IATA code
IATA codes are codes issued by the International Air Transport Association (IATA), which are primarily used to mark airports and airfields , airlines and aircraft types .
Airports
The IATA airport codes consist of three letters (e.g. FRA for Frankfurt am Main) and are therefore often referred to as 3LC (for three letter code ) in internal parlance in the aviation industry .
Parallel to the IATA airport codes , there are the ICAO codes , which consist of four letters (e.g. EDDF for Frankfurt am Main), with the first two letters used to break down into regions and countries worldwide.
Airlines
Aircraft types
Train stations
Web links
Wiktionary: IATA code - explanations of meanings, word origins, synonyms, translations