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.

[10] On 21 March 2019, Air Seoul with collaboration of Naver WEBTOON's LICO[11] introduced a new in-flight safety video.

Air Seoul is the first Korean airline to produce an in-flight safety video based on 3D animation created using LICO's character "Hwang-goo".

[18] Its headquarters are located in the Kumho Asiana Main Tower in Seoul, and its chief executive officer is Cho Jin-man.

[21] On 1 January 2021, Air Seoul appointed its new chief executive officer prior to Asiana Airlines acquisition,[19][22] replacing Cho Kyu-yung.