contains both current and no longer used IATA codes as well as two-letter-airline-designators of former IATA members. A company is indicated twice if it has used the same code under different names (such as Atlantic Coast Airlines and Independence Air). Numerous IATA codes are given to companies that are not airlines. These include, for example, providers of reservation systems, railway companies or long-distance bus companies.
The list currently contains (as of March 21, 2018, not counted precisely by scrolling screens) 1986 entries, exactly 960 of which are grayed out. The difference of 1026 concerns current codes. This means that 85.8% of the 1196 possible (26 letters + 10 numbers; 46 * 26 = 1196) combinations have been assigned. 170 codes are still available. Codes that consist of 2 numbers (100 pieces) are and have not (yet) been used.
Codes
| code | airline | country | comment | |
|---|---|---|---|---|
| 0B | Blue Air | Romania | ||
| 0D | Darwin Airline | Switzerland | new code: F7 | |
| 0Y | JetClub | Switzerland | Operation stopped in 2011 | |
| 0Y | Premium jet | Switzerland | ||
| 1A | Amadeus Global Travel Distribution | Spain | no airline, flight reservation system | |
| 1B | Abacus International | Singapore | ||
| 1C | Hewlett-Packard GmbH | Switzerland | ||
| 1D | Radixx Solutions International | United States | ||
| 1E | Travelsky Technology | China | ||
| 1F | INFINI Travel Information | Japan | ||
| 1G | Galileo International (Galileo Host) | United States | ||
| 1H | JSC Sirena Travel | Russia | ||
| 1I | Netjets | United States | ||
| 1I | German air rescue service | Germany | ||
| 1I | Novair | Sweden | new code: N9 | |
| 1I | Sky Trek International Airlines | United States | Operation stopped in 2000 | |
| 1I | Sierra Nevada Airlines | United States | ||
| 1y | Axess international | Japan | ||
| 1K | Sutra | United States | ||
| 1K | Southern Cross Distribution | Australia | ||
| 1L | OpenSkies | United Kingdom | new code: EC | |
| 1M | JSC Transport Automated Information Systems | Russia | ||
| 1N | Navitaire | United States | ||
| 1P | WorldSpan | United States | ||
| 1Q | InteliSys Aviation Systems | Canada | ||
| 1R | Hainan Phoenix Information Systems | China | ||
| 1S | Saber | United States | ||
| 1T | 1time | South Africa | Operation ceased in 2012 | |
| 1T | PT Aerosystems Indonesia | Indonesia | ||
| 1U | ITA software | United States | ||
| 1V | Galileo International (Apollo Host) | United States | ||
| 1Y | Electronic data systems | United States | ||
| 1Z | Saber Pacific | Australia | ||
| 2A | Deutsche Bahn | Germany | Railway company , see Rail & Fly | |
| 2 B | Aerocondor | Portugal | Operation stopped in 2009 | |
| 2C | SNCF | France | Railway company, Rail & Fly | |
| 2D | Dynamic Airways | United States | ||
| 2E | Smokey Bay Air | United States | ||
| 2F | Payam Air | Iran | ||
| 2G | Angara Airlines | Russia | ||
| 2H | Thalys | Belgium | Railway company, Rail & Fly | |
| 2I | Star Perú | Peru | ||
| 2Y | Air Burkina | Burkina Faso | ||
| 2K | AeroGal | Ecuador | renamed Avianca Ecuador | |
| 2K | Avianca Ecuador | Ecuador | ||
| 2L | Helvetic Airways | Switzerland | ||
| 2L | Transportes Aéreos Bolivianos | Bolivia | ||
| 2M | Moldavian Airlines | Republic of Moldova | Operation stopped in 2014 | |
| 2N | Nextjet | Sweden | ||
| 2P | Airphil Express | Philippines | renamed to Air Philippines | |
| 2P | Air Philippines | Philippines | in the PAL Express brand identity | |
| 2Q | Air cargo carriers | United States | ||
| 2R | Star Airlines | France | 2006 renamed XL Airways France , new code: SE | |
| 2S | Island Express | United States | ||
| 2T | Canada 3000 | Canada | Operation stopped in 2001 | |
| 2U | Atlasjet | Turkey | 2015 renamed to AtlasGlobal , new code: KK | |
| 2U | Sun d'Or International Airlines | Israel | ||
| 2V | Amtrak | United States | Railway company, Rail & Fly | |
| 2W | Welcome Air | Austria | Code no longer used | |
| 2Y | Helenair Caribbean | St. Lucia | Operation stopped in 2001 | |
| 2Y | My Indo Airlines | Indonesia | ||
| 2Z | Air Plus Comet | Spain | Operation stopped in 2009 | |
| 2Z | Chang An Airlines | China | new code: 9H | |
| 2Z | Passaredo Linhas Aéreas | Brazil | ||
| 3A | Alliance Airlines | United States | ||
| 3B | Central Connect Airlines | Czech Republic | Operation stopped in 2014 | |
| 3C | RegionsAir | United States | Operation ceased in 2007 | |
| 3D | Denim Air | Netherlands | Code no longer used | |
| 3D | Dokasch Air Cargo Equipment | Germany | ||
| 3E | Air Choice One | United States | ||
| 3F | Pacific Airways | United States | ||
| 3G | Atlant-Soyuz Airlines | Russia | 2010 renamed to Moscow Airlines | |
| 3G | Moscow Airlines | Russia | Operation stopped in 2011 | |
| 3G | Gading sari | Malaysia | ||
| 3H | Air Inuit | Canada | ||
| 3Y | Jubba Airways (Kenya) | Kenya | ||
| 3K | Jetstar Asia Airways | Singapore | ||
| 3K | Tatonduk Flying Service | United States | renamed to Everts Air | |
| 3L | Intersky | Austria | Operation ceased in 2015 | |
| 3M | Gulfstream International Airlines | United States | renamed to Silver Airways | |
| 3M | Silver Airways | United States | ||
| 3N | Air Urga | Ukraine | ||
| 3O | Air Arabia Maroc | Morocco | ||
| 3P | Tiara Air | Aruba | ||
| 3Q | China Yunnan Airlines | China | in China Eastern Airlines integrated | |
| 3R | Avior Regional | Venezuela | ||
| 3S | Aerologic | Germany | Joint venture between DHL and Lufthansa | |
| 3S | Air Antilles Express | Guadeloupe | ||
| 3T | Tarco Airlines | Sudan | ||
| 3T | Turan Air | Azerbaijan | Operation ceased in 2013 | |
| 3U | Sichuan Airlines | China | ||
| 3V | TNT Airways | Belgium | ||
| 3W | Malawian Airlines | Malawi | ||
| 3W | Wan Air | French Polynesia | ||
| 3X | Japan Air Commuter | Japan | new code: JC | |
| 3X | Premier Trans Aire | United States | ||
| 3Z | Everts Air | United States | new code: 5V | |
| 3Z | Necon Air | Nepal | Operation stopped in 2006 | |
| 3Z | Travel Service Polska | Poland | ||
| 4A | Air Go Airlines | Greece | Operation stopped in 2011 | |
| 4A | Air Kiribati | Kiribati | ||
| 4B | Boutique Air | United States | ||
| 4B | Perimeter Aviation | Canada | new code: YP | |
| 4C | AIRES | Colombia | renamed to LAN Colombia | |
| 4C | LAN Colombia | Colombia | ||
| 4D | Air Sinai | Egypt | ||
| 4E | Stabo Air | Zambia | ||
| 4E | Tanana Air Service | United States | ||
| 4G | Advance Leasing Company | United States | Code no longer used | |
| 4G | Gazpromavia | Russia | ||
| 4G | Shenzhen Airlines | China | new code: ZH | |
| 4H | Fly Linhas Aéreas | Brazil | Operation ceased in 2003 | |
| 4H | United Airways | Bangladesh | ||
| 4I | İzmir Airlines | Turkey | ||
| 4Y | Flydamas Airlines | Syria | ||
| 4K | Know Borek Air | Canada | ||
| 4L | Air Astana | Kazakhstan | new code: KC | |
| 4L | Deltacraft | Finland | Operation stopped in 2004 | |
| 4M | LAN Argentina | Argentina | ||
| 4N | Air North | Canada | ||
| 4O | Interjet | Mexico | ||
| 4P | Air Polonia | Poland | Operation stopped in 2004 | |
| 4P | Business Aviation | Democratic Republic of Congo | Operation ceased in 2007 | |
| 4P | Travel Air | Papua New Guinea | ||
| 4P | Viking Airlines | Sweden | Operation stopped in 2011 | |
| 4Q | Air Italy Polska | Poland | 2011 renamed Air Poland | |
| 4Q | Air Poland | Poland | Operation ceased in 2012 | |
| 4Q | Safi Airways | Afghanistan | ||
| 4R | Orient Eagle Airways | Kazakhstan | Operation stopped in 2002 | |
| 4R | Royal Flight Airlines | Russia | new code: RL | |
| 4S | Solar cargo | Venezuela | ||
| 4U | Germanwings | Germany | Operation continued by Eurowings | |
| 4U | Tavaj Linhas Aereas | Brazil | ||
| 4V | Birdy Airlines | Belgium | In 2004 merged with SN Brussels Airlines | |
| 4V | Voyageur Airways | Canada | Code no longer used | |
| 4W | Allied Air | Nigeria | ||
| 4W | Warbelow's Air Ventures | United States | ||
| 4Y | Airbus Transport International | France | ||
| 4Y | Yute Air Alaska | United States | ||
| 4Z | South African Airlink | South Africa | ||
| 5A | Alpine Aviation | United States | ||
| 5B | Bassaka Air | Cambodia | ||
| 5B | Trans International Express | United States | Code no longer used | |
| 5C | Air Tahoma | United States | Operation stopped in 2009 | |
| 5C | CAL Cargo Airlines | Israel | ||
| 5D | Aerolitoral | Mexico | ||
| 5D | DutchBird | Netherlands | Operation closed in 2004 | |
| 5E | Base Airlines | Netherlands | Closing of operations in 2001 | |
| 5E | East Coast Flight Services | United States | ||
| 5F | Arctic Circle Air Service | United States | Code has not been used since 2011 | |
| 5G | Skyservice Airlines | Canada | Operation stopped in 2010 | |
| 5H | Fly540 | Kenya | ||
| 5Y | Cebu Pacific | Philippines | ||
| 5K | Hi Fly | Portugal | ||
| 5K | Odessa Airlines | Ukraine | Operation stopped in 2006 | |
| 5L | Aerosur | Bolivia | Operation ceased in 2012 | |
| 5L | Fly Salone | United Kingdom | Operation stopped in 2016 | |
| 5 M | Montserrat Airways | Montserrat | ||
| 5 M | Sibaviatrans | Russia | Operation stopped in 2008 | |
| 5N | Nordavia | Russia | Renamed Smartavia in 2019 | |
| 5N | SmartAvia | Russia | ||
| 5O | Europe Airpost | France | ||
| 5P | Pena Transportes Aéreos | Brazil | Operation ceased in 2005 | |
| 5P | Skyeurope Hungary | Hungary | Operation stopped in 2009 | |
| 5Q | BQB Líneas Aéreas | Uruguay | Operation ceased in 2015 | |
| 5Q | Euroceltic Airways | United Kingdom | Operation ceased in 2003 | |
| 5R | IRS Aero | Russia | Operation stopped in 2002 | |
| 5R | Carthage Airlines | Tunisia | Operation stopped in 2011 | |
| 5R | RUTACA Airlines | Venezuela | ||
| 5S | L'Aéropostale | France | Operation stopped in 2001 | |
| 5S | Servicios Aéreos Profesionales | Dominican Republic | ||
| 5T | Canadian North | Canada | ||
| 5T | Transwede Airways | Sweden | Operation stopped in 2010 | |
| 5U | Transportes Aéreos Guatemaltecos | Guatemala | ||
| 5V | Everts Air | United States | ||
| 5V | Lviv Airlines | Ukraine | Operation stopped in 2009 | |
| 5W | Astraeus Airlines | United Kingdom | Operation stopped in 2011 | |
| 5W | WESTbahn Management | Austria | Railway company | |
| 5X | UPS Airlines | United States | ||
| 5Y | Atlas Air | United States | ||
| 5Y | Isles of Scilly Skybus | United Kingdom | Code is no longer used | |
| 5Z | Airfreight Express | United Kingdom | Operation stopped in 2002 | |
| 5Z | CemAir | South Africa | ||
| 6A | Armenia Airways | Armenia | planned start of operation did not take place | |
| 6A | Aviacsa | Mexico | Operation stopped in 2009 | |
| 6B | Blue Scandinavia | Sweden | 1998 renamed Britannia Airways, AB | |
| 6B | Britannia Airways AB | Sweden | 2005 renamed to Thomsonfly AB | |
| 6B | Thomsonfly AB | Sweden | 2006 renamed TUIfly Nordic | |
| 6B | TUIfly Nordic | Sweden | ||
| 6C | Cape Smythe Air Service | United States | ||
| 6D | Pelita Air Service | Indonesia | Code no longer used | |
| 6E | IndiGo Airlines | India | ||
| 6F | Primera Air Nordic | Latvia | ||
| 6G | Go2Sky | Slovakia | ||
| 6G | Sun Air Express | United States | ||
| 6H | Israir | Israel | ||
| 6I | Air Alsie | Denmark | ||
| 6Y | Jubba Airways (Somalia) | Kenya | Code is no longer used | |
| 6Y | Solaseed Air | Japan | ||
| 6K | Asian spirit | Philippines | 2008 renamed Zest Airlines, later AirAsia Zest | |
| 6K | Inter Airlines | Turkey | Operation stopped in 2008 | |
| 6K | Songbird Airways | United States | ||
| 6L | Aklak Air | Canada | ||
| 6M | South Asia Airlines | Bangladesh | Code is no longer used | |
| 6M | Zacarías Moreno (Frigocontainer) | Spain | no airline | |
| 6N | Aerosucre | Colombia | Code is no longer used | |
| 6N | Nordic Airways | Sweden | Operation stopped in 2009 | |
| 6N | Niger Airlines | Niger | ||
| 6N | Rossair Europe | Netherlands | Operation stopped in 2004 | |
| 6Q | Cham Wings Airlines | Syria | ||
| 6Q | Slovak Airlines | Slovakia | Operation ceased in 2007 | |
| 6S | Sahara Airlines | Algeria | Operation ceased in 2003 | |
| 6T | Air Mandalay | Myanmar | ||
| 6U | Air Ukraine | Ukraine | Operation stopped in 2004 | |
| 6U | Unique Air | United States | ||
| 6U | Air Cargo Germany | Germany | Operation ceased in 2013 | |
| 6V | Air Vegas | United States | Operation stopped in 2004 | |
| 6V | Grupo Avanza | Spain | no airline, long-distance bus transport | |
| 6W | Saravia / Saratov Airlines | Russia | ||
| 6Y | SmartLynx Airlines | Latvia | ||
| 6Z | Euro-Asia Air | Kazakhstan | ||
| 6Z | Ukrainian Cargo Airways | Ukraine | Operation stopped in 2009 | |
| 7A | Alaska Coastal Airlines | United States | absorbed into Alaska Airlines | |
| 7B | Fly blue crane | South Africa | ||
| 7C | Coyne Airways | United Kingdom | Code no longer used | |
| 7C | Jeju Air | South Korea | ||
| 7D | Donbassaero | Ukraine | Operation ceased in 2013 | |
| 7C | MGC Aviation | Lesotho | ||
| 7E | Sylt Air GmbH | Germany | ||
| 7F | First Air | Canada | ||
| 7G | MK Airlines | United Kingdom | Operation stopped in 2010 | |
| 7G | StarFlyer | Japan | ||
| 7H | Corvus Airlines | United States | ||
| 7H | Era Alaska | United States | In 2014 the company was renamed Corvus Airlines | |
| 7H | Era Aviation | United States | 2010 renamed Era Alaska | |
| 7Y | Skagway Air Service | United States | Operation ceased in 2007 | |
| 7Y | Tajikistan Airlines | Tajikistan | ||
| 7Y | CSafe Global | United States | no airline | |
| 7K | Kolavia | Russia | Operation ceased in 2015 | |
| 7L | Aerocaribbean | Cuba | 2015 merged with Cubana | |
| 7L | Silk Way West Airlines | Azerbaijan | ||
| 7M | MAYair | Mexico | ||
