Seoul Station vs Suseo KTX (2026): Where and How to Board

Last checked: October 10, 2026 · Sources: Korail press releases and English passenger guide, SR notices, and Seoul Metro station pages, linked below.

New here? Start with our step-by-step guide to booking KTX as a foreigner with a foreign card: which site to use, how payment works and how to get your ticket.

Go to the station printed on your ticket, not the one you’d guess from the train name. Since September 1, 2026, the former SRT trains from Suseo run as KTX (renamed KTX-Sancheon), so “KTX” no longer means Seoul Station. Seoul Station and Suseo are different stations far apart, one in central Seoul and one in Gangnam. On board, there’s no special check-in: find your car and seat, and show your live mobile ticket if a train attendant asks.

Why “KTX” no longer tells you the station

Until August 31, 2026, high-speed trains from Suseo were SRT and trains from Seoul and Yongsan were KTX. On September 1, Korail took over the SRT trains and renamed them KTX-Sancheon. KTX and former SRT trains now run without route separation, so the train type tells you nothing about the station.

Korail itself warns about this: because former SRT trains are now KTX-Sancheon, you can’t tell the destination by train type alone, so check the train number and destination before you board.

All of these trains are now sold in one place, on korail.com and the Korail+ app. If you haven’t bought a ticket yet, our guide on booking KTX with a foreign card walks through it.

Which station does my train leave from?

Your ticket names the departure station. These are the three Seoul stations Korail names when it talks about high-speed trains, with what it has officially said about each since the integration:

Station	Where	Subway lines at the station	High-speed lines Korail has named
Seoul Station	Central Seoul	Line 1, Line 4, AREX (airport railroad), GTX-A	Gyeongbu, Gyeongjeon, Donghae, Honam and Jeolla lines (more trains added Sept 1); KTX-Eum to Bujeon on the Jungang line
Yongsan	Central Seoul, a separate station from Seoul Station	Not checked here — use a map app	Example fare Korail quotes: Yongsan–Gwangju Songjeong
Suseo	Gangnam-gu, south of the Han River	Line 3, Suin-Bundang line, GTX-A	Suseo-axis lines include Gyeongjeon, Jeolla and Donghae; new routes via Seodaejeon and Gupo

How busy each side is, from Korail’s integration plan (high-speed runs per day):

	Seoul side	Suseo	Total
Weekdays	270	132	402
Weekends	313	144	457

We found no official city-by-station list for the new timetable in Korail’s press releases, so the ticket is the only thing to trust. If it shows another station, that’s where you board.

Our view: when you book, look at both Seoul Station and Suseo departures for your city and pick the one closer to where you sleep. If you arrive from Incheon Airport by AREX, Seoul Station is on the same line. If you stay in Gangnam or Jamsil, Suseo usually saves you a cross-city ride. Either way, read the station name on the ticket twice.

How do I get to Seoul Station or Suseo by subway?

Seoul Station: Seoul Metro lists Line 1, Line 4, AREX and GTX-A at Seoul Station. AREX connects Incheon Airport with Seoul Station; see our Incheon Airport arrival guide for the airport side.
Suseo: Seoul Metro lists Line 3, the Suin-Bundang line and GTX-A at Suseo. SR’s station guide says Line 3 and the Suin-Bundang line connect directly: get off at Suseo and follow the transfer passage to the train station.
Yongsan: search “Yongsan Station” in Naver Map in English for the best route from your hotel.

How does boarding work?

Check the station, train number and departure time on your ticket. Korail’s own advice since the integration is to check the train number and destination before boarding.
Find the departure boards and your platform. When the platform number appears on the boards is not officially confirmed — check before you go, and ask staff if unsure. Korail added guide staff at major stations when the integration started.
Go to your car. Your ticket shows the car (coach) number and seat number. Find your car on the platform before the train arrives, so you aren’t walking the length of the train at the last minute.
Sit in your seat and keep your ticket ready. Korail’s rule is that you must have a valid ticket with you on the train. If a train attendant checks, show the ticket in the Korail+ app or on korail.com. A screenshot is not a valid ticket.
Want a different seat after you board? Korail+ lets you change your seat in the app while on the train, now on Suseo trains too.

Korail’s English guide doesn’t describe a gate step at the station; what it requires is the ticket on board. Boarding without a ticket costs the fare plus a penalty equal to the standard fare (1x).

Our view: be on the platform 10 minutes before departure. Seoul Station and Suseo are big stations, and you still have to find your car. Missing a train costs you a refund penalty, while arriving early costs nothing.

Where do I put my luggage?

Korail’s carry-on rule: each passenger can bring luggage they can carry by themselves, no more than two pieces, and it must not take up a seat or block the aisle. Where the racks are in each car is not officially confirmed — check before you go. Folding bikes must be folded, and small pets (under 10 kg) must be in a carrier.

What if I miss my train?

Your options depend on timing:

Before departure: change the ticket for free to another date within 7 days before or after, up to 30 minutes before departure (Korail’s rule since the integration). Within 30 minutes of departure the free-change rule no longer applies; refunds follow the penalty table below.
After departure: the ticket can only be refunded at a Korail station ticket office, not online, and only until the train’s arrival time at your destination. After that, there’s no refund at all.

If you bought the wrong ticket, refunding within 10 minutes of payment is free, up to 30 minutes before departure and twice a day (Korail, Oct 8, 2026).

Korail’s refund penalties on standard tickets:

When you refund	Mon–Thu	Fri–Sun and public holidays
2 months to 2 days before	Free	Minimum fee
1 day before	Free	5%
24 to 3 hours before	Free	10%
3 hours before to departure	5%	20%
Up to 20 minutes after departure	15%	30%
20 to 60 minutes after departure	40%	40%
60 minutes after departure to arrival	70%	70%

Korail applies different penalty rates during traditional holiday periods such as Chuseok and Seollal — check the rate shown at refund.

Our view: if you realize you’re at the wrong station, go straight to the ticket office there. Refunding within 20 minutes of departure costs far less than waiting, and you can then buy a new ticket for a later train on the spot.

If you get off at the wrong stop before your destination, Korail refunds the unused part of the trip at a station, minus a penalty. If you want to ride past your destination, pay the extra fare to the train attendant before you pass it.

If your train is late

Delayed trains show a turtle icon in Korail’s train search. When a delay of more than 20 minutes is Korail’s fault, you can claim compensation; for long delays it pays 50% of the fare for 60–90 minutes, 75% for 90–120 minutes and the full fare for 120 minutes or more. Korail’s English call center: +82-1599-7777 (Korail’s English site lists 08:00–20:00 Korea time on most pages and 08:00–22:00 in its FAQ, so call before 20:00 to be safe).

When tickets open for your dates: see the 2-month KTX booking window.

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