Gimpo Airport Subway
There are three subway lines from Gimpo Airport to the city centre:
Line 5
Line 5 is the purple line.
It runs from Banghwa to Sangil-dong, stopping at Gimpo Asirport and places like Gaehwasan, Kkachisan or Yeongdeungpo.
Line 9
Line 9 is the brown line.
Runs from Gaehwa to Sinnonhyeon. Some stops are Yangcheon Hyanggyo, Deungchon, Seonyudo, Dangsan or Yeouido.
Airport Railroad Route
Airport Railraod route is the blue line.
Runs from Gimpo International Airport to Seoul City Station.
It runs back, to Incheon International Airport.
Schedule
Schedule for all lines begins daily at 05:30 am and resumes at 01:00 am.
Trains run every 4 minutes approximately.
You can check the schedule of each line on its website.
Location
To board the subway and the railroad passengers should transfer to Gimpo International Airport Station.
Fares
One-way ticket cost is 1,250 KRW.
Fares are metered according to distance.