| 7M | Mistral Air | Italy | new code: M4 | |
| 7N | Inland Aviation Services | United States | Code is no longer used | |
| 7N | PAWA Dominicana | Dominican Republic | ||
| 7P | Air Panama | Panama | ||
| 7P | APA International Air | Dominican Republic | Operation stopped in 2001 | |
| 7Q | Elite Airways | United States | ||
| 7Q | Sundance Air Venezuela | Venezuela | Code is no longer used | |
| 7R | RusLine | Russia | ||
| 7S | Arctic Transportation Services | United States | ||
| 7T | Air-Glaciers | Switzerland | Code is no longer used | |
| 7T | Aero Express del Ecuador | Ecuador | in the external appearance of DHL Ecuador | |
| 7U | Aviaenergo | Russia | Operation stopped in 2011 | |
| 7U | Commercial Aviation Services | United States | ||
| 7V | Austin Express | United States | Operation stopped in 2000 | |
| 7V | Federal Air | South Africa | ||
| 7W | Wind Rose Aviation | Ukraine | ||
| 7Y | Man Yadanarpon Airlines | Myanmar | ||
| 7Y | Med Airways | Lebanon | Code is no longer used | |
| 7Y | Mid Airlines | Sudan | Code is no longer used | |
| 7Z | Ameristar Air Cargo | United States | ||
| 7Z | Laker Airways | Bahamas | Operation ceased in 2005 | |
| 8A | Arctic Air | Norway | Operation ceased in 2003 | |
| 8A | Atlas Blue | Morocco | Operation stopped in 2010 | |
| 8A | Panama Airways | Panama | ||
| 8B | Business Air | Thailand | 2015 renamed Intira Airlines ; Operation stopped in 2017 | |
| 8B | TransNusa Air Services | Indonesia | ||
| 8C | Air Transport International | United States | ||
| 8C | Cotai water jet | China | no airline, water taxi | |
| 8C | East Star Airlines | China | Operation stopped in 2009 | |
| 8C | Shan Xi Airlines | China | Merged into Hainan Airlines in 2009 | |
| 8D | Expo Aviation | Sri Lanka | renamed to FitsAir | |
| 8D | FitsAir | Sri Lanka | ||
| 8D | Interavia Airlines | Russia | Operation stopped in 2008 | |
| 8D | Servant Air | United States | Code is no longer used | |
| 8E | Bering Air | United States | ||
| 8E | Easy Fly Express | Bangladesh | ||
| 8F | Cardig Air | Indonesia | ||
| 8F | STP Airways | Sao Tome and Principe | ||
| 8G | Angel Airlines | Thailand | Operation ceased in 2003 | |
| 8G | Gulf & Caribbean Cargo | United States | Code is no longer used | |
| 8G | Mid Africa Aviation | Gambia | ||
| 8H | BH Air | Bulgaria | ||
| 8H | Equaflight service | Republic of the Congo | new code: E7 | |
| 8I | InselAir Aruba | Aruba | ||
| 8I | myair | Italy | Operation stopped in 2004 | |
| 8Y | EcoJet | Bolivia | ||
| 8Y | Jet4you | Morocco | Operation ceased in 2012 | |
| 8Y | Kominteravia | Russia | Code is no longer used | |
| 8K | K-Mile Air | Thailand | ||
| 8L | Cargo Plus Aviation | United Arab Emirates | Operation stopped in 2008 | |
| 8L | Lucky Air | China | ||
| 8L | Newair | Denmark | Operation ceased in 2003 | |
| 8M | Maxair | Sweden | Operation ceased in 2005 | |
| 8M | Myanmar Airways International | Myanmar | ||
| 8N | Aerodynamics | United States | ||
| 8N | Nordkalottflyg | Sweden | 2006 renamed Barents AirLink | |
| 8N | Regional Air Services | Tanzania | ||
| 8O | West Coast Air | Canada | Code is no longer used | |
| 8P | Pacific Coastal Airlines | Canada | ||
| 8P | Payam Aviation Services | Iran | Code is no longer used | |
| 8Q | Baker Aviation | United States | Code is no longer used | |
| 8Q | Onur Air | Turkey | ||
| 8R | Sol Líneas Aéreas | Argentina | Operation ceased in 2015 | |
| 8S | Scorpio Aviation | Egypt | Operation stopped in 2002 | |
| 8S | Shun Tak-China Travel Ship | China | no airline, water taxi | |
| 8T | Air Tindi | Canada | ||
| 8U | Afriqiyah Airways | Libya | ||
| 8U | Simon Air | Liberia | Operation stopped in 2006 | |
| 8V | Astral Aviation | Kenya | ||
| 8V | Wright Air Service | United States | Code is no longer used | |
| 8W | BAX Global | United States | Code is no longer used | |
| 8Y | Air Burundi | Burundi | Operation ceased in 2013 | |
| 8Y | Astro Air International | Philippines | ||
| 9A | Eaglexpress Air Charter | Malaysia | ||
| 9B | AccesRail | Canada | Train ticket provider for travel in Europe | |
| 9C | Gill Airways | United Kingdom | Operation stopped in 2001 | |
| 9C | Spring Airlines | China | ||
| 9C | Samair | Slovakia | Operation stopped in 2014 | |
| 9D | Perm Airlines | Russia | Operation stopped in 2009 | |
| 9E | Endeavor Air | United States | ||
| 9F | Eurostar International | United Kingdom | Railway company | |
| 9G | 9G Rail | United Kingdom | Railway company | |
| 9G | Galaxy Airways | Greece | Operation stopped in 2001 | |
| 9H | Chang An Airlines | China | ||
| 9H | Medavia | Malta | Code no longer used | |
| 9H | Ecoair International | Algeria | Operation stopped in 2002 | |
| 9H | MDLR Airlines | India | Operation stopped in 2009 | |
| 9I | Alliance Air | India | ||
| 9Y | Dana Airlines | Nigeria | ||
| 9Y | Pacific Island Aviation | United States | Operation ceased in 2005 | |
| 9K | Cape Air | United States | ||
| 9M | Central Mountain Air | Canada | ||
| 9N | Trans States Airlines | United States | new code: AX; Operation ceased in 2020 | |
| 9N | Tropic Air | Belize | ||
| 9O | The Cargo Flights | Thailand | ||
| 9P | Air Arabia Jordan | Jordanian | ||
| 9P | Pelangi Airways | Malaysia | Operation stopped in 2001 | |
| 9Q | Caicos Express Airways | Bahamas | ||
| 9Q | PB Air | Thailand | Operation stopped in 2009 | |
| 9R | Phuket Airlines | Thailand | Operation ceased in 2013 | |
| 9R | SATENA | Colombia | ||
| 9S | Southern Air | United States | ||
| 9T | MyCargo Airlines | Turkey | ||
| 9T | Transwest Air | Canada | Code is no longer used | |
| 9U | Air Moldova | Republic of Moldova | ||
| 9V | Avior Airlines | Venezuela | ||
| 9V | Vipair Airlines | Kazakhstan | Operation stopped in 2000 | |
| 9W | Jet Airways | India | ||
| 9X | Southern Airways Express | United States | ||
| A2 | Astra Airlines | Greece | ||
| A2 | Cielos del Perú | Peru | Operation ceased in 2012 | |
| A3 | Aegean Airlines | Greece | ||
| A4 | Aerocon | Bolivia | ||
| A4 | Southern Winds | Argentina | Operation ceased in 2005 | |
| A5 | Airline | France | Operation ceased in 2013 | |
| A5 | Air France HOP | France | Code is no longer used | |
| A5 | Tikal jets | Guatemala | Operation stopped in 2006 | |
| A6 | Air Alps | Austria | Operation stopped in 2014 | |
| A7 | Air Plus Comet | Spain | Operation stopped in 2009 | |
| A7 | Air Niamey | Niger | ||
| A8 | Aerolíneas Paraguayas | Paraguay | Operation stopped in 2002 | |
| A8 | Ameriflight | United States | ||
| A8 | Benin Golf Air | Benin | Operation ceased in 2012 | |
| A9 | Georgian Airways | Georgia | ||
| AA | American Airlines | United States | ||
| FROM | air Berlin | Germany | Operation stopped in 2017 | |
| AC | Air Canada | Canada | ||
| AD | Air Paradise | Indonesia | Operation ceased in 2005 | |
| AD | Avialeasing Aviation | Uzbekistan | new code: V2 | |
| AD | Azul | Brazil | ||
| AE | Air Ceylon | Sri Lanka | Operation closed in 1978 | |
| AE | Air Europe | United Kingdom | Operation ceased in 1991 | |
| AE | Iceland Express | Iceland | Operation ceased in 2012 | |
| AE | Mandarin Airlines | Taiwan | ||
| AF | Air France | France | ||
| AG | Air contractors | Ireland | In 2015 renamed ASL Airlines Ireland | |
| AG | Air Ghana | Ghana | ||
| AG | Aruba Airlines | Aruba | ||
| AH | Air Algérie | Algeria | ||
| AI | Air India | India | ||
| AJ | Air Belgium (1979) | Belgium | Operation stopped in 2000 | |
| AJ | Air Jordan | Jordan | Operation ceased in 1961 | |
| AJ | Aztec Airways | United States | ||
| AK | Air Asia | Malaysia | ||
| AK | Airways International Cymru | United Kingdom | Operation ceased in 1988 | |
| AL | Air Leisure | Egypt | ||
| AL | Allegheny Airlines | United States | renamed to USAir | |
| AL | Skyway Airlines | United States | Operation stopped in 2008 | |
| AL | Trans Avia Export | Belarus | Code is no longer used | |
| AT THE | Aeroméxico | Mexico | ||
| AO | Aviaco | Spain | 1999 integrated into Iberia | |
| AO | AviaNova | Russia | Operation stopped in 2011 | |
| AO | Australian Airlines | Australia | Operation stopped in 2006 | |
| AP | Air One | Italy | Operation stopped in 2014 | |
| AP | Alba Star | Spain | ||
| AQ | 9 Air | China | ||
| AQ | Aloha Airlines | United States | Operation stopped in 2008 | |
| AQ | Aquila Airways | United Kingdom | Operation ceased in 1958 | |
| AR | Aerolíneas Argentinas | Argentina | ||
| AS | Alaska Airlines | United States | ||
| AT | Royal Air Maroc | Morocco | ||
| AU | Austral | Argentina | ||
| AV | Avianca | Colombia | ||
| AW | Dirgantara Air Services | Indonesia | Operation stopped in 2009 | |
| AW | Schreiner Airways | Netherlands | Operation ceased in 2005 | |
| AW | Venezolana | Venezuela | ||
| AX | Trans States Airlines | United States | ||
| AY | Finnair | Finland | ||
| AZ | Alitalia | Italy | ||
| B0 | La Compagnie | France | ||
| B1 | Bravo Passenger Solutions | Singapore | no airline, flight reservation system | |
| B2 | Belavia | Belarus | ||
| B3 | Bellview Airlines | Nigeria | Operation stopped in 2009 | |
| B4 | ZanAir | Tanzania | ||
| B4 | BACH flight operations | Austria | Code is no longer used | |
| B4 | Bankair | United States | Code is no longer used | |
| B5 | Amadeus Air Service | Germany | Operation stopped in 2004 | |
| B5 | Flightline | United Kingdom | Operation stopped in 2008 | |
| B6 | JetBlue Airways | United States | ||
| B7 | Uni Air | Republic of China (Taiwan) | ||
| B8 | Eritrean Airlines | Eritrea | ||
| B9 | Air Bangladesh | Bangladesh | Operation ceased in 2005 | |
| B9 | Iran airtour | Iran | Code is no longer used | |
| BA | British Airways | United Kingdom | also British Airways / Comair (South Africa) | |
| BA | British Overseas Airways Corporation | United Kingdom | 1974 BEA to British Airways merged | |
| BB | Seaborne Airlines | Puerto Rico | ||
| BC | Skymark Airlines | Japan | ||
| BD | British Midland Airways / bmi | United Kingdom | Operation ceased in 2012 | |
| BD | Cambodia Bayon Airlines | Cambodia | ||
| BE | British European Airways | United Kingdom | 1974 BOAC to British Airways merged | |
| BE | Flybe | United Kingdom | Operation ceased in 2020 | |
| BE | Jersey European Airways | United Kingdom | renamed Flybe | |
| BF | Bluebird Cargo | Iceland | Code is no longer used | |
| BF | Aéro service | Republic of the Congo | Code is no longer used | |
| BG | Biman Bangladesh Airlines | Bangladesh | ||
| bra | Hawkair | Canada | Code is no longer used | |
| BI | Royal Brunei Airlines | Brunei | ||
| BJ | Bakhtar Afghan Airlines | Afghanistan | 1988 merged with Ariana Afghan Airlines | |
| BJ | Nouvelair | Tunisia | ||
| BK | BKS Air Transport | United Kingdom | 1970 renamed Northeast Airlines | |
| BK | MidAtlantic Airways | United States | Operation stopped in 2006 | |
| BK | Okay Airways | China | ||
| BK | Potomac Air | United States | Operation stopped in 2000 | |
| BL | Jetstar Pacific | Vietnam | ||
| BM | Aero Trasporti Italiani (ATI) | Italy | Merged into Alitalia in 1994 | |
| BM | Air Sicilia | Italy | Operation ceased in 2003 | |
| BM | Bayu Indonesia Air | Indonesia | Operation stopped in 2004 | |
| BM | bmi regional | United Kingdom | Operation discontinued in 2019 | |
| BN | Braniff International Airways | United States | Operation ceased in 1982 | |
| BN | Braniff | United States | Operation ceased in 1990 | |
| BO | Air Columbus | Portugal | Operation closed in 1994 | |
| BO | Bouraq Indonesia Airlines | Indonesia | Operation ceased in 2005 | |
| BP | Air Botswana | Botswana | ||
| BQ | Aeromar Líneas Aéreas Dominicanas | Dominican Republic | Operation ceased in 2003 | |
| BR | British Caledonian Airways | United Kingdom | Acquired by British Airways in 1988 | |
| BR | British United Airways | United Kingdom | In 1970 the company was renamed British Caledonian Airways | |
| BR | EVA Air | Taiwan | ||
| BS | British International Helicopters | United Kingdom | Code is no longer used | |
| BS | Busy Bee of Norway | Norway | Operation ceased in 1992 | |
| BS | CHC Scotia | United Kingdom | Code is no longer used | |
| BS | US Bangla Airlines | Bangladesh | ||
| BT | AirBaltic | Latvia | ||
| BU | Braathens | Norway | renamed to SAS Norge | |
| BU | Compagnie Africaine d'Aviation | Democratic Republic of Congo | ||
| BU | SAS Norge | Norway | 2009 merged with SAS | |
| BV | Blue Panorama Airlines | Italy | ||
| BW | BWIA West Indies Airways | Trinidad and Tobago | Operation stopped in 2006 | |
| BW | Caribbean Airlines | Trinidad and Tobago | ||
| BY | Britannia Airways | United Kingdom | 2005 renamed to Thomsonfly | |
| BY | Thomsonfly | United Kingdom | Merged with Thomson Airways in 2009 | |
| BY | Thomson Airways | United Kingdom | ||
| BZ | Blue Bird Airways | Greece | ||
| BZ | Blue Dart Aviation | India | ||
| BZ | Keystone Air Services | Canada | Code is no longer used | |
| C0 | Centralwings | Poland | Operation stopped in 2009 | |
| C1 | Tectimes Sudamericana | Argentina | no airline | |
| C1 | CEIBA Intercontinental | Equatorial Guinea | ||
| C3 | Contact Air | Germany | Operation ceased in 2012 | |
| C3 | Trade Air | Croatia | ||
| C4 | Alma de Mexico | Mexico | Operation stopped in 2008 | |
| C4 | Conquest Air Cargo | United States | ||
| C4 | Zimex Aviation | Switzerland | Code is no longer used | |
| C5 | Commutair | United States | ||
| C6 | CanJet Airlines | Canada | ||
| C6 | CHEP Aerospace Solutions | Switzerland | no airline | |
| C7 | Aero Continente Chile | Chile | Operation stopped in 2002 | |
| C7 | Cinnamon Air | Sri Lanka | ||
| C7 | Rico Linhas Aereas | Brazil | Operation stopped in 2010 | |
