Dahlström has been participating in AFP World Tour competitions since the 2010 season. She won her first victory at the European Freeski Open in Laax in March 2011 . At the 2011 Freestyle Skiing World Championships in Park City , she finished 13th. She completed her first World Cup race in February 2013 in Silvaplana which she finished in fourth place. In January 2014 she reached her first World Cup podiums with second place in Breckenridge . Another second place followed at the end of the season in Silvaplana and thus finally the second place in the Slopestyle World Cup. In her first Olympic participation in Sochi in 2014 , she was fifth in the first-ever slopestyle competition. At the beginning of the 2014/15 season she came second at The North Face Freeski Open of New Zealand in Cardrona and at the Winter Dew Tour in Breckenridge . Later in the season she won her first World Cup in Park City and came second in Silvaplana. She won the gold medal at the 2015 Winter X Games in Aspen . She finished the season in first place in the Slopestyle World Cup and first place in the AFP World Tour Slopestyle Ranking. At the beginning of the 2015/16 season, she came third in the Slopestyle at the Winter Dew Tour in Breckenridge . In the further course of the season she took third place at the World Cup and US Grand Prix in Mammoth, second place in Big Air at the World Cup and US Grand Prix in Boston and third place in slopestyle at the World Cup in Bokwang Phoenix Park in Pyeongchang . At the Winter X Games 2016 in Aspen , she was sixth in slopestyle. In February 2016 she won the bronze medal in Big Air at the X-Games Oslo 2016 in Oslo . At the end of the season she won the Slopestyle World Cup in Silvaplana and finally achieved seventh place in the overall World Cup and second place in the Slopestyle World Cup. In April 2017 she became the Swedish Big Air Champion in Kläppen . In the following season she won three Big Air World Cups. She also came second twice and won the Big Air World Cup at the end of the season. She also came fifth in the Slopestyle World Cup and second in the overall World Cup. At the Winter X Games 2017 she was sixth in Slopestyle and Big Air and eighth in Slopestyle and fifth in Big Air at the X-Games Norway 2017 in Hafjell . In mid-March 2017, she won in the Freestyle Skiing World Championships in Sierra Nevada won the silver medal in slopestyle. The following year she won fifth place in slopestyle at the Winter X Games and 11th place in slopestyle at the Winter Olympics in Pyeongchang.