How to go to Seoul from Incheon international airport

Hi guys,
There are several ways to get to Seoul from Incheon airport - Railway, Bus and Taxi

1) Railway - Express train and connected with Seoul Metro

Express train leaves every 30mins to Seoul Station that it takes estimate 43mins. It costs 8000 won. If you want to get off certain train station in Seoul, you can exchange to other metro lines.
This is the link about the airport railway service in Enligsh
http://www.airport.kr/iiacms/pageWork.iia?_scode=C1203020000

2)Bus - the most convenient transportation to arrive your destination

If you have already decided accommodation, you can buy a bus ticket to arrive there. However, you need to know what is the name of area. If you stay at Hotel, you would find very easily the bus you need to take and don`t worry about your flight is late because there are night buses!
This is the link that you can find the information about bus routes and late night buses.
http://www.airport.kr/airport/traffic/bus/busList.iia?flag=E

3) Taxi - If you have a enough budget, it is the definitely best way to reach your destination. However, some taxi driver tends to go around by the side road that charge your more money. It costs around 70000won - 80000won depends on where you are