| C8 | Cargolux Italia | Italy | ||
| C8 | Chicago Express Airlines | United States | Operation ceased in 2005 | |
| CA | Air China | China | ||
| CA | CAAC | China | 1987 renamed Air China | |
| CA | Capital Airlines | United States | 1961 merged with United Air Lines | |
| CB | Air 1 | United States | Operation ceased in 1985 | |
| CB | Scot Airways | United Kingdom | renamed to Suckling Airways | |
| CB | Suckling Airways | United Kingdom | Operation ceased in 2013 | |
| CB | Trans Caribbean Air | United States | ||
| CC | Air Atlanta Icelandic | Iceland | ||
| CC | CM Airlines | Honduras | ||
| CC | MacAir Airlines | Australia | Operation stopped in 2009 | |
| CD | Corendon Dutch Airlines | Netherlands | ||
| CE | Central African Airways | Southern Rhodesia | Operation ceased in 1967 | |
| CE | Chalair Aviation | France | ||
| CE | Nationwide Airlines | South Africa | Operation stopped in 2008 | |
| CF | China Postal Airlines | China | ||
| CF | City Airline | Sweden | Operation stopped in 2011 | |
| CF | Faucett Perú | Peru | Operation ceased in 1999 | |
| CG | Airlines PNG | Papua New Guinea | ||
| CH | Bemidji Airlines | United States | ||
| CI | China Airlines | Taiwan | ||
| CJ | BA CityFlyer | Great Britain | ||
| CJ | China Northern Airlines | China | merged with China Southern Airlines | |
| CK | China Cargo Airlines | China | ||
| CL | Capitol Air | United States | Operation ceased in 1984 | |
| CL | Lufthansa CityLine | Germany | ||
| CL | Tempelhof Airways | United States | Operation ceased in 1991 | |
| CM | Copa Airlines | Panama | ||
| CN | Grand China Air | China | ||
| CN | Islands Nationair | Papua New Guinea | Code is no longer used | |
| CN | Westward Airways | United States | Operation ceased in 2005 | |
| CN | Torosair | Turkey | Operation ceased in 1989 | |
| CO | Continental Airlines | United States | 2011 merged with United Airlines | |
| CP | Canadian Airlines International | Canada | Integrated into Air Canada in 2001 | |
| CP | Canadian Pacific Air Lines | Canada | 1968 renamed to CP Air | |
| CP | Compass Airlines | United States | Operation ceased in 2020 | |
| CP | CP Air | Canada | 1987 absorbed into Canadian Airlines | |
| CQ | Charter lines | Tanzania | ||
| CQ | Coastal Aviation | Tanzania | ||
| CQ | Sunshine Express Airlines | Australia | Code is no longer used | |
| CR | OAG Worldwide Limited | United Kingdom | no airline | |
| CS | Air One CityLiner | Italy | 2011 renamed Alitalia CityLiner | |
| CS | Air Sofia | Bulgaria | Operation ceased in 2007 | |
| CS | Cambrian Airways | United Kingdom | In 1976 British Airways merged | |
| CS | Continental Micronesia | United States | Operation stopped in 2010 | |
| CT | Alitalia CityLiner | Italy | ||
| CU | Cubana | Cuba | ||
| CV | Air Chathams | New Zealand | Code is no longer used | |
| CV | Cargolux | Luxembourg | ||
| CW | Air Cargo Global | Slovakia | ||
| CW | Air Marshall Islands | Marshall Islands | Code is no longer used | |
| CX | Cathay Pacific | Hong Kong | ||
| CY | Cyprus Airways | Cyprus | Operation ceased in 2015 | |
| CZ | Cascade Airways | United States | Operation ceased in 1986 | |
| CZ | China Southern Airlines | China | ||
| D0 | DHL Air UK | United Kingdom | ||
| D2 | Damania Airways | India | Operation ceased in 1997 | |
| D2 | Severstal Aircompany | Russia | ||
| D3 | Daallo Airlines | Djibouti | ||
| D4 | Alidaunia | Italy | Code is no longer used | |
| D4 | Dart Airlines | Ukraine | ||
| D5 | DHL Aero Expreso | Panama | ||
| D5 | NEPC Airlines | India | Operation ceased in 1997 | |
| D6 | Inter Air | South Africa | ||
| D7 | AirAsia X | Malaysia | ||
| D7 | Dinar Líneas Aéreas | Argentina | Operation stopped in 2002 | |
| D8 | Diamond Sakha Airlines | Russia | Code is no longer used | |
| D8 | Djibouti Airlines | Djibouti | Operation stopped in 2009 | |
| D8 | Norwegian Air International | Ireland | ||
| D9 | Aeroflot Don | Russia | 2009 renamed to Donavia | |
| D9 | Donavia | Russia | ||
| THERE | Daily Air | Taiwan | Code is no longer used | |
| THERE | Dan-Air | United Kingdom | 1992 merged with British Airways | |
| THERE | Air Georgia | Georgia | Merged with Georgian Airways in 1999 | |
| DB | Brit Air | France | 2013 absorbed in Hop! | |
| DC | BRA | Sweden | ||
| DC | Sverigeflyg | Sweden | Code is no longer used | |
| DD | Amber Airways | United Kingdom | Operation ceased in 1988 | |
| DD | Atlantic Coast Jet | United States | Reintegrated into Atlantic Coast Airlines | |
| DD | Conti flight | Germany | Operation closed in 1994 | |
| DD | Nok Air | Thailand | ||
| DE | Condor flight service | Germany | ||
| DF | AeBal | Spain | 2008 renamed to Quantum Air | |
| DF | Condor Berlin | Germany | Integrated into Condor Flugdienst in 2013 | |
| DF | Quantum Air | Spain | Operation stopped in 2010 | |
| DG | Custom Air Transport | United States | Code is no longer used | |
| DH | Atlantic Coast Airlines | United States | 2004 renamed to Independence Air | |
| DH | DHL Aviation | Belgium | Code is no longer used | |
| DH | Independence Air | United States | Operation stopped in 2006 | |
| DH | Norwegian Air Norway | Norway | ||
| DI | Air Djibouti | Djibouti | Operation ceased in 1991 | |
| DI | dba | Germany | Operation stopped in 2008 | |
| DI | German BA | Germany | 2006 renamed to dba | |
| DI | Norwegian Air UK | United Kingdom | ||
| DJ | AirAsia Japan | Japan | ||
| DJ | Nordic European Airlines | Sweden | Operation ceased in 1998 | |
| DJ | Virgin Australia | Australia | new code: VA | |
| DK | Scanair | Sweden | Operation ceased in 1993 | |
| DK | Premiair | Denmark | 2002 renamed to MyTravel Airways A / S | |
| DK | MyTravel Airways | Denmark | 2008 renamed to Thomas Cook Airlines Scandinavia | |
| DK | Sunclass Airlines | Denmark | ||
| DK | Thomas Cook Airlines Scandinavia | Denmark | Renamed to Sunclass Airlines in 2019 | |
| DL | Delta Air Lines | United States | ||
| DM | Asian Air | Thailand | ||
| DM | Maersk Air | Denmark | Integrated into Sterling Airlines in 2005 | |
| DN | Air Exel Belgique | Belgium | Operation ceased in 1991 | |
| DN | Sénégal Airlines | Senegal | ||
| DO | Air Vallée | Italy | new code: VK | |
| DO | Dominicana de Aviación | Dominican Republic | Operation ceased in 1999 | |
| DP | First Choice Airways | United Kingdom | Operation stopped in 2008 | |
| DQ | Air Direct Connect | Kenya | ||
| DQ | Coastal Air Transport | American Virgin Islands | Code is no longer used | |
| DR | Air Link | Australia | new code: ZL | |
| DR | Hyeres Aero Service | France | Code is no longer used | |
| DR | Mediterranean Air Service | Tunisia | Operation ceased in 2003 | |
| DR | Ruili Airlines | China | ||
| DS | The Nordisk | Hong Kong | no airline | |
| DS | EasyJet Switzerland | Switzerland | ||
| DT | TAAG Angola Airways | Angola | ||
| YOU | Hemus Air | Bulgaria | merges with Bulgaria Air | |
| DV | Aircompany SCAT | Kazakhstan | ||
| DV | Air taxi flight | Germany | Code is no longer used | |
| DV | Nantucket Airlines | United States | Code is no longer used | |
| DW | Aero Charter Ukraine | Ukraine | Code is no longer used | |
| DW | German Air Transport Company (DLT) | Germany | 1991 integrated into Lufthansa CityLine | |
| DW | Dominican wings | Dominican Republic | ||
| DX | Danish Air Transport | Denmark | ||
| DY | Air Djibouti | Djibouti | Operation stopped in 2001 | |
| DY | Norwegian Air Shuttle | Norway | ||
| Double room | Air Metro North | United States | Code is no longer used | |
| Double room | Air Tropical | France | Code is no longer used | |
| Double room | Donghai Airlines | China | ||
| Double room | Air Tropical | France | Code is no longer used | |
| E0 | Eos Airlines | United States | Operation stopped in 2008 | |
| E2 | Rio Grande Air | United States | Operation stopped in 2004 | |
| E2 | Eurowings Europe | Austria | Established in 2015 | |
| E3 | Domodedovo Airlines | Russia | Operation ceased in 2008 | |
| E3 | New Gen Airways | Thailand | Operation discontinued in 2019 | |
| E4 | Aero Asia | Pakistan | Closing of operations in 2007 | |
| E4 | Enter Air | Poland | ||
| E4 | Estelar Latinoamerica | Venezuela | ||
| E5 | Air Arabia Egypt | Egypt | ||
| E6 | Avia Express Kruiz | Russia | Operation stopped in 2002 | |
| E6 | Bringer Air Cargo Taxi Aereo | Brazil | ||
| E7 | Equaflight service | Congo | ||
| E7 | Estafeta Carga Aerea | Mexico | ||
| E7 | European Aviation Air Charter | United Kingdom | Operation stopped in 2008 | |
| E8 | Alpi Eagles | Italy | Operation ceased in 2008 | |
| E9 | AJT Air International | Russia | Operation ceased in 2003 | |
| E9 | Boston-Maine Airways (1999) | United States | Operation stopped in 2008 | |
| E9 | Evelop Airlines | Spain | ||
| EA | Ándalus Lineas Aéreas | Spain | Operation stopped in 2010 | |
| EA | Eastern Air Lines | United States | Operation ceased in 1991 | |
| EA | Eastern Air Lines (2011) | United States | Operation stopped in 2017 | |
| EB | Emery Worldwide Airlines | United States | Operation stopped in 2001 | |
| EB | Wamos Air | Spain | ||
| EC | Avialeasing Aviation | Uzbekistan | Code is no longer used | |
| EC | East African Airways | Kenya, Tanzania, Uganda | Operation ceased in 1977 | |
| EC | Heli-Inter | France | Code is no longer used | |
| EC | OpenSkies | United Kingdom | ||
| ED | Airblue | Pakistan | new code: PA | |
| ED | AirExplore | Slovakia | ||
| ED | CCAir | United States | Operation stopped in 2002 | |
| EE | Aero Airlines | Estonia | Operation stopped in 2008 | |
| EE | Regional jet | Estonia | ||
| EF | Fly Caminter | Cameroon | ||
| EG | British Eagle International Airlines | United Kingdom | Operation ceased in 1968 | |
| EG | East Air | Tajikistan | ||
| EG | Enerjet | Canada | ||
| EG | Japan Asia Airways | Japan | Merged with Japan Airlines in 2008 | |
| EH | Air Nippon Network | Japan | 2010 merged into ANA Wings | |
| EH | ANA Wings | Japan | ||
| EH | SAETA | Ecuador | Operation stopped in 2000 | |
| EGG | Aer Lingus | Ireland | ||
| EJ | Air Atlantis | Portugal | 1993 integrated into TAP Air Portugal | |
| EJ | European Cargo Services | Netherlands | no airline, logistics company | |
| EJ | New England Airlines | United States | Code is no longer used | |
| EK | Emirates | United Arab Emirates | ||
| Tbsp | Air Nippon | Japan | Merged into All Nippon Airways in 2012 | |
| Tbsp | Ellinair | Greece | ||
| Tbsp | Export air cargo | Peru | 1997 renamed to Cielos del Perú | |
| EM | Aero Benin | Benin | Code is no longer used | |
| EM | Empire Airlines | United States | ||
| EM | Western Airlines | Australia | Operation stopped in 2002 | |
| EN | Air Dolomiti | Italy | ||
| EN | Cal Air International | United Kingdom | 1988 renamed Novair International Airways | |
| EN | Novair International Airways | United Kingdom | Operation ceased in 1990 | |
| EO | Air Go Airlines | Egypt | ||
| EO | Express One International | United States | Operation stopped in 2002 | |
| EO | flyCongo | Democratic Republic of Congo | Operation ceased in 2013 | |
| EO | Hewa Bora Airways | Democratic Republic of Congo | 2012 renamed to flyCongo | |
| EP | Iran Aseman Airlines | Iran | ||
| EQ | TAME | Ecuador | Operation ceased in 2020 | |
| HE | Astar Air Cargo | United States | Operation ceased in 2012 | |
| HE | DHL Airways | United States | Code is no longer used | |
| IT | DHL Aviation | Bahrain | ||
| ET | Ethiopian Airlines | Ethiopia | ||
| EU | Ecuatoriana | Ecuador | Operation stopped in 2006 | |
| EU | Chengdu Airlines | China | ||
| EU | United Eagle Airlines | China | 2009 renamed to Chengdu Airlines | |
| EV | Atlantic Southeast Airlines | United States | Merged into ExpressJet Airlines in 2012 | |
| EV | ExpressJet Airlines | United States | ||
| EW | Eurowings | Germany | ||
| EX | Excalibur Airways | United Kingdom | Operation ceased in 1996 | |
| EX | Thai Express Air | Thailand | ||
| EY | Eagle Air | Tanzania | Operation stopped in 2002 | |
| EY | Etihad Airways | United Arab Emirates | ||
| EZ | Evergreen International Airlines | United States | Operation ceased in 2013 | |
| EZ | Sun Air of Scandinavia | Denmark | ||
| F1 | Farelogix | United States | no airline | |
| F2 | Falcon Air Express | United States | Operation ceased in 2015 | |
| F2 | Flyair | Turkey | Operation ceased in 2007 | |
| F2 | Safarilink Aviation | Kenya | ||
| F3 | FAI rent-a-jet | Germany | ||
| F4 | Air flamenco | Puerto Rico | ||
| F4 | Shanghai Airlines Cargo | China | Operation stopped in 2011 | |
| F5 | Aerotrans Cargo | Republic of Moldova | ||
| F5 | Cosmic Air | Nepal | Operation stopped in 2008 | |
| F6 | Zhejiang Airlines | China | Operation stopped in 2004 | |
| F7 | Volare Aviation Enterprise | Ukraine | Operation stopped in 2009 | |
| F7 | Darwin Airline | Switzerland | Branding Etihad Regional, previous code: 0D | |
| F8 | Flair Airlines | Canada | ||
| F8 | Flying Carpet Airlines | Lebanon | 2009 renamed Med Airways | |
| F8 | Freedom Airlines | United States | Operation stopped in 2010 | |
| F9 | Frontier Airlines | United States | ||
| FA | Safair | South Africa | ||
| FB | Bulgaria Air | Bulgaria | ||
| FB | Fine Air | United States | Operation stopped in 2002 | |
| FC | Falcon Express Cargo Airlines | United Arab Emirates | Operation ceased in 2012 | |
| FC | Tempelhof Express Airlines | Germany | Operation stopped in 2000 | |
| FC | Flybe Nordic | Finland | 2015 renamed Nordic Regional Airlines | |
| FC | Viva Colombia | Colombia | ||
| FD | Cityflyer Express | United Kingdom | Operation stopped in 2000 | |
| FD | Thai AirAsia | Thailand | ||
| FE | Far Eastern Air Transport | Taiwan | ||
