There are three main ways to reach Seoul Station from Incheon International Airport located 70 kilometers (43 miles) west of downtown Seoul.
A’REX Airport Railroad
The A’REX Airport Railroad transports passengers from the airport to Seoul Station by express line or commuter line. The express line takes about 43 minutes nonstop. The commuter line takes 53 minutes and makes multiple stops along the way.
Airport Limousine Bus
Travel by bus to Seoul Station or other destinations across downtown Seoul in about one hour. Fares vary from 9,000 to 15,000 won depending on whether you take deluxe or standard bus.
If you are traveling in a small group or have heavy luggage, then using a taxi to get to downtown Seoul could be the best option. Generally, the fare should cost between 60,000 and 100,000 won, depending on your exact destination.