Three ways into the city, compared by price, time and how much luggage you're dragging.
Incheon Airport sits about an hour west of central Seoul. Every first-timer faces the same three-way choice on arrival. None of them is wrong โ but each suits a different traveler.
The Express train runs non-stop to Seoul Station in about 43 minutes; the All-Stop train takes closer to an hour but also stops at Hongik University โ perfect for Hongdae stays. Pay by T-money or a ticket from the machines. Choose this if your hotel is near Seoul Station, Hongdae or a Line 1/4 connection, and your bags roll well.
Slower (traffic decides), but the buses stop directly in front of many major hotels in Myeongdong, Gangnam and beyond, with big luggage space underneath and no transfers at all. Choose this if your hotel is on a bus route and you've just survived a long-haul flight โ sit down once, wake up at your hotel.
A regular taxi to central Seoul costs roughly the price of a nice dinner for two, takes about an hour off-peak, and involves zero navigation. Choose this for groups of three or four (split, it's suddenly reasonable), late-night arrivals, or hotels far from stations. Use the official taxi stands and the meter โ never a driver who approaches you inside the terminal offering a 'special price'.
Whichever you pick, buy your T-money card at the airport convenience store before you leave โ our T-money and subway starter guide makes the next step painless.