| FE | Royal Khmer Airlines | Cambodia | Operation ceased in 2007 | |
| FF | Airshop BV | Netherlands | no airline | |
| FF | Tower Air | United States | Operation stopped in 2000 | |
| FG | Ariana Afghan Airlines | Afghanistan | ||
| FH | Freebird Airlines | Turkey | ||
| FI | Icelandair | Iceland | ||
| FJ | Air Pacific | Fiji | In 2012 it was renamed Fiji Airways | |
| FJ | Fiji Airways | Fiji | ||
| FJ | Fiji Link | Fiji | ||
| FK | Air Sul | Portugal | Operation ceased in 1992 | |
| FK | Keewatin Air | Canada | Code is no longer used | |
| FK | KF Cargo | Canada | ||
| FL | AirTran Airways | United States | Merged into Southwest Airlines in 2014 | |
| FM | FedEx / Federal Express | United States | Code FM used until 1994, new code: FX | |
| FM | Shanghai Airlines | China | ||
| FN | Fastjet Airlines | Tanzania | ||
| FN | Regional Air Lines | Morocco | Operation stopped in 2009 | |
| FP | TAG Aviation | Switzerland | Code is no longer used | |
| FQ | Brindabella Airlines | Australia | Operation ceased in 2013 | |
| FR | Ryanair | Ireland | ||
| FS | Servicios de Transportes Aéreos Fueguinos (TRAF) | Argentina | Operation ceased in 2005 | |
| FS | Syphax Airlines | Tunisia | ||
| FT | Fly Egypt | Egypt | ||
| FT | Flying Tiger Line (Flying Tigers) | United States | 1989 taken over by Federal Express | |
| FT | Siem Reap Airways | Cambodia | Operation stopped in 2008 | |
| FU | Air Littoral | France | Operation stopped in 2004 | |
| FU | ARTOP Linhas Aéreas | Portugal | Operation ceased in 1958 | |
| FV | Pulkovo Airlines | Russia | Merged in 2006 in Rossija | |
| FV | Rossiya | Russia | ||
| FV | Viva Air | Spain | 1999 integrated into Iberia | |
| FW | Ibex Airlines | Japan | ||
| FX | FedEx / Federal Express | United States | ||
| FX | German Cargo | Germany | 1993 renamed Lufthansa Cargo | |
| FY | Firefly | Malaysia | ||
| FZ | Air facilities | Australia | Code is no longer used | |
| FZ | Broome Aviation | Australia | Code is no longer used | |
| FZ | Fly Dubai | United Arab Emirates | ||
| G2 | Avirex | Gabon | 2008 renamed Jet Express | |
| G3 | Emerald Airways | United Kingdom | Operation stopped in 2006 | |
| G3 | Gol Linhas Aéreas | Brazil | ||
| G4 | Guizhou Airlines | China | 1998 merged with China Southern Airlines | |
| G4 | Allegiant Air | United States | ||
| G5 | China Express Airlines | China | ||
| G6 | Guine Bissau Airlines | Guinea-Bissau | Operation ceased in 2003 | |
| G7 | Gandalf Airlines | Italy | Operation stopped in 2004 | |
| G7 | GoJet Airlines | United States | ||
| G8 | GoAir | India | ||
| G9 | Air Arabia | United Arab Emirates | ||
| G9 | Gol Linhas Aéreas | Brazil | new code: G3 | |
| GA | Garuda Indonesia | Indonesia | ||
| GB | Airborne Express | United States | Operation stopped in 2004 | |
| GB | ABX Air | United States | ||
| GC | Gambia International Airlines | Gambia | Operation ceased in 2007 | |
| GC | Global Feeder Services | Australia | no airline | |
| GD | Grandstar Cargo | China | Operation ceased in 2012 | |
| GE | TransAsia Airways | Republic of China (Taiwan) | ||
| GF | Gulf Air | Bahrain, Qatar, Oman, United Arab Emirates | ||
| GG | Air Guyane | French Guyana | ||
| GG | Air Holland | Netherlands | new code: HD | |
| GG | Cargo 360 | United States | Merged with Southern Air in 2008 | |
| GG | Sky Lease Cargo | United States | ||
| GH | Ghana Airways | Ghana | Operation stopped in 2004 | |
| GH | Globus Airlines | Russia | ||
| GI | Itek Air | Kyrgyzstan | Operation stopped in 2010 | |
| GJ | Eurofly | Italy | Operation stopped in 2010 | |
| GJ | Zhejiang Loong Airlines | China | ||
| GK | Jetstar Japan | Japan | ||
| GL | Air Greenland | Greenland | ||
| GL | AirGlow Aviation Services | United Arab Emirates | ||
| GL | Miami Air International | United States | new code: LL | |
| GM | Air Slovakia | Slovakia | Operation stopped in 2010 | |
| GM | Germania flight | Switzerland | renamed Chair | |
| GM | Tri-MG Intra Asia Airlines | Indonesia | ||
| GN | Air Gabon | Gabon | Operation stopped in 2006 | |
| GO | Go fly | United Kingdom | Operation stopped in 2002 | |
| GO | ULS Airlines Cargo | Turkey | ||
| GP | Gestair Executive Jet | Spain | Code is no longer used | |
| GP | Pantanal Linhas Aéreas | Brazil | Operation ceased in 2013 | |
| GQ | Big Sky Airlines | United States | Operation stopped in 2008 | |
| GQ | Sky Express SA | Greece | ||
| GR | Aurigny Air Services | guernsey | ||
| GR | Gemini Air Cargo | United States | Operation stopped in 2008 | |
| GS | Airfoyle | United Kingdom | Operation stopped in 2000 | |
| GS | Grant Aviation | United States | Code is no longer used | |
| GS | Tianjin Airlines | China | ||
| GT | GB Airways | United Kingdom | Operation stopped in 2008 | |
| GU | Aviateca | Guatemala | ||
| GW | Kuban Airlines | Russia | Operation ceased in 2012 | |
| GX | GX Airlines | China | ||
| GX | Pacificair | Philippines | Operation ceased in 2003 | |
| GY | Colorful Guizhou Airlines | China | ||
| GY | Gabon Airlines | Gabon | Operation stopped in 2011 | |
| GY | Guyana Air | Guyana | 2001 renamed Guyana Air 2000 | |
| GY | Guyana Air 2000 | Guyana | Operation ceased in 2003 | |
| GZ | Air Rarotonga | New Zealand | ||
| H1 | Hahn Air Systems | Germany | no airline | |
| H1 | Hooters Air | United States | Operation stopped in 2006 | |
| H2 | City Bird | Belgium | Operation stopped in 2001 | |
| H2 | Sky Airline | Chile | ||
| H3 | Harbor Air | Canada | Code is no longer used | |
| H4 | Inter Islands Airlines | Cape Verde | Operation stopped in 2009 | |
| H5 | Mavial Magadan Airlines | Russia | Operation stopped in 2006 | |
| H5 | I-fly | Russia | new code: I4 | |
| H6 | Bulgarian Air Charter | Bulgaria | ||
| H6 | Chelyabinsk Air Enterprise | Russia | In 2004 merged with Siberia Airlines | |
| H6 | Hageland Aviation Service | United States | ||
| H7 | Eagle Air | Uganda | Code is no longer used | |
| H8 | Dalavia | Russia | Operation stopped in 2008 | |
| H9 | Himalaya Airlines | Nepal | ||
| H9 | Pegasus Airlines | Turkey | new code: PC | |
| HA | Hawaiian Airlines | United States | ||
| HB | Asia Atlantic Airlines | Thailand | ||
| HB | Harbor Airlines | United States | Code is no longer used | |
| HC | Aero Tropics Air Services | Australia | Operation stopped in 2008 | |
| HD | Air Thu | Japan | ||
| HD | Air Holland | Netherlands | Operation stopped in 2004 | |
| HD | Hokkaido International Airlines | Japan | In 2012 it was renamed Air Do. | |
| HE | German Airways | Germany | ||
| HE | LGW Luftfahrtgesellschaft Walter | Germany | renamed to German Airways; Operation ceased in 2020 | |
| HE | Trans European Airways (TEA) | Belgium | Operation ceased in 1991 | |
| HF | Air Côte d'Ivoire | Ivory Coast | ||
| HF | Hapag-Lloyd flight | Germany | now TUIfly , new code since July 2007: X3 | |
| HG | Niki aviation | Austria | Flight operations ceased on December 14, 2017, became Laudamotion | |
| HH | Air Hamburg | Germany | Code is no longer used | |
| HH | Iceland flight | Iceland | Operation ceased in 2005 | |
| HH | Somali Airlines | Somalia | Operation ceased in 1991 | |
| HH | Taban Air | Iran | ||
| HI | Papillon Airways | United States | ||
| HI | Papillon Crand Canyon Helicopters | United States | renamed Papillon Airways | |
| HJ | Air Haiti | Haiti | Operation ceased in 1982 | |
| HJ | Asian Express Airlines | Australia | 2008 renamed Tasman Cargo Airlines | |
| HJ | Swedeways | Sweden | Operation stopped in 2001 | |
| HJ | Tasman Cargo Airlines | Australia | ||
| HK | Four Star Air Cargo | Puerto Rico | Operation stopped in 2009 | |
| HK | Hamburg Airways | Germany | Operation stopped in 2014 | |
| HK | Skippers Aviation | Australia | ||
| HK | Yangon Airways | Myanmar | new code: YH | |
| HL | Holiday Express | Germany | 1988 integrated into Hamburg Airlines | |
| HM | Air Seychelles | Seychelles | ||
| HN | HeavyLift Cargo Airlines | Australia | Code is no longer used | |
| HN | Proteus Helicopters | France | Operation stopped in 2009 | |
| HN | NLM City Hopper | Netherlands | 1991 merged into KLM Cityhopper | |
| HO | Antinea Airlines | Algeria | In 2001 Khalifa Airways risen | |
| HO | Juneyao Airlines | China | ||
| HP | Amapola Flyg | Sweden | ||
| HP | America West Airlines | United States | Merged with US Airways in 2006 | |
| HQ | Thomas Cook Belgium Airlines | Belgium | ||
| MR | Hahn Air Lines | Germany | ||
| HT | Hellenic Imperial Airways | Greece | Operation ceased in 2012 | |
| HT | Ningxia Cargo Airlines | China | ||
| HT | Royal Airways | India | 2005 renamed to SpiceJet | |
| HU | Hainan Airlines | China | ||
| HV | Transavia Airlines | Netherlands | ||
| HW | Hello | Switzerland | Operation ceased in 2012 | |
| HW | Holiday Airlines | Turkey | Operation ceased in 1996 | |
| HW | North-Wright Airways | Canada | ||
| HX | Trans North Aviation | United States | Code is no longer used | |
| HX | Hong Kong Airlines | China | ||
| HY | Uzbekistan Airways | Uzbekistan | ||
| HZ | Aurora Airlines | Russia | ||
| HZ | SAT Airlines | Russia | Merged into Aurora Airlines in 2013 | |
| I2 | Iberia Express | Spain | ||
| I4 | I-fly | Russia | ||
| I4 | Island Air Express | United States | ||
| I5 | AirAsia India | India | ||
| I7 | Inter Îles Air | Comoros | ||
| I8 | Izhavia | Russia | ||
| I9 | Air Italy (2005) | Italy | Acquired by Meridiana in 2013 ; Operation ceased in 2020 | |
| IA | Iraqi Airways | Iraq | Code is no longer used | |
| IB | Iberia | Spain | ||
| IC | Indian Airlines | India | In 2011, Air India merged | |
| ID | Air Normandy | France | Code is no longer used | |
| ID | Batik Air | Indonesia | ||
| IE | Solomon Airlines | Solomon Islands | ||
| IF | Contract Air Cargo | United States | ||
| IF | Fly Baghdad Airlines | Iraq | ||
| IF | Islas Airways | Spain | Operation ceased in 2012 | |
| IF | Italy First | Italy | Operation ceased in 2005 | |
| IF | Interflug | GDR | Operation ceased in 1991 | |
| IG | Alisarda | Italy | 1991 renamed to Meridiana | |
| IG | Meridiana | Italy | ||
| IH | Aerolinee Itavia | Italy | Operation ceased in 1980 | |
| IH | Falcon Air | Sweden | Operation stopped in 2006 | |
| IJ | Air Liberté | France | 2001 renamed Air Lib | |
| IJ | Great Wall Airlines | China | Operation stopped in 2011 | |
| IJ | Spring Airlines Japan | Japan | ||
| IK | Air Kiribati | Kiribati | ||
| IK | ICAR | Russia | Renamed to Pegas Fly in 2014 | |
| IK | Pegas Fly | Russia | ||
| IK | Imair Airlines | Azerbaijan | Operation stopped in 2009 | |
| IL | Istanbul Airlines | Turkey | Operation stopped in 2000 | |
| IL | Trigana Air Service | Indonesia | ||
| IL | Aircompany ATMA | Kazakhstan | ||
| IN THE | Intense air | South Africa | Operation stopped in 2002 | |
| IN | Macedonian Airlines MAT | Macedonia | Operation stopped in 2009 | |
| IN | NAM Air | Indonesia | ||
| IP | Atyrau Airways | Kazakhstan | Operation stopped in 2010 | |
| IP | Inter European Airways | United Kingdom | In 1993 Airtours International risen | |
| IP | Orbest Orizonia Airlines | Spain | Operation ceased in 2013 | |
| IP | Transportes Aéreos da Índia Portuguesa | Portugal | Operation ceased in 1961 | |
| IQ | Augsburg Airways | Germany | Operation ceased in 2013 | |
| IQ | Qazaq Air | Kazakhstan | ||
| IR | Iran Air | Iran | ||
| IS | Island Airlines | United States | Operation ceased in 2015 | |
| IS | Sunways Intersun | Turkey | Operation ceased in 1997 | |
| IT | Air Inter | France | 1997 integrated into Air France | |
| IT | Kingfisher Airlines | India | Operation ceased in 2012 | |
| IT | Tigerair Taiwan | Taiwan | ||
| IV | VG Airlines | Belgium | Operation stopped in 2002 | |
| IV | VVB Aviation Malta | Malta | ||
| IV | Wind jet | Italy | Operation ceased in 2012 | |
| IW | Air Lib | France | Operation ceased in 2003 | |
| IW | AOM French Airlines | France | 2001 merged into Air Lib | |
| IW | Wings Abadi Airlines | Indonesia | ||
| IY | Yemenia | Yemen | ||
| IZ | Arkia Israeli Airlines | Israel | ||
| J1 | One jet | United States | ||
| J2 | Azerbaijan Airlines | Azerbaijan | ||
| J3 | Northwestern Air | Canada | ||
| J4 | Badr Airlines | Sudan | ||
| J4 | Buffalo Airways | Canada | Code is no longer used | |
| J5 | Alaska Seaplane Service | United States | ||
| J6 | Avcom Commercial Aviation | Russia | Operation stopped in 2000 | |
| J6 | Jet ops | United Arab Emirates | ||
| J6 | Larry's Flying Service | United States | Code is no longer used | |
| J7 | Center-Avia | Russia | Operation stopped in 2010 | |
| J7 | ValuJet | United States | 1997 renamed to AirTran Airways , new code: FL | |
| J8 | Berjaya Air | Malaysia | ||
| J9 | Jazeera Airways | Kuwait | ||
| YES | JetSmart | Chile | ||
| YES | Air Bosna | Bosnia Herzegovina | Operations ceased in 2003, renamed to B&H Airlines in 2005 | |
| YES | B&H Airlines | Bosnia Herzegovina | Operation ceased in 2015 | |
| JB | Helijet International | Canada | Code is no longer used | |
| JC | Japan Air Commuter | Japan | ||
| JC | JAL Express | Japan | Operation stopped in 2014 | |
| JD | Japan Air System | Japan | Operation stopped in 2002 | |
| JD | Beijing Capital Airlines | China | ||
| JE | Arab Airways (Jerusalem) | Jordan | In 1958 Air Jordan risen | |
| JE | Jettainer | Germany | no airline, logistics company | |
| JE | mango | South Africa | ||
| JE | Manx Airlines | Isle of Man | Operation stopped in 2002 | |
| JF | Jetairfly | Belgium | new code: TB | |
| JF | LAB Flying Service | United States | Operation stopped in 2008 | |
| JG | Jetgo Australia | Australia | ||
| JH | Fuji Dream Airlines | Japan | ||
| JH | Harlequin Air | Japan | Operation ceased in 2005 | |
