Seoul Incheon International Airport (IIA) (IATA: ICN, ICAO: RKSI) is the largest airport in South Korea, and one of the largest in Asia.

Seoul International Airport is the hub for Korean Air, Asiana Airlines, and Cargo 360. The airport opened for business in early 2001, replacing the international function of the old Gimpo Airport (formerly Kimpo International Airport). Gimpo Airport now serves only domestic destinations, except flights to Haneda Airport in Tokyo.