Airport Transportation

Min's Comment : Upon arrival at Incheon international airport(the main gate of Korea), you can take Taxi, subway, and bus to get in Seoul. Domestic people use limousine bus for the transportation. It costs around 8000KRW ~ 12000KRW (= apprx 8$~12$) and runs between 6AM to 11PM.

You can take Taxi any time but it will costs 60,000KRW (=60~70$) to get in city area.
Subway is quite good transportation but not very fast for the airport transportation.

Following is the airport bus information, and you can see more information at http://www.airport.or.kr/airport/traffic/bus/busList.iia?flag=E&fake=1184459766231

But do not worry to much because you can get at airport and ask to the information center for which line will take to your destination.