| JI | Jade Cargo International | China | Operation stopped in 2011 | |
| JI | Meraj Air | Iran | ||
| YY | TAM Linhas Aéreas | Brazil | In 2016 the company was renamed LATAM Brasil | |
| YY | LATAM Brazil | Brazil | ||
| JK | Spanair | Spain | Operation ceased in 2012 | |
| JL | Japan Airlines | Japan | ||
| JM | Air Jamaica | Jamaica | In 2011, Caribbean Airlines risen | |
| JN | Jordan Airways | Jordan | Operation ceased in 1961 | |
| JN | Livingston Compagnia Aerea | Italy | Operation stopped in 2014 | |
| JN | Rich International Airways | United States | Operation ceased in 1997 | |
| JN | XL Airways UK | United Kingdom | Operation stopped in 2008 | |
| JO | JALways | Japan | Operation stopped in 2010 | |
| JP | Adria Airways | Slovenia | Operation discontinued in 2019 | |
| JP | Inex-Adria Aviopromet | Yugoslavia | 1986 renamed Adria Airways | |
| JQ | Air Jamaica Express | Jamaica | Operation ceased in 2005 | |
| JQ | Jetstar Airways | Australia | ||
| JQ | Alba Star | Spain | new code: AP | |
| JR | Aero California | Mexico | Operation stopped in 2008 | |
| JR | Joy Air | China | ||
| JS | Air Koryo | North Korea | ||
| JT | Lion Air | Indonesia | ||
| JT | Transair | Australia | Operation stopped in 2006 | |
| JU | Air Serbia | Serbia | ||
| JU | JAT Airways | Serbia | 2013 renamed Air Serbia | |
| JU | Jugoslovensky Aerotransport | Yugoslavia | 2003 renamed to JAT Airways | |
| JV | Bearskin Airlines | Canada | ||
| JW | Arrow Air | United States | Operation stopped in 2010 | |
| JW | Skippers Aviation | Australia | Code is no longer used | |
| JW | Vanilla Air | Japan | ||
| JX | DAC Aviation | Kenya | ||
| JX | Nice helicopters | France | Code is no longer used | |
| JY | Inter Caribbean Airways | Turks and Caicos Islands | ||
| JZ | Skyways | Sweden | Operation ceased in 2012 | |
| K1 | topaz | South Korea | no airline, reservation systems | |
| K2 | EuroLOT | Poland | Operation ceased in 2015 | |
| K3 | SAC | Kenya | ||
| K3 | Taquan Air | United States | ||
| K4 | Kalitta Air | United States | ||
| K5 | SeaPort Airlines | United States | ||
| K5 | Wings of Alaska | United States | Merged into SeaPort Airlines in 2015 | |
| K6 | Cambodia Angkor Air | Cambodia | ||
| K6 | Khalifa Airways | Algeria | Operation ceased in 2003 | |
| K7 | Air KBZ | Myanmar | ||
| K7 | Sakha Avia | Russia | 2002 renamed to Yakutia Airlines | |
| K8 | InterJet West | United States | ||
| K8 | Kan Air | Thailand | ||
| K8 | Zambia Skyways | Zambia | Operation stopped in 2010 | |
| K9 | Kalitta Charters | United States | ||
| K9 | Krylo Aviakompania | Russia | Operation stopped in 2006 | |
| K9 | Skyward Aviation | Canada | Operation ceased in 2005 | |
| KA | Cathay Dragon | Hong Kong | ||
| KB | Drukair | Bhutan | ||
| KC | Air Astana | Kazakhstan | ||
| KC | Conair of Scandinavia | Denmark | Operation ceased in 1993 | |
| KD | Kal Star Aviation | Indonesia | ||
| KD | KD Avia | Russia | Operation stopped in 2009 | |
| KD | Kendell Airlines | Australia | Operation stopped in 2001 | |
| KD | Regional Express Airlines | Australia | new code: ZL | |
| KD | Western Global Airlines | United States | ||
| KE | Korean Air | South Korea | ||
| Theatrical Version | Air Botnia | Finland | 2004 renamed to Blue1 | |
| Theatrical Version | Blue1 | Finland | ||
| KG | Caledonian Airways | United Kingdom | 2000 integrated into JMC Airlines | |
| KG | Key Lime Air | United States | ||
| KG | Línea Aérea IAACA (LAI) | Venezuela | Operation stopped in 2006 | |
| KG | Orion Airways | United Kingdom | 1989 merged with Britannia Airways | |
| KH | Aloha Air Cargo | United States | ||
| AI | Adam Air | Indonesia | Operation stopped in 2008 | |
| AI | Contact Air | Germany | Operation ceased in 2012 | |
| AI | KrasAvia | Russia | ||
| KJ | Air Incheon | South Korea | ||
| KJ | British Mediterranean Airways | United Kingdom | 2007 integrated into British Midland Airways / bmi | |
| KJ | Sultan Air | Turkey | Operation ceased in 1993 | |
| KK | AtlasGlobal | Turkey | Operation ceased in 2020 | |
| KL | KLM - Royal Dutch Airlines | Netherlands | ||
| KM | Air Malta | Malta | ||
| KN | China United Airlines | China | ||
| KN | Maroomba Airlines | Australia | Code is no longer used | |
| KN | Moris Air | United States | 1995 merged with Southwest Airlines | |
| KO | Alaska Central Express | United States | ||
| KO | Khors Air Company | Ukraine | Code is no longer used | |
| KO | Komiaviatrans | Russia | ||
| KP | Asky Airlines | Togo | ||
| KQ | Kenya Airways | Kenya | ||
| KR | Air Bishkek | Kyrgyzstan | ||
| KR | Karair | Finland | 1990 integrated into Finnair | |
| KR | Kitty Hawk Air Cargo | United States | Operation stopped in 2008 | |
| KS | Penair | United States | ||
| KT | Kampuchea Airlines | Cambodia | Operation stopped in 2004 | |
| KU | Kuwait Airways | Kuwait | ||
| KV | Kavminvodyavia (KMV) | Russia | Operation stopped in 2011 | |
| KW | Kelowna Flightcraft | Canada | renamed to KF Cargo | |
| KW | KAS Air Company | Kyrgyzstan | Code no longer used | |
| KX | Cayman Airways | Cayman Islands | ||
| KY | Air Sao Tome and Principe | Sao Tome & Principe | Operation stopped in 2006 | |
| KY | Kunming Airlines | China | ||
| concentration camp | Nippon Cargo Airlines | Japan | ||
| L1 | Airlliance | United States | ||
| L1 | Lufthansa Systems | Germany | new code: S1 | |
| L2 | Lynden Air Cargo | United States | ||
| L3 | DHL de Guatemala | Guatemala | ||
| L4 | Lauda Air Italia | Italy | 2003 merged into Livingston Energy Flight | |
| L5 | Atlantique Air Assistance | France | ||
| L5 | CHC Helicopter Service | Norway | Code is no longer used | |
| L6 | Mauritania Airlines International | Mauritania | ||
| L7 | LAN Cargo Colombia | Colombia | ||
| L7 | Laoag International Airlines | Philippines | Operation stopped in 2002 | |
| L8 | Afric Aviation | Gabon | ||
| L9 | Compagnie Aérienne du Mali | Mali | In 2009 the company was renamed Air Mali | |
| L9 | Air Mali (2009) | Mali | Operation ceased in 2012 | |
| L9 | Bristow US | United States | ||
| L9 | Belle Air Europe | Italy | Operation ceased in 2013 | |
| LA | LAN Airlines | Chile | ||
| LA | Lan Chile | Chile | renamed to LAN Airlines | |
| LB | Air Costa | India | ||
| LB | Lloyd Aéreo Boliviano | Bolivia | Operation stopped in 2010 | |
| LC | Varig log | Brazil | Operation ceased in 2012 | |
| LC | Equatorial Congo Airlines | Congo | ||
| LD | Air Hong Kong | Hong Kong | ||
| LD | Línea Turística Aereotuy | Venezuela | Code is no longer used | |
| LE | Helgoland Airlines | Germany | Operation ceased in 2003 | |
| LF | Corporate flight management | United States | ||
| LF | Linair | Hungary | Operation ceased in 2003 | |
| LF | Linjeflyg | Sweden | 1993 merged with Scandinavian Airlines | |
| LG | Luxair | Luxembourg | ||
| LH | Lufthansa | Germany | ||
| LH | Lufthansa Cargo | Germany | ||
| LH | Lufthansa Italia | Italy | Operation stopped in 2011 | |
| LI | LIAT | Antigua and Barbuda | ||
| LJ | Jin Air | South Korea | ||
| LJ | Sierra National Airlines | Sierra Leone | Operation ceased in 2005 | |
| LK | Air Luxor | Portugal | Operation stopped in 2006 | |
| LL | Líneas Aéreas Allegro | Mexico | Operation stopped in 2004 | |
| LL | Miami Air International | United States | Operation ceased in 2020 | |
| LM | Air ALM | Netherlands Antilles | Operation stopped in 2002 | |
| LM | Livingston Energy Flight | Italy | Operation stopped in 2010 | |
| LM | Loganair | United Kingdom | ||
| LN | Libyan Airlines | Libya | ||
| LN | Libyan Arab Airlines | Libya | renamed to Libyan Airlines | |
| LO | LOT Polish Airlines / Polskie line Lotnicze | Poland | ||
| LP | LAN Perú | Peru | ||
| LR | Avianca Costa Rica | Costa Rica | ||
| LR | Lacsa | Costa Rica | renamed Avianca Costa Rica | |
| LS | Channel Express | United Kingdom | 2006 merged into Jet2.com | |
| LS | Iliamna Air Taxi | United States | Code is no longer used | |
| LS | Jet2.com | United Kingdom | ||
| LT | Air Lituanica | Lithuania | Operation ceased in 2015 | |
| LT | LTU | Germany | integrated in Air Berlin | |
| LU | LAN Express | Chile | ||
| LV | Albanian Airlines | Albania | Operation stopped in 2011 | |
| LV | Latavio | Estonia | Operation ceased in 1996 | |
| LV | Mega Maldives Airlines | Maldives | ||
| LW | Pacific Wings | United States | Operation ceased in 2013 | |
| LX | Crossair | Switzerland | 2002 renamed to Swiss International Air Lines | |
| LX | Swiss International Air Lines | Switzerland | ||
| LY | El Al | Israel | ||
| LZ | Balkan Bulgarian Airlines | Bulgaria | Operation stopped in 2002 | |
| LZ | Belle Air | Albania | Operation ceased in 2013 | |
| LZ | Swiss Global Air Lines | Switzerland | ||
| M0 | Aero Mongolia | Mongolia | ||
| M2 | Mahfooz Aviation | Gambia | Code is no longer used | |
| M2 | MHS Aviation | Germany | ||
| M2 | Millon Express | United States | ||
| M3 | North Flying | Denmark | ||
| M3 | TAM Cargo | Brazil | ||
| M4 | Avioimpex | Macedonia | Operation stopped in 2002 | |
| M4 | Mistral Air | Italy | renamed to Poste Air Cargo | |
| M4 | Poste Air Cargo | Italy | ||
| M5 | Kenmore Air | United States | ||
| M6 | Amerijet International | United States | ||
| M7 | MAS Air Cargo | Mexico | ||
| M7 | Superior Aviation Services | Kenya | Code is no longer used | |
| M8 | Med Airlines | Italy | Operation stopped in 2001 | |
| M8 | Moscow Airways | Russia | Operation ceased in 1996 | |
| M8 | Skyjet Airlines | Philippines | ||
| M8 | Trans Maldivian Airways | Maldives | Code is no longer used | |
| M9 | Modes Air | India | Operation ceased in 1996 | |
| M9 | Motor yourself airlines | Ukraine | ||
| MA | Malév | Hungary | Operation ceased in 2012 | |
| MB | Execaire | Canada | Code is no longer used | |
| MB | MNG Airlines | Turkey | ||
| MC | Air Mobility Command | United States | no airline | |
| MD | Air Madagascar | Madagascar | ||
| ME | Middle East Airlines (MEA) | Lebanon | ||
| MF | Xiamen Airlines | China | ||
| MG | Champion Air | United States | Operation stopped in 2008 | |
| MG | Miami Air Lease | United States | ||
| MH | Malaysia Airlines | Malaysia | ||
| MI | Silk Air | Singapore | ||
| MJ | LAPA | Argentina | Operation ceased in 2003 | |
| MJ | Mihin Lanka | Sri Lanka | Operation stopped in 2016 | |
| MJ | MyWay Airlines | Georgia | ||
| ML | Air Méditerranée | France | Operation stopped in 2016 | |
| ML | Midway Airlines | United States | Operation ceased in 1991 | |
| ML | Olympic Aviation | Greece | Operation ceased in 2003 | |
| MM | EuroAtlantic Airways | Portugal | new code: YU | |
| MM | Peach Aviation | Japan | ||
| MM | SAM Colombia | Colombia | Operation stopped in 2010 | |
| MN | Kulula | South Africa | ||
| MO | Calm Air | Canada | ||
| MO | Abu Dhabi Amiri Flight | United Arab Emirates | Code is no longer used | |
| MP | Martinair Holland | Netherlands | ||
| MQ | Envoy Air | United States | ||
| MQ | American Eagle Airlines | United States | Renamed to Envoy Air in 2014 | |
| MQ | Simmons Airlines | United States | 1998 merged with American Eagle Airlines | |
| MR | Air Mauritanie | Mauritania | Operation ceased in 2007 | |
| MR | Hunnu Air | Mongolia | ||
| MS | Egypt Air | Egypt | ||
| MT | Flying Colors Airlines | United Kingdom | 2000 merged with JMC Airlines | |
| MT | JMC Airlines | United Kingdom | 2008 merged with Thomas Cook Airlines UK | |
| MT | Thomas Cook Airlines UK | United Kingdom | Code is no longer used | |
| MU | China Eastern Airlines | China | ||
| MV | Manas Air | Kyrgyzstan | Operation stopped in 2001 | |
| MW | Maya Island Air | Belize | new code: MY | |
| MW | Mokulele Airlines | United States | ||
| MX | Mexicana | Mexico | Operation stopped in 2010 | |
| MY | Air Mali (1960) | Mali | Operation ceased in 1989 | |
| MY | MAS Air Cargo | Mexico | new code: M7 | |
| MY | Maya Island Air | Belize | ||
| MY | Midwest Airlines | Egypt | Operation ceased in 2012 | |
| MZ | Amakusa Airlines | Japan | ||
| MZ | Merpati Nusantara Airlines | Indonesia | Operation stopped in 2014 | |
| N2 | Aerolíneas Internacionales | Mexico | Operation ceased in 2003 | |
| N2 | Trans Mediterranean Airways | Lebanon | Flight operations have been suspended since 2014 | |
| N3 | Aerolíneas Mas | Dominican Republic | ||
| N4 | Nordwind Airlines | Russia | ||
| N5 | Nolinor Aviation | Canada | ||
| N6 | Aero Continente | Peru | 2004 renamed Nuevo Continente | |
| N6 | Nomad Aviation | Namibia | ||
| N6 | Nuevo Continente | Peru | Operation ceased in 2005 | |
| N7 | National Airlines | United States | Operation stopped in 2002 | |
| N7 | My Jet Xpress Airlines | Malaysia | ||
| N7 | Nordic East Airways | Sweden | 1996 renamed to Nordic European Airlines | |
| N7 | Nordic Regional Airlines | Finland | ||
| N8 | National Airlines (2007) | United States | ||
| N8 | Norwegian Air Shuttle | Norway | new code: DY | |
| N9 | Air Åland | Finland | Operation ceased in 2012 | |
| N9 | Kabo Air | Nigeria | Code is no longer used | |
| N9 | Novair | Sweden | ||
| N / A | National Airlines | United States | In 1980 Pan American World Airways risen | |
| N / A | North American Airlines | United States | Operation stopped in 2014 | |
| NB | Skypower Express Airways | Nigeria | ||
| NB | Sterling Airlines | Denmark | Operation stopped in 2008 | |
| NC | Cobham | Australia | ||
| NC | National Jet Systems | Australia | renamed Cobham | |
| NC | North Central Airlines | United States | 1979 merged with Republic Airlines | |
| NC | Northern Air Cargo | United States | ||
| ND | Airlink | Papua New Guinea | Operation ceased in 2007 | |
| ND | FMI Air | Myanmar | ||
