Key airport rail links
AREX Airport Express focuses on the rail connection between Seoul and Incheon International Airport. The main Express Train route links Seoul Station with Incheon Airport Terminal 1 and Incheon Airport Terminal 2, giving passengers a direct airport service from the city rail hub.
All-stop Airport Railroad trains serve additional stations on the same corridor, including Gongdeok, Hongik University, Digital Media City, Gimpo Airport, Geomam, and Unseo. These services support transfers across Seoul metropolitan rail lines and local access to the airport area. The most requested AREX Airport Express city pairs are Seoul Station to Incheon Airport Terminal 1, Seoul Station to Incheon Airport Terminal 2, and Gimpo Airport to Incheon Airport.