Gimpo International Airport is Seoul's close-in airport, a short subway ride from the city, and was the capital's main international gateway until Incheon opened in 2001. The current schedule feed lists 16 airports in 4 countries connected to Seoul.
It kept a small but valuable set of international routes: short shuttle-style services to Tokyo Haneda, Osaka, Shanghai Hongqiao, Beijing and Taipei Songshan — in each case city-center airport to city-center airport.
The most frequently served routes for Gimpo International Airport connect to Jeju City (CJU), Busan (PUS) and Osaka (KIX).
The longest connected route for Gimpo International Airport reaches Kaohsiung City (KHH). This non-stop flight covers a distance of 1,104 miles (1,776 km).