| ND | Nordair | Canada | 1987 merged with Canadian Airlines International | |
| ND | Sky wings | Greece | Operation ceased in 2012 | |
| NE | Nesma Airlines | Egypt | ||
| NE | Northeast Airlines | United States | 1972 merged with Delta Air Lines | |
| NF | Air Vanuatu | Vanuatu | ||
| NG | Aero Contractors | Nigeria | ||
| NG | Lauda Air | Austria | Operation ceased in 2013 | |
| NH | All Nippon Airways | Japan | ||
| NI | Portugália Airlines | Portugal | ||
| NJ | Vanguard Airlines | United States | Operation stopped in 2002 | |
| NK | Spirit Airlines | United States | ||
| NL | Shaheen Air International | Pakistan | ||
| NM | Air Madrid | Spain | Operation stopped in 2006 | |
| NN | VIM Airlines | Russia | ||
| NO | Neos | Italy | ||
| NO | Niger Air Cargo | Niger | ||
| NP | Heavylift Cargo Airlines | United Kingdom | Operation stopped in 2006 | |
| NP | Nile Air | Egypt | ||
| NP | Skytrans Airlines | Australia | Code is no longer used | |
| NQ | Air Japan | Japan | ||
| NO | Pamir Airways | Afghanistan | Operation stopped in 2011 | |
| NS | Eurowings | Germany | new code: EW | |
| NS | Hebei Airlines | China | ||
| NS | Northeast Airlines | China | 2010 merged into Hebei Airlines | |
| NS | Northeast Airlines | United Kingdom | Merged with British Airways in 1976 | |
| NS | Nuremberg Air Service | Germany | renamed to Eurowings | |
| NT | Binter canarias | Spain | ||
| NU | Aero Contractors | Nigeria | new code: NG | |
| NU | Japan Transocean Air | Japan | ||
| NV | Air Central | Japan | Operation stopped in 2010 | |
| NV | Northern Executive Aviation | United Kingdom | Operation ceased in 2005 | |
| NW | Northwest Airlines / Northwest Orient Airlines | United States | 2010 merged into Delta Air Lines | |
| NX | Air Macau | Macau | ||
| NY | Air Iceland | Iceland | ||
| NY | New York Air | United States | 1987 merged with Continental Airlines | |
| NZ | Air New Zealand | New Zealand | ||
| O2 | OLT Express Regional | Poland | Operation ceased in 2012 | |
| O3 | Orange Air | United States | ||
| O3 | SF Airlines | China | ||
| O4 | Antrak Air | Ghana | Code is no longer used | |
| O6 | Avianca Brazil | Brazil | Operation discontinued in 2019 | |
| O6 | OceanAir | Brazil | renamed Avianca Brazil | |
| O7 | Orenburzhye | Russia | ||
| O8 | Oasis Hong Kong Airlines | Hong Kong | Operation stopped in 2008 | |
| O8 | Siam Air Transport | Thailand | ||
| O9 | Nova Airways | Sudan | ||
| OA | Olympic Air | Greece | ||
| OA | Olympic Airlines | Greece | Successor to Olympic Airways, operations ceased in 2009 | |
| OA | Olympic Airways | Greece | Operation ceased in 2003 | |
| IF | Boliviana de Aviación | Bolivia | ||
| OC | Air California (Air Cal) | United States | 1987 integrated into American Airlines | |
| OC | Omni Aviation | Portugal | Code is no longer used | |
| OC | Oriental Air Bridge | Japan | ||
| OD | Malindo Air | Malaysia | ||
| OE | Laudamotion | Austria | Code was assigned on February 8, 2018 | |
| OF | Air Finland | Finland | Operation ceased in 2012 | |
| OH | Comair | United States | Operation ceased in 2012 | |
| OH | PSA Airlines | United States | ||
| OI | Aspiring Air | New Zealand | Code is no longer used | |
| OI | Hinterland Aviation | Australia | ||
| OJ | Fly Jamaica Airways | Jamaica | Operation discontinued in 2019 | |
| OK | CSA Czech Airlines | Czech Republic | ||
| OIL | Polynesian Airlines | Samoa | 2017 renamed Samoa Airways | |
| OIL | Samoa Airways | Samoa | ||
| OM | MIAT Mongolian Airlines | Mongolia | ||
| ON | Air Nauru | Nauru | 2006 renamed Our Airline | |
| ON | Nauru Airlines | Nauru | ||
| ON | Our airline | Nauru | 2014 renamed Nauru Airlines | |
| OO | SkyWest Airlines | United States | ||
| OP | Air Panama Internacional | Panama | Operation ceased in 1990 | |
| OP | Air Pegasus | India | ||
| OP | Chalk's Ocean Airways | United States | Operation ceased in 2007 | |
| OQ | Chongqing Airlines | China | ||
| OQ | Sunrise Airlines | United States | Operation stopped in 2000 | |
| OR | TUI Airlines Nederland | Netherlands | ||
| OS | Austrian Airlines | Austria | ||
| OT | Aeropelican Air Services | Australia | Operation ceased in 2013 | |
| OU | Croatia Airlines | Croatia | ||
| OV | Aéromaritime International | France | 1991 merged with Air France | |
| OV | Estonian Air | Estonia | Operation ceased in 2015 | |
| OW | Executive Airlines | United States | Operation ceased in 2013 | |
| OX | Orient Thai Airlines | Thailand | ||
| OY | Andes Líneas Aéreas | Argentina | ||
| OY | Omni Air International | United States | ||
| OZ | Asiana Airlines | South Korea | ||
| P0 | Proflight Zambia | Zambia | ||
| P1 | Aviation Technologies | United States | no airline | |
| P2 | AirKenya Express | Kenya | ||
| P2 | Tyumenaviatrans Aviation | Russia | 2003 renamed to UTair | |
| P2 | UTair | Russia | new code: UT | |
| P3 | CargoLogicAir | United Kingdom | ||
| P3 | Premier Trans Aire | United States | Code is no longer used | |
| P4 | Aerolíneas Sosa | Honduras | Code is no longer used | |
| P5 | AeroRepública | Colombia | 2006 renamed to Copa Airlines Colombia | |
| P5 | Copa Airlines Colombia | Colombia | ||
| P6 | Pascan Aviation | Canada | ||
| P6 | Privilege style | Spain | ||
| P6 | Transair | United States | Code is no longer used | |
| P7 | East Line Airlines | Russia | 2004 renamed to Russian Sky Airlines | |
| P7 | Russian Sky Airlines | Russia | 2005 merged with VIM Airlines | |
| P7 | Small Planet Airlines (Italy) | Italy | Flight operations stopped in 2014 | |
| P7 | Small Planet Airlines (Poland) | Poland | ||
| P8 | Air Mekong | Vietnam | Operation ceased in 2013 | |
| P9 | Asia Pacific Airlines | United States | ||
| P9 | Peruvian Airlines | Peru | ||
| P9 | Pro Air | United States | new code: XL | |
| PA | Airblue | Pakistan | ||
| PA | Pan American World Airways (Pan Am) | United States | Operation ceased in 1991 | |
| PB | Panair do Brasil | Brazil | Operation ceased in 1965 | |
| PB | Provincial Airlines | Canada | ||
| Pc | Air Fiji | Fiji | Operation ceased in 2009 | |
| Pc | Continental Airways | Russia | Operation ceased in 2007 | |
| Pc | Envirotainer | Sweden | no airline, manufacturer of refrigerated containers | |
| Pc | Pacific Air Lines | United States | 1968 merged with Air West | |
| Pc | Pegasus Airlines | Turkey | ||
| PD | Porter Airlines | Canada | ||
| PE | Pacific Air Express | Australia | ||
| PE | People Express | United States | 1987 merged with Continental Airlines | |
| PE | People's | Austria | ||
| PF | Palestinian Airlines | Palestine | Code is no longer used | |
| PF | Primera Air Scandinavia | Denmark | ||
| PG | Bangkok Airways | Thailand | ||
| PH | Phoenix Air | United States | ||
| PH | Polynesian Airlines | Samoa | new code: OL | |
| PI | Pacific Sun | Fiji | 2014 renamed Fiji Link, new code: FJ | |
| PI | Piedmont Airlines (1948) | United States | 1989 merged in USAir | |
| PI | Sunflower Airlines | Fiji | Renamed to Pacific Sun in 2007 | |
| PJ | Air St. Pierre | France | ||
| PK | Pakistan International Airlines | Pakistan | ||
| PL | Aeroperú | Peru | Operation ceased in 1999 | |
| PL | Southern Air Charter | Bahamas | ||
| PM | Canary Fly | Spain | ||
| PM | Prescott Support | United States | no airline, logistics company | |
| PM | Tropic Air | Belize | new code: 9N | |
| PN | China West Air | China | ||
| PO | Polar Air Cargo | United States | ||
| PP | Jet Aviation Business Jets | Switzerland | ||
| PQ | AirAsia Philippines | Philippines | ||
| PR | Philippine Airlines | Philippines | ||
| PS | Pacific Southwest Airlines (PSA) | United States | 1988 merged in USAir | |
| PS | Ukraine International Airlines | Ukraine | ||
| PT | Piedmont Airlines (1993) | United States | ||
| PT | West Atlantic Sweden | Sweden | Code is no longer used | |
| PU | PLUNA | Uruguay | Operation ceased in 2012 | |
| PU | Plus Ultra Líneas Aéreas | Spain | ||
| PV | Eastern Provincial Airways | Canada | 1986 merged with CP Air | |
| PV | PrivatAir | Switzerland | ||
| PV | Saint Barth Commuter | France | ||
| PW | German wings | Germany | Operation ceased in 1990 | |
| PW | Pacific Western Airlines (PWA) | Canada | 1987 merged with Canadian Airlines International | |
| PW | Precision Air | Tanzania | ||
| PX | Air Niugini | Papua New Guinea | ||
| PY | Suriname Airways | Surinam | ||
| PZ | TAM Airlines | Paraguay | ||
| Q1 | Sqiva Sistem | Indonesia | no airline, reservation systems | |
| Q2 | Maldivian | Maldives | ||
| Q3 | Zambian Airways | Zambia | Operation stopped in 2009 | |
| Q5 | 40-mile air | United States | ||
| Q6 | Aero Cóndor Perú | Peru | Code is no longer used | |
| Q7 | SkyBahamas Airlines | Bahamas | ||
| Q7 | Sobelair | Belgium | Operation stopped in 2004 | |
| Q8 | Trans Air Congo | Congo | ||
| Q9 | Minerva Airlines | Italy | ||
| QA | Aerocaribe | Mexico | 2005 renamed Click Mexicana | |
| QA | Cimber | Denmark | ||
| QA | Click Mexicana | Mexico | 2008 renamed MexicanaClick | |
| QA | MexicanaClick | Mexico | Operation stopped in 2010 | |
| QB | Air Alma | Canada | Operation stopped in 2001 | |
| QB | Qeshm Airlines | Iran | ||
| QB | Quebecair | Canada | In 1987 Inter-Canadian risen | |
| QC | Air Congo | Zaire | In 1971 the company was renamed Air Zaire | |
| QC | Air Zaire | Zaire | Operation ceased in 1995 | |
| QC | Aviation Quebec Labrador | Canada | Operation stopped in 2001 | |
| QC | Camair-Co | Cameroon | ||
| QD | Transbrasil | Brazil | Code QD used until 1982 (thereafter TR) | |
| QE | Crossair Europe | France | Operation ceased in 2005 | |
| QF | JetConnect | New Zealand | ||
| QF | Qantas Airways | Australia | ||
| QG | Citilink | Indonesia | ||
| QG | Delta Air Transport | Belgium | 2002 renamed to SN Brussels Airlines | |
| QG | Dynamic Airlines | Netherlands | Code is no longer used | |
| QH | Air Florida | United States | Operation ceased in 1984 | |
| QH | Air Kyrgyzstan | Kyrgyzstan | ||
| QH | Pel-Air | Australia | Code is no longer used | |
| QI | Cimber Air | Denmark | 2008 renamed to Cimber Sterling | |
| QI | Cimber Sterling | Denmark | Operation ceased in 2012 | |
| QJ | Jetways Airways | United States | ||
| QJ | Latpass Airlines | Latvia | Operation stopped in 2004 | |
| QJ | Paramount Airways | United Kingdom | Operation ceased in 1989 | |
| QK | Aéromaritime | France | 1990 renamed Aéromaritime International | |
| QK | Jazz Aviation | Canada | ||
| QL | LASER Airlines | Venezuela | ||
| QL | Lesotho Airways | Lesotho | Operation ceased in 1997 | |
| QM | Air Malawi | Malawi | Operation ceased in 2013 | |
| QM | Monacair | Monaco | ||
| QN | Air Armenia | Armenia | Operation stopped in 2014 | |
| QN | Royal Aviation | Canada | 2001 merged in Canada 3000 | |
| QO | Aeromexpress | Mexico | Operation stopped in 2004 | |
| QO | Origin Pacific Airways | New Zealand | Operation stopped in 2006 | |
| QO | Quikjet Cargo Airlines | India | ||
| QP | Airkenya | Kenya | 2007 renamed AirKenya Express , new code: P2 | |
| QP | Regional Air | Kenya | Operation ceased in 2005 | |
| QP | Starlight Airlines | United Arab Emirates | no airline, freight broker | |
| Alliance Airlines | Australia | |||
| Reno Air | United States | Operation ceased in 1999 | ||
| QR | Qatar Airways | Qatar | ||
| QS | Smart wings | Czech Republic | ||
| QS | Travel Service | Czech Republic | ||
| QT | Avianca Cargo | Colombia | ||
| QT | Regional Air | Papua New Guinea | 2005 merged into Hevilift | |
| QT | Tampa Cargo | Colombia | 2013 renamed to Avianca Cargo | |
| QU | Azur Air Ukraine | Ukraine | ||
| QU | Uganda Airlines | Uganda | Operation stopped in 2001 | |
| QU | UTair Ukraine | Ukraine | Renamed to Azur Air Ukraine in 2015 | |
| QV | Lao Airlines | Laos | ||
| QV | Lao Aviation | Laos | 2004 renamed Lao Airlines | |
| QW | Qingdao Airlines | China | ||
| QW | Saarland Airlines | Germany | Operation ceased in 1993 | |
| QW | Turks and Caicos Airways | Turks and Caicos Islands | Operation stopped in 2002 | |
| QX | Horizon Air | United States | ||
| QY | European Air Transport | Germany | ||
| QZ | Indonesia AirAsia | Indonesia | ||
| R1 | Zapways | United States | no airline, reservation system | |
| R2 | Orenburg Airlines | Russia | ||
| R3 | Yakutia Airlines | Russia | ||
| R4 | Rossiya | Russia | new code: FV | |
| R4 | RUS Aviation | United Arab Emirates | ||
| R5 | Jordan Aviation | Jordan | ||
| R5 | Malta Air Charter | Malta | Operation stopped in 2004 | |
| R6 | DOT LT | Lithuania | ||
| R6 | Air Srpska | Bosnia Herzegovina | Operation ceased in 2003 | |
| R7 | Aserca Airlines | Venezuela | ||
| R7 | CHEP Aerospace Solutions | Switzerland | no airline | |
| R9 | TAF Linhas Aéreas | Brazil | Operation stopped in 2010 | |
| R9 | Village Aviation | United States | Code is no longer used | |
| RA | Nepal Airlines | Nepal | ||
| RB | Syrian Arab Airlines | Syria | ||
| RC | Atlantic Airways | Faroe Islands | ||
| RC | Republic Airlines | United States | 1986 integrated into Northwest Airlines | |
| RD | REDjet | Barbados | Operation ceased in 2012 | |
| RD | Ryan International Airlines | United States | Operation ceased in 2013 | |
| RE | Aer Arann | Ireland | Operation stopped in 2014 | |
| RF | Florida West International | United States | ||
| RG | Rotana Jet | United Arab Emirates | ||
| RG | VARIG | Brazil | Operation stopped in 2010 | |
| RH | Air Rhodesia | Rhodesia | Operation ceased in 1979 | |
| RH | Regionnair | Canada | Operation stopped in 2001 | |
| RH | Robin Hood Aviation | Austria | Operation stopped in 2011 | |
| RI | Mandala Airlines | Indonesia | Operation stopped in 2014 | |
| RJ | Royal Jordanian (Alia) | Jordan | ||
