Quick answer
Use the All Stop train if you are going to Hongdae, Gongdeok or other subway-connected areas. Use the Express train mainly when you are going directly to Seoul Station.
What is AREX?
AREX means Airport Railroad. It connects Incheon Airport with Seoul through stations such as Gimpo Airport, Hongik University, Gongdeok and Seoul Station.
Express vs All Stop
| Train | Best for | Watch out |
|---|---|---|
| Express Train | Direct travel to Seoul Station | Does not stop at Hongdae or Gongdeok |
| All Stop Train | Hongdae, Gongdeok, Gimpo Airport and subway transfers | Takes longer but is more flexible |
What to do
- After customs, follow signs for Airport Railroad / AREX.
- Go down to the transportation center or basement railroad level.
- Choose Express or All Stop before buying a ticket.
- Keep your hotel station name ready in English and Korean if possible.
Common mistakes
- Taking the Express train when staying in Hongdae.
- Following taxi signs instead of Airport Railroad signs.
- Not checking the last train time for late-night arrivals.
FAQ
Is AREX good for Hongdae?
Yes, but use the All Stop train because the Express train goes directly to Seoul Station.
Can I use T-money on AREX?
T-money is generally useful for transit, but ticket rules vary by train type. Check the ticket machine or staff before boarding.
What if I miss the last train?
Use the official taxi stand or check airport bus options.