|Founded||7 April 2015|
|Commenced operations||11 July 2016|
|Hubs||Incheon International Airport|
|Parent company||Asiana Airlines (100%)|
|Headquarters||176, Haneul-gil, Gangseo-gu, Seoul, Republic of Korea|
|Key people||Cho Kyu-yung, CEO|
Air Seoul (Korean: ?; RR: E-eo Seoul) is a South Korean low-cost carrier and a subsidiary of Asiana Airlines. The airline is based at Incheon International Airport in Seoul, from which it operates flights to international destinations. It launched operations on 11 July 2016.
Since early 2014, Asiana Airlines had considered launching a second low-cost carrier (LCC) in addition to Air Busan. It initially faced difficulties in proceeding with the project because of the Asiana Airlines Flight 214 crash in July 2013. Asiana has only a minority 46% stake in Air Busan, while it has a controlling stake in Air Seoul. Air Busan is based in Busan, which has allowed other LCCs such as Jin Air and Jeju Air to fill the Seoul market; Air Seoul is based in Seoul. The goals of Air Seoul are to strengthen Asiana's competition with other South Korean LCCs and to improve Asiana's performance in certain markets, such as secondary Japanese cities.
The airline was established on 7 April 2015. In June 2016, Air Seoul operated trial flights within South Korea. On 5 July 2016, the Ministry of Land, Infrastructure and Transport announced it had granted Air Seoul its air operator's certificate. Flights between Seoul-Gimpo and Jeju commenced on 11 July. The airline started flights to Japan in October 2016, its first international routes and has since moved to become a purely international airline.
In 2018, it carried 1.7 million passengers in 2018, up by 109% from 2017.
As of November 2020, Air Seoul flies the following destinations:
|Cambodia||Siem Reap||Siem Reap International Airport|||
|China||Hong Kong||Hong Kong International Airport||Suspended|||
|Linyi||Linyi Qiyang Airport||Suspended Indefinitely|||
|Macau||Macau International Airport||Terminated|||
|Yantai||Yantai Penglai International Airport|||
|Zhangjiajie||Zhangjiajie Hehua International Airport||Suspended Indefinitely|||
|Guam||Hagåtña||Antonio B. Won Pat International Airport||Suspended|||
|Osaka||Kansai International Airport|||
|Sapporo||New Chitose Airport|||
|Tokyo||Narita International Airport||Suspended|||
|Ube||Yamaguchi Ube Airport||Terminated|||
|Malaysia||Kota Kinabalu||Kota Kinabalu International Airport||Suspended|||
|Philippines||Kalibo||Kalibo International Airport||Suspended|||
|South Korea||Busan||Gimhae International Airport|||
|Cheongju||Cheongju International Airport|||
|Jeju||Jeju International Airport|||
|Seoul||Gimpo International Airport|||
|Incheon International Airport||Hub|||
|Vietnam||Da Nang||Da Nang International Airport||Suspended|||
|Hanoi||Noi Bai International Airport||Suspended|||
|Nha Trang||Cam Ranh International Airport||Suspended|||
On 7 November 2016, Air Seoul announced that it had collaborated with Naver WEBTOON to produce safety video. Some of the works featured in this video include Denma, The Sound of Heart, and Noblesse.
Air Seoul began offering an in-flight magazine entitled Your Seoul to passengers in January 2017. The magazine advertises the tourist attractions in the airline's hub city, Seoul.