| RK | Air Afrique | West Africa | Operation stopped in 2001 | |
| RK | R Airlines | Thailand | Operation stopped in 2018 | |
| RL | Airworld | United Kingdom | Operation ceased in 1998 | |
| RL | Royal Flight Airlines | Russia | ||
| RL | Royal Phnom Penh Airways | Cambodia | Operation stopped in 2004 | |
| RM | Air Moldova International | Republic of Moldova | Operation stopped in 2002 | |
| RN | Euralair | France | Operation ceased in 2003 | |
| RN | Rayani Air | Malaysia | ||
| RO | TAROM | Romania | ||
| RP | Chautauqua Airlines | United States | Operation stopped in 2014 | |
| RQ | Swisswings | Switzerland | Operation stopped in 2002 | |
| RQ | Came Air | Afghanistan | ||
| RR | Ryanair Sun SA | Poland | ||
| RR | Royal Air Force | United Kingdom | no airline | |
| RS | Oman Royal Flight | Oman | Code is no longer used | |
| RT | Airlines of South Australia | Australia | Operation ceased in 2005 | |
| RT | Rainbow Airlines | Zimbabwe | ||
| RU | AirBridgeCargo | Russia | ||
| RV | Air Canada Rouge | Canada | ||
| RV | Reeve Aleutian Airways | United States | Operation stopped in 2000 | |
| RW | Air West | United States | 1970 renamed Hughes Airwest | |
| RW | Hughes Airwest | United States | 1980 integrated into Republic Airlines | |
| RW | Rheinland Air Service | Germany | Code is no longer used | |
| RX | Regent Airways | Bangladesh | ||
| RY | European Executive Express | Sweden | Operation ceased in 2005 | |
| RY | Jiangxi Air | China | ||
| RY | Royal Air Lao | Laos | Operation ceased in 1975 | |
| RY | Royal Wings | Jordan | ||
| RZ | Sansa Airlines | Costa Rica | ||
| S1 | Lufthansa Systems | Germany | no airline | |
| S2 | Air Sahara | India | 2007 renamed JetLite | |
| S2 | JetKonnect | India | Merged into Jet Airways in 2014 | |
| S2 | JetLite | India | Merged into JetKonnect in 2012 | |
| S3 | Santa Barbara Airlines | Venezuela | ||
| S4 | SATA International | Portugal | ||
| S5 | Shuttle America | United States | ||
| S5 | Small Planet Airlines (Lithuania) | Lithuania | ||
| S6 | Sunrise Airways | Haiti | ||
| S7 | S7 Airlines | Russia | ||
| S7 | Siberia Airlines | Russia | 2006 renamed S7 Airlines | |
| S8 | Elk Airways | Estonia | Operation stopped in 2001 | |
| S8 | Sky Capital Airlines | Bangladesh | ||
| S8 | Sounds Air | New Zealand | ||
| S9 | Silk Road Cargo Business | Uzbekistan | ||
| S9 | Starbow | Ghana | ||
| S9 | Transjet Airways | Sweden | Operation stopped in 2002 | |
| SA | South African Airways | South Africa | ||
| SB | Aircalin | New Caledonia | ||
| SC | Cruzeiro do Sul | Brazil | Operation ceased in 1993 | |
| SC | Shandong Airlines | China | ||
| SD | Sudan Airways | Sudan | ||
| SE | Samoa Aviation | American Samoa | Operation ceased in 2003 | |
| SE | XL Airways France | France | Operation discontinued in 2019 | |
| SF | Air charter | France | Operation ceased in 1998 | |
| SF | Tassili Airlines | Algeria | ||
| SG | SpiceJet | India | ||
| SG | Jetsgo | Canada | Operation ceased in 2005 | |
| SH | Aeris | France | Operation ceased in 2003 | |
| SH | Sharp Airlines | Australia | ||
| SI | Blue Islands | guernsey | ||
| SI | Sierra Pacific Airlines | United States | ||
| SJ | Sriwijaya Air | Indonesia | ||
| SK | SAS Scandinavian Airlines | Denmark, Norway, Sweden | ||
| SL | Air Sylhet | Austria | Operation stopped in 2009 | |
| SL | Rio Sul | Brazil | Operation stopped in 2002 | |
| SL | Thai Lion Air | Thailand | ||
| SM | Air Cairo | Egypt | ||
| SM | Spirit of Manila Airlines | Philippines | Operation ceased in 2012 | |
| SM | Sunworld International Airlines | United States | Operation stopped in 2004 | |
| SM | Swedline | Sweden | Operation stopped in 2006 | |
| SN | Brussels Airlines | Belgium | ||
| SN | Sabena | Belgium | Operation stopped in 2001 | |
| SN | SN Brussels Airlines | Belgium | 2006 renamed to Brussels Airlines | |
| SO | APEX Airlines | Myanmar | ||
| SO | Superior Aviation | United States | Code is no longer used | |
| SP | SATA Air Açores | Portugal | ||
| SQ | Singapore Airlines | Singapore | ||
| SQ | Singapore Airlines Cargo | Singapore | ||
| SR | Sundair | Germany | ||
| SR | Swissair | Switzerland | Operations ceased on March 31, 2002 | |
| SS | Corsair International | France | ||
| SS | Corsairfly | France | renamed to Corsair International | |
| SS | Silver City Airways | United Kingdom | In 1963 British United Air Ferries risen | |
| ST | Germania | Germany | Operation discontinued in 2019 | |
| ST | Yanda Airlines | Australia | Operation stopped in 2001 | |
| SU | Aeroflot | Russia | ||
| SV | Saudi Arabian Airlines (Saudia) | Saudi Arabia | ||
| SW | Air Namibia | Namibia | ||
| SX | Skybus Airlines | United States | Operation stopped in 2006 | |
| SX | SkyWork Airlines | Switzerland | ||
| SY | Skippers Aviation | Australia | new code: JW | |
| SY | Sun Country Airlines | United States | ||
| SZ | China Southwest Airlines | China | Merged into Air China in 2002 | |
| SZ | Somon Air | Tajikistan | ||
| T0 | Avianca Perú | Peru | Operation ceased in 2020 | |
| T0 | TACA Peru | Peru | 2013 renamed Avianca Perú | |
| T1 | Tik Systems | Thailand | no airline | |
| T3 | Eastern Airways | United Kingdom | ||
| T4 | Hellas Jet | Greece | Operation stopped in 2010 | |
| T4 | Rhoades Aviation | United States | ||
| T4 | Transeast Airlines | Latvia | Operation stopped in 2001 | |
| T4 | TRIP Linhas Aéreas | Brazil | Operation ceased in 2013 | |
| T5 | Turkmenistan Airlines | Turkmenistan | ||
| T6 | AirSWIFT | Philippines | ||
| T6 | Iceland Transvoyager | Philippines | 2015 renamed to AirSWIFT | |
| T6 | Tavrey Airlines | Ukraine | Operation stopped in 2008 | |
| T7 | Transcarga International Airways | Venezuela | ||
| T7 | Twin jet | France | ||
| T8 | MCS Aerocarga | Mexico | ||
| T9 | Aviator Aviation | Sweden | no airline | |
| T9 | Transmeridian Airlines | United States | Operation ceased in 2005 | |
| T9 | Varmlandsflyg (V-Air) | Sweden | Operation stopped in 2002 | |
| TA | Avianca El Salvador | El Salvador | ||
| TA | TACA | El Salvador | 2013 renamed Avianca El Salvador | |
| TB | Jetairfly | Belgium | ||
| TB | Trump Shuttle | United States | Operation ceased in 1992 | |
| TC | Air Tanzania | Tanzania | ||
| TE | Lithuanian Airlines | Lithuania | Operation stopped in 2010 | |
| TE | SkyTaxi | Poland | ||
| TF | Malmo Aviation | Sweden | ||
| TG | Thai Airways International | Thailand | ||
| TH | British Regional Airlines | United Kingdom | In 2002 merged with British Airways Citiexpress | |
| TH | Raya Airways | Malaysia | ||
| TH | Transmile Air Services | Malaysia | renamed to Raya Airways | |
| TI | Baltic International | Latvia | In 1995 Air Baltic risen | |
| TI | Tailwind Airlines | Turkey | ||
| TI | Texas International Airlines | United States | Operation ceased in 1982 | |
| TI | Tol Air Services | Puerto Rico | 2007 merged into Four Star Air Cargo | |
| TJ | TANS Perú | Peru | Operation stopped in 2006 | |
| TJ | Tradewind Aviation | United States | ||
| TK | Turkish Airlines | Turkey | ||
| TL | Airnorth | Australia | ||
| TL | Chartair | Australia | Code is no longer used | |
| TM | Linhas Aéreas de Moçambique | Mozambique | ||
| TN | Air Tahiti Nui | French Polynesia | ||
| TN | Trans Australian Airlines | Australia | Operation ceased in 1996 | |
| TO | President Airlines | Cambodia | Operation ceased in 2007 | |
| TO | Transavia France | France | ||
| TP | TAP Portugal | Portugal | ||
| TQ | Tandem aero | Republic of Moldova | ||
| TQ | Transwede | Sweden | Operation ceased in 1996 | |
| TT | Transbrasil | Brazil | Operation stopped in 2001 | |
| TR | Tiger Airways | Singapore | ||
| TS | Air Transat | Canada | ||
| TT | Air Lithuania | Lithuania | Operation ceased in 2005 | |
| TT | Tiger Airways Australia | Australia | ||
| TU | Tunisair | Tunisia | ||
| TV | Tibet Airlines | China | ||
| TV | Transamerica Airlines | United States | Operation ceased in 1986 | |
| TV | Virgin Express | Belgium | 2006 merged with SN Brussels Airlines | |
| TV | T'way Air | South Korea | ||
| TW | Trans World Airlines (TWA) | United States | Merged with American Airlines in 2001 | |
| TW | T'way Air | South Korea | ||
| TX | Air Caraïbes | France | ||
| TY | Air Calédonie | France | ||
| TY | Iberworld | Spain | 2011 renamed Orbest Orizonia Airlines , new code: IP | |
| TZ | Air-taxi europe | Germany | Code is no longer used | |
| TZ | American Trans Air | United States | 2003 renamed to ATA Airlines | |
| TZ | ATA Airlines | United States | Operation stopped in 2008 | |
| TZ | Scoot | Singapore | ||
| U1 | Videcom International | United Kingdom | no airline, reservation systems | |
| U2 | EasyJet Airline | United Kingdom | ||
| U4 | Buddha Air | Nepal | ||
| U5 | International Business Airlines (IBA) | Sweden | Code is no longer used | |
| U5 | Karinou Airlines | Central African Republic | ||
| U5 | USA 3000 Airlines | United States | Operation ceased in 2012 | |
| U6 | Ural Airlines | Russia | ||
| U7 | Air Uganda | Uganda | Operation stopped in 2014 | |
| U7 | USA Jet Airlines | United States | Code is no longer used | |
| U8 | Armavia | Armenia | Operation ceased in 2013 | |
| U8 | Austrian Airtransport | Austria | Operation stopped in 2001 | |
| U8 | TUS Airways | Cyprus | ||
| U9 | Tatarstan Air | Russia | Operation ceased in 2013 | |
| UA | United Airlines | United States | ||
| UB | Myanma Airways | Myanmar | 2015 renamed Myanmar National Airlines | |
| UB | Myanmar National Airlines | Myanmar | ||
| UC | Fast air carrier | Chile | 1998 absorbed into Ladeco | |
| UC | Ladeco | Chile | 2001 renamed to LAN Express , new code: LU | |
| UC | LAN Cargo | Chile | ||
| UD | Hex'Air | France | ||
| UE | Ultimate Air Shuttle | United States | ||
| UF | UM Air | Ukraine | Code is no longer used | |
| Basement | Sevenair | Tunisia | 2011 renamed to Tunisair Express | |
| Basement | Tuninter | Tunisia | 2000 renamed Sevenair | |
| Basement | Tunisair Express | Tunisia | ||
| UH | AtlasGlobal Ukraine | Ukraine | ||
| UI | Alaska Seaplane Service | United States | Code is no longer used | |
| UI | Auric Air Services | Tanzania | ||
| UI | Eurocypria | Cyprus | Operation stopped in 2010 | |
| UJ | AlMasria Universal Airlines | Egypt | ||
| UJ | USA Jet Airlines | United States | ||
| UK | AirUK | United Kingdom | 1998 renamed KLM UK | |
| UK | Buzz | United Kingdom | Operation stopped in 2004 | |
| UK | KLM UK | United Kingdom | Renamed to Buzz in 2000 | |
| UK | Vistara | India | ||
| UL | Air Lanka | Sri Lanka | 1999 renamed to SriLankan Airlines | |
| UL | SriLankan Airlines | Sri Lanka | ||
| AROUND | Air Zimbabwe | Zimbabwe | ||
| U.N. | Transaero Airlines | Russia | Operations ceased in 2015 | |
| UP | Bahamasair | Bahamas | ||
| UO | Hong Kong Express Airways | Hong Kong | ||
| UQ | O'Connor Airlines | Australia | Operation ceased in 2007 | |
| UQ | Urumqi Air | China | ||
| UR | Ukraine International Airlines | Ukraine | new code: PS | |
| US | US Airways | United States | 2013 merged with American Airlines | |
| UT | Union de Transports Aériens (UTA) | France | 1992 merged with Air France | |
| UT | UTair | Russia | ||
| UU | Air Austral | France | ||
| UV | Helicópteros del Sureste | Spain | Code is no longer used | |
| UV | Universal Airways | United States | ||
| UX | Air Europa | Spain | ||
| UY | Cameroon Airlines | Cameroon | Operation stopped in 2008 | |
| UZ | Tesis Aviation Enterprise | Russia | Operation stopped in 2008 | |
| V0 | Conviasa | Venezuela | ||
| V1 | IBS Software Services | United States | No airline | |
| V2 | Avialeasing Aviation | Uzbekistan | ||
| V2 | Virgin Sun Airlines | United Kingdom | Operation stopped in 2001 | |
| V3 | Carpatair | Romania | ||
| V4 | South Airlines | Ukraine | changed code: YG | |
| V4 | Venescar Internacional | Venezuela | ||
| V4 | Venus Airlines | Greece | Operation ceased in 1996 | |
| V5 | Aerovías DAP | Chile | Operation ceased in 2013 | |
| V5 | DanubeWings | Slovakia | Operation ceased in 2013 | |
| V6 | Vuelos Internos Privados | Ecuador | Integrated into AeroGal in 2012 | |
| V6 | VI Airlink | British Virgin Islands | ||
| V7 | Air Sénégal International | Senegal | Operation closed in 2009 | |
| V7 | Volotea | Spain | ||
| V8 | ATRAN | Russia | ||
| V8 | Iliamna Air Taxi | United States | ||
| V8 | Transportes Aéreos Petroleros (TAPSA) | Argentina | Operation stopped in 2001 | |
| V9 | Bashkirian Airlines | Russia | Operation ceased in 2007 | |
| V9 | Van Air Europe | Czech Republic | ||
| VA | VIASA | Venezuela | Operation ceased in 1997 | |
| VA | Virgin Australia | Australia | ||
| VA | Virgin Australia Regional Airlines | Australia | ||
| VA | Virgin Blue | Australia | 2011 renamed Virgin Australia | |
| VB | Maersk Air | Denmark | new code: DM | |
| VB | Viva Aerobus | Mexico | ||
| VC | Servivensa | Venezuela | Operation ceased in 2012 | |
| VC | Via airlines | United States | ||
| VD | Air Liberté | France | new code: IJ | |
| VE | AVENSA | Venezuela | Operation stopped in 2009 | |
| VF | British World Airlines | United Kingdom | Operation stopped in 2001 | |
| VF | Nevis Express | St. Kitts & Nevis | Operation ceased in 2003 | |
| VF | Valuair | Singapore | Operation stopped in 2014 | |
| VG | Air Siam | Thailand | Operation ceased in 1977 | |
| VG | VLM Airlines | Belgium | ||
| VH | Aeropostal | Venezuela | ||
| VI | Vieques Air Link | United States | Code is no longer used | |
| VI | Volga-Dnepr Airlines | Ukraine | ||
| VJ | Royal Air Cambodge | Cambodia | Operation stopped in 2001 | |
| VJ | VietJet Air | Vietnam | ||
| VK | Air Tungaru | Kiribati | Operation ceased in 1996 | |
