Korean Air
Korea’s largest airline, with many domestic routes.
Update: Asiana Airlines is due to be merged into Korean Air in December 2026.
Visit official website →
Domestic flights
Most domestic flights go to and from Jeju Island. Flying is also handy between Seoul and Busan if you find a cheap fare.
- Korea’s airlines are going through mergers, so names and websites may change. Always book on the airline’s current official site.
Domestic flights: companies and official sites
Asiana Airlines
Full-service airline with domestic routes.
Update: Due to be merged into Korean Air in December 2026; the Asiana brand is set to be retired.
Visit official website →Jin Air
Low-cost airline in the Korean Air group.
Update: Air Busan and Air Seoul are planned to merge into Jin Air in 2027.
Visit official website →Trinity Airways (formerly t’way Air)
Low-cost airline flying domestic routes including Jeju. Renamed from t’way Air in September 2026.
Visit official website →Air Busan
Low-cost airline based in Busan.
Update: Planned to merge into Jin Air in 2027.
Visit official website →Air Seoul
Low-cost airline in the Asiana group.
Update: Planned to merge into Jin Air in 2027.
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