Phase 1 of the Airport Railroad Expressed (AREX) opened on March 23, 2007. Currently operating between Incheon International Airport and Gimpo Airport, it takes about 33 minutes by commuter train. Hotel SKY is located 5 minutes distance from Unseo subway station. Now Only Phase 1 is in operation, so you will need to transfer to Seoul Subway Line 5 at Gimpo Airport in order to go to downtown Seoul. but the Phase 2 of the AREX, which will run all the way from Incheon International Airport to Seoul Station downtown, will be completed by 29th DEC 2010.
Incheon International Airport Station of AREX is located on the first underground level of the Transportation Center at Incheon International Airport. Free electric cart service is available for passengers with heavy baggage, senior citizens, and the disabled. Service hours: 7:00~21:00 (365 days a year) Hotel SKY provides free pick-up service from Incheon Airport and also from the Unseo Subway station. Please call the Hotel 752-1101 if you would like to arrange your pick-up service from the Unseo subway station.
ICN Airport <---- Unseo station ---> Seoul Station
Seoul Station ---> (Unseo station) ---> ICN Airport