| VK | Air Vallée | Italy | ||
| VK | Level Europe | Austria | Operation ceased in 2020 | Level operated by Level Europe |
| VL | Air Via | Bulgaria | ||
| VL | Eagle Air of Iceland | Iceland | Operation ceased in 1990 | |
| VL | Med-View Airline | Nigeria | ||
| VL | North Vancouver Airlines | Canada | Operation ceased in 2003 | |
| VM | Max Air | Nigeria | ||
| VM | Regional Airlines | France | Operation ceased in 2005 | |
| VN | Vietnam Airlines | Vietnam | ||
| VO | Tyrolean Airways | Austria | now Austrian Arrows with OS flight numbers | |
| VP | Indochina Airlines | Vietnam | Operation stopped in 2009 | |
| VP | Viação Aérea São Paulo (VASP) | Brazil | Operation ceased in 2005 | |
| VP | Villa Air | Maldives | ||
| VQ | Impulse Airlines | Australia | Operation stopped in 2004 | |
| VQ | Novoair | Bangladesh | ||
| VR | TACV Cabo Verde Airlines | Cape Verde | ||
| VS | Virgin Atlantic | United Kingdom | ||
| VT | Air Tahiti | France | ||
| VU | Air Ivoire | Ivory Coast | Operation stopped in 2011 | |
| VU | Veca Airlines | El Salvador | ||
| VV | Aerosvit Airlines | Ukraine | Operation ceased in 2013 | |
| VW | Aeromar | Mexico | ||
| VX | Virgin America | United States | ||
| VY | Vueling Airlines | Spain | ||
| VZ | Aero VIP | Uruguay | ||
| VZ | Airtours International | United Kingdom | 2002 renamed MyTravel Airways | |
| VZ | MyTravel Airways | United Kingdom | 2008 merged with Thomas Cook Airlines UK | |
| VZ | Thai Vietjet Air | Thailand | ||
| W1 | World ticket | Denmark | no airline | |
| W2 | FlexFlight ApS | Denmark | ||
| W3 | Arik Air | Nigeria | ||
| W4 | Aero Services Executive | France | Operation stopped in 2010 | |
| W4 | LC Perú | Peru | ||
| W4 | M&N Aviation | United States | Code is no longer used | |
| W5 | Mahan Air | Iran | ||
| W6 | Wizz Air | Hungary | ||
| W7 | Sayakhat | Uzbekistan | Operation ceased in 2005 | |
| W7 | Wings of Lebanon | Lebanon | ||
| W8 | Cargojet Airways | Canada | ||
| W9 | Air Bagan | Myanmar | ||
| WA | KLM Cityhopper | Netherlands | ||
| WA | Western Airlines | United States | 1987 merged with Delta Air Lines | |
| WB | RwandAir | Rwanda | ||
| WC | Isleña Airlines | Honduras | ||
| WD | DAS Air Cargo | Uganda | Operation ceased in 2007 | |
| WD | Wardair Canada | Canada | 1990 merged with Canadian Airlines | |
| WE | Centurion Air Cargo | United States | Operation stopped in 2018 | |
| WE | Challenge Air Cargo | United States | renamed to Centurion Air Cargo | |
| WE | Thai Smile Airways | Thailand | ||
| WF | Widerøe's Flyveselskap | Norway | ||
| Flat share | Sunwing Airlines | Canada | ||
| Flat share | Wasaya Airways | Canada | Code is no longer used | |
| WH | China Northwest Airlines | China | Merged with China Eastern Airlines in 2002 | |
| WH | WebJet Linhas Aéreas | Brazil | Operation ceased in 2012 | |
| WH | Westair Benin | Benin | ||
| WI | Sky Lease Cargo | United States | new code: GG | |
| WI | Tradewinds Airlines | United States | renamed to Sky Lease Cargo | |
| WI | White Airways | Portugal | ||
| WJ | Air Labrador | Canada | ||
| WK | Active Air | Turkey | Operation ceased in 1996 | |
| WK | American Falcon | Argentina | Operation stopped in 2004 | |
| WK | Edelweiss Air | Switzerland | ||
| WK | Greenair | Turkey | In 1994 the company was renamed Active Air | |
| WL | Aeroperlas | Panama | Operation ceased in 2012 | |
| WL | Lao Air Lines | Laos | Operation ceased in 1975 | |
| WM | Winair | Netherlands Antilles | ||
| WN | Southwest Airlines | United States | ||
| WHERE | World Airways | United States | Operation stopped in 2014 | |
| WP | Island Air | United States | ||
| WQ | Romavia | Romania | Operation stopped in 2010 | |
| WQ | Swift Air | United States | ||
| WR | Aviaprad | Russia | Operation stopped in 2008 | |
| WR | Royal Tongan Airlines | Tonga | Operation stopped in 2004 | |
| WR | WestJet Encore | Canada | ||
| WS | Westjet Airlines | Canada | ||
| WT | Swiftair | Spain | ||
| WU | Wizz Air Ukraine | Ukraine | Operation ceased in 2015 | |
| WU | Wuhan Airlines | China | 2003 merged with China Eastern Airlines | |
| WV | Aero VIP | Portugal | ||
| WW | bmibaby | United Kingdom | Operation ceased in 2012 | |
| WW | Maui Airlines | United States | Operation ceased in 1988 | |
| WW | WOW air | Iceland | Operation discontinued in 2019 | |
| WX | CityJet | Ireland | ||
| WY | Oman Air | Oman | ||
| WZ | Acvila Air | Romania | 2006 merged into JeTran Air | |
| WZ | JeTran Air | Romania | Operation stopped in 2008 | |
| WZ | Red Wings Airlines | Russia | ||
| X3 | Hapag-Lloyd Express | Germany | now TUIfly | |
| X3 | TUIfly | Germany | ||
| X4 | Air excursion | United States | ||
| X4 | XL Airways Germany | Germany | Operation ceased in 2012 | |
| X5 | Afrique Airlines | Benin | Operation stopped in 2006 | |
| X5 | Cronus Airlines | Greece | Operation stopped in 2001 | |
| X7 | Air Service Gabon | Gabon | Operation stopped in 2010 | |
| X7 | Chitaavia | Russia | 2004 merged with VIM Airlines | |
| X7 | Exec Air | Nepal | ||
| X7 | Zambia Skyways | Zambia | new code: K8 | |
| X7 | Airmax Cargo | Peru | no airline, logistics company | |
| X8 | Icaro Air | Ecuador | Operation stopped in 2011 | |
| X9 | Avion Express | Lithuania | ||
| X9 | Khors Air Company | Ukraine | new code: KO | |
| X9 | Omni Air International | United States | new code: OY | |
| X9 | Avion Express | Lithuania | ||
| XA | ARINC | United States | no airline, flight systems | |
| XB | IATA | Canada | no airline, international umbrella organization of the aviation industry | |
| XC | Corendon Airlines | Turkey | ||
| XC | KD Air | Canada | Code is no longer used | |
| XD | Airlines for America | United States | no airline, umbrella organization for US airlines | |
| XF | Vladivostok Avia | Russia | In 2014 Aurora Airlines risen | |
| XG | Clickair | Spain | Operation stopped in 2009 | |
| XG | Sunexpress Germany | Germany | Operation ceased in 2020 | |
| XH | Global Supply Systems | Great Britain | Closing of operations in 2010 | |
| XH | Special Ground Handling Service | United States | no airline | |
| XI | Aeronautical Telecommunications (AEROTEL) | Jamaica | no airline, communication systems | |
| XJ | Mesaba Airlines | United States | Operation ceased in 2012 | |
| XJ | Thai AirAsia X | Thailand | ||
| XK | CCM Airlines | France | 2010 renamed Air Corsica | |
| XK | Air Corsica | France | ||
| XL | Country Connection Airlines | Australia | Operation stopped in 2002 | |
| XL | LAN Ecuador | Ecuador | ||
| XL | Pro Air | United States | Operation stopped in 2000 | |
| XM | Alitalia Express | Italy | 2015 merged into Alitalia | |
| XM | Australian Air Express | Australia | Operation ceased in 2012 | |
| XM | J-Air | Japan | Code is no longer used | |
| XN | Axon Airlines | Greece | Operation stopped in 2001 | |
| XO | China Xinjiang Airlines | China | 2003 merged with China Southern Airlines | |
| XO | LTE International Airways | Spain | Operation stopped in 2008 | |
| XO | South East Asian Airlines International | Philippines | ||
| XQ | Sunexpress | Turkey | ||
| XR | Virgin Australia Regional Airlines | Australia | new code: VA | |
| XR | Skywest Airlines | Australia | 2013 renamed Virgin Australia Regional Airlines | |
| XS | SITA | Belgium | no airline, communication systems | |
| XT | Indonesia AirAsia X | Indonesia | ||
| XU | African Express Airways | Kenya | ||
| XV | Mississippi Valley Airlines | United States | 1985 merged with Air Wisconsin | |
| XW | NokScoot | Thailand | Operation ceased in 2020 | |
| XW | SkyExpress | Russia | Operation stopped in 2011 | |
| XY | Flynas | Saudi Arabia | ||
| XY | Kayala Airline | Saudi Arabia | Operation stopped in 2009 | |
| XZ | South African Express Airways | South Africa | ||
| Y1 | Travel Technology Interactive | France | no airline | |
| Y2 | Air Century | Dominican Republic | ||
| Y2 | Alliance Air | Uganda | Operation stopped in 2000 | |
| Y2 | Alliance Express | Rwanda | Operation stopped in 2002 | |
| Y2 | Flyglobespan | United Kingdom | Operation stopped in 2009 | |
| Y4 | Volaris | Mexico | ||
| Y5 | Golden Myanmar Airlines | Myanmar | ||
| Y6 | AB Aviation | Comoros | ||
| Y6 | Batavia Air | Indonesia | Operation ceased in 2013 | |
| Y6 | Europe Elite | United Kingdom | Disbanded in 2001, never started operations | |
| Y7 | Med Airways | Lebanon | Code is no longer used | |
| Y7 | NordStar | Russia | ||
| Y7 | Silverjet | United Kingdom | Operation stopped in 2008 | |
| Y8 | Passaredo Linhas Aéreas | Brazil | new code: 2Z | |
| Y8 | Suparna Airlines | China | ||
| Y9 | Kish Air | Iran | ||
| YA | Yeti Airlines | Nepal | Code is no longer used | |
| YB | Borajet | Turkey | ||
| YB | South African Express Airways | South Africa | new code: XZ | |
| YC | Flight West Airlines | Australia | Operation stopped in 2001 | |
| YC | Yamal Airlines | Russia | ||
| YD | Synergy Aviation | United Kingdom | ||
| YE | Yanair | Ukraine | ||
| YF | Department of National Defense | Canada | no airline | |
| YG | South Airlines | Ukraine | Operation ceased in 2013 | |
| YG | YTO Express Airlines | China | ||
| YH | Sunsplash Aviation | United States | ||
| YH | Yangon Airways | Myanmar | ||
| YI | Air Sunshine | United States | Code is no longer used | |
| YI | Yunnan Ying'An Airlines | China | ||
| YJ | AMC Aviation | Egypt | Code is no longer used | |
| YJ | Asian Wings Airways | Myanmar | ||
| YJ | National Airways Corporation | South Africa | Code is no longer used | |
| YK | Kıbrıs Türk Hava Yolları (KTHY) | Turkey / Northern Cyprus | Operation stopped in 2010 | |
| YK | Avia Traffic Company | Kyrgyzstan | ||
| YL | Libyan wings | Libya | ||
| YL | Yamal Airlines | Russia | new code: YC | |
| YM | Montenegro Airlines | Montenegro | ||
| YN | Air Creebec | Canada | ||
| YO | Heli Air Monaco | Monaco | ||
| YP | Perimeter Aviation | Canada | ||
| YQ | Euro Air helicopter service | Sweden | Code is no longer used | |
| YQ | Polet Airlines | Russia | Operation stopped in 2014 | |
| YR | Scenic Airlines | United States | ||
| YS | HOP! -Regional | France | ||
| YS | Regional | France | 2013 renamed to HOP! -Régional | |
| YT | Air Togo | Togo | Operation stopped in 2000 | |
| YU | EuroAtlantic Airways | Portugal | ||
| YV | go! | United States | Integrated into Meas Airlines in 2014 | |
| YV | Mesa Airlines | United States | ||
| YW | Air Nostrum | Spain | ||
| YX | Midwest Airlines / Midwest Express Airlines | United States | Operation stopped in 2010 | |
| YX | Republic Airline | United States | ||
| Y Z | Air Bissau | Guinea-Bissau | Operation ceased in 1998 | |
| YX | Alas Uruguay | Uruguay | ||
| Z2 | AirAsia Zest | Philippines | ||
| Z2 | Zhongyuan Airlines | China | Operation stopped in 2000 | |
| Z3 | Avient Aviation | Zimbabwe | Operation ceased in 2013 | |
| Z3 | PM Air | United States | ||
| Z3 | Pro Mech Air | United States | renamed to PM Air | |
| Z4 | Zagrosjet | Iraq | ||
| Z4 | Zoom Airlines | Canada | Operation stopped in 2008 | |
| Z5 | Global Africa Aviation | Zimbabwe | ||
| Z5 | GMG Airlines | Bangladesh | Operation ceased in 2012 | |
| Z6 | Dniproavia | Ukraine | ||
| Z8 | Amas Bolivia | Bolivia | ||
| Z8 | Pulkovo Aviation Enterprise | Russia | new code: FV | |
| Z9 | Bek Air | Kazakhstan | ||
| ZA | Astair Airlines | Russia | 2005 renamed to Interavia Airlines | |
| ZA | Interavia Airlines | Russia | Operation stopped in 2008 | |
| ZA | Sky Angkor Airlines | Cambodia | ||
| E.g. | Air bourbon | France | Operation stopped in 2004 | |
| E.g. | Monarch Airlines | United Kingdom | Code is no longer used; Operation stopped in 2017 | |
| ZC | Royal Swazi National Airways | Swaziland | Operation ceased in 1999 | |
| ZD | EWA Air | France | ||
| ZE | Eastar Jet | South Korea | ||
| ZF | Athens Airways | Greece | Operation stopped in 2010 | |
| ZF | Azure Air | Russia | ||
| ZF | Safari Express Cargo | Kenya | ||
| ZG | Groznyy Avia | Russia | ||
| ZH | Shenzhen Airlines | China | ||
| ZI | Aigle Azur (1970) | France | Operation discontinued in 2019 | |
| ZJ | Air Routing International | United States | no airline | |
| ZK | Great Lakes Airlines | United States | ||
| ZK | ZetAvia | Ukraine | ||
| ZL | Affretair | Zimbabwe | Operation stopped in 2000 | |
| ZL | Hazelton Airlines | Australia | now Regional Express Airlines | |
| ZL | Regional Express (airline) | Australia | ||
| ZM | Air Manas | Kyrgyzstan | ||
| ZM | Scibe Airlift | Democratic Republic of Congo | Operation ceased in 1998 | |
| ZN | Eagle Airlines | Austria | Code is no longer used | |
| ZN | Naysa | Spain | ||
| ZO | Great Plains Airlines | United States | Operation stopped in 2004 | |
| ZO | Ozark Air Lines | United States | In 1986 Trans World Airlines risen | |
| ZP | Air St. Thomas | United States | ||
| ZP | Amaszonas del Paraguay | Paraguay | ||
| ZP | Silk Way Airlines | Azerbaijan | ||
| ZQ | Azman Air | Nigeria | ||
| ZQ | JetConnect | New Zealand | new code: QF | |
| ZR | Aviacon Zitotrans | Russia | ||
| ZR | Muk Air | Denmark | Operation stopped in 2001 | |
| ZT | Air Zambezi | Zimbabwe | Operation stopped in 2002 | |
| ZT | Titan Airways | United Kingdom | ||
| TO | Helios Airways | Cyprus | Operation stopped in 2006 | |
| ZV | Air Midwest | United States | Operation stopped in 2008 | |
| ZV | V Air | Taiwan | ||
| ZW | Air Wisconsin | United States | ||
| ZX | Air Georgian | Canada | ||
| ZY | Sky Airlines | Turkey | Operation ceased in 2013 |
See also
Web links
- Current airline members. IATA
- Query the code on the IATA homepage
- The Airline Codes Web Site (English)
- IATA & ICAO airline codes at Flugzeuginfo.net