How to Book KTX Train Tickets in Korea: KORAIL, SRT, Korail Pass, and Foreigner Tips

Korea's high-speed trains make day trips and multi-city routes genuinely easy, Seoul to Busan in about two and a half hours.

Booking them got simpler on 1 September 2026. KORAIL and SR, which ran KTX and SRT as two separate companies with two separate apps, completed their combination.

One app now books every high-speed train, including the Suseo departures that used to be SRT.

If you are working from a guide written before September, the part to update is that the separate SRT app is no longer a booking channel.

Fares, timetables, and app menus change, so treat specifics here as orientation and confirm on the official channels when you book. Sort out payment first with how to pay in Korea, and see the Korea transportation guide for the bigger getting-around picture.

Quick answer

Fares, timetables, booking-open dates, and app screen names can all change. Check the official timetable and menus before you rely on them, and book early around holidays.

What changed on 1 September 2026

Korail+ replaced KorailTalk on 3 August 2026, as an update or a fresh install, and it shows Seoul-departing and Suseo-departing trains in one search.

The separate SRT app and SR website stopped being a way to book. Trains departing from 1 September are sold in Korail+, on the KORAIL site, or at a station.

A KORAIL account converted automatically. An SR-only account needs a fresh registration, and anyone who held both completes a conversion step.

• ITX and Mugunghwa: KORAIL's slower, cheaper conventional trains. Useful for shorter or scenic trips; book them the same way as KTX.

Korea Tourism Organization — Photo Korea

What the fare cut is, and is not

Since integrated operation began, KTX-line high-speed fares have been cut about 10% to match the former SRT fares, held for three years as a condition of the approval. The government briefing states the cut as an average to SRT parity; it does not publish a single Seoul to Busan price, so check the fare for your train rather than reverse-engineering a number.

Read that carefully before budgeting:

• It was a cut on the KTX side down to SRT's price, not an average across both. If you were already riding the Suseo services, your fare was the benchmark and did not fall.
• The commitment is worded around SRT fare parity, so whether it reaches routes SRT never served, such as Gangneung or the Jungang line, is not something the announcement settles. Check the fare for your own route rather than assuming a 10% cut everywhere.

Capacity rose at the same time: roughly 15,000 more seats on a weekday and up to 17,000 more on a weekend, with the Suseo-side supply up about 30%. Mileage now accrues at 5% on the former SRT routes, as it already did on KTX.

Which Seoul station? (pick this first)

The single most useful habit is to choose the station before the train, based on where you're staying:

• Seoul Station: Subway Lines 1 and 4 and the AREX airport line; convenient for Myeongdong, Jongno, and the Hongdae side. KTX to Busan, Daegu, and many destinations.
• Yongsan Station: Line 1; many departures toward Jeonju, Yeosu, Mokpo, and Gwangju.
• Cheongnyangni Station: the eastern gateway; KTX toward Gangneung and Donghae.
• Suseo Station: Line 3 (Gangnam/Songpa/Jamsil side) and the Bundang line; the former SRT station. If you're staying around Jamsil/Songpa or Gangnam, a Suseo departure can be the closer option.

A train that leaves from the wrong side of the city can add an hour to your day, so match the station to your base, not just the destination.

How to book KTX online

KTX is generally the easiest high-speed option for foreign visitors to book:

1. Use the Korail+ app or the English KORAIL site. (The app tends to handle overseas cards more smoothly than the website.)
2. Search your route, date, and time, and pick a train and seat.
3. At payment, choose the option for a card issued overseas when prompted, and pay.

Screen names and menu paths can change, so follow the current in-app labels rather than a fixed script, and double-check the departure station shown on your booking.

Foreign-card tips. If a card is declined, it's usually not you. Try these before giving up:

• Try the app instead of the website (or vice versa), or a different browser.
• Try a different card (a Visa/Mastercard credit card often works best).
• Register a foreign card to Apple Pay at a KORAIL station, where supported, see how to pay in Korea.
• Buy at a station ticket counter or machine if online payment won't go through.
• Stay flexible on times: if one train won't process, another departure may.

There's no card that "always works," so build in a little buffer rather than counting on a single method.

How to book the Suseo departures (formerly SRT)

These sit in Korail+ with everything else now, so there is no second app or account to set up. They still leave from Suseo, which suits anyone based on the Gangnam/Songpa side of Seoul.

That removed the obstacle visitors used to hit here. SR's own booking involved identity verification that assumed a Korean phone number, which shut out many foreigners without one.

If a guide still tells you to install the SRT app, it predates the integration.

Is the Korail Pass worth it?

The Korail Pass gives unlimited rides over a set number of days on KORAIL trains: KTX, ITX, and Mugunghwa. Whether it pays off depends on how much you'll actually ride:

• Worth considering if you're doing several long KORAIL trips in a short window (for example a multi-city loop in a few days).
• Probably not worth it if you're only doing one round trip, individual tickets are often cheaper.

A few essentials:

• You still need a seat reservation for each trip; the pass isn't a walk-on ticket.
• It's aimed at foreign passport holders: check the current eligibility and pricing on the official Korail Pass page.

For the full break-even math and when it does (and doesn't) save money, see the Korail Pass guide for foreigners.

The Korail Pass and the former SRT trains: do not assume either way. The pass has historically covered KORAIL trains only, and riding SRT on it was treated as fare evasion with a heavy penalty. SR is no longer a separate operator, but the approval announcement says nothing about the Korail Pass, and KORAIL has not published updated pass terms. Confirm what your pass covers with KORAIL before you board a former SRT service. Until you have that in writing, ride the services that were always KTX.

Popular routes

Departure stations vary by route and by individual train, so always confirm on the official timetable.

For Busan trips, pair this with the Busan guide and where to stay in Busan; for a longer loop, the Korea 7-day itinerary strings several of these together. For the two most popular historic-town routes, see Seoul to Gyeongju and Seoul to Jeonju by train.

Korea Tourism Organization — Photo Korea

Seat types

High-speed trains generally offer a standard (economy) class and a roomier first class, plus reserved versus standing/non-reserved options when seats sell out. For most visitors, a reserved standard seat is all you need; reserve early on busy routes so you're not left standing.

When to book

• Everyday travel: you can often book a day or two ahead, or even same-day off-peak.
• Weekends and peak season: reserve earlier, because popular departures fill up.
• Major holidays (especially Seollal/Lunar New Year and Chuseok): trains can sell out very early, and booking opens on set dates. If your trip overlaps a holiday, plan well ahead and check when reservations open.

If your train is sold out

• Check nearby departure times, or the other station (if the Seoul Station trains are full, a Suseo departure may have space).
• Consider a standing/non-reserved ticket for shorter hops.
• Look at ITX or Mugunghwa conventional trains, or intercity buses, as alternatives.
• Use only official channels (Korail+, the KORAIL site, and station counters). Avoid unofficial resellers or ticket touts: they're unnecessary and risky.

On travel day: a quick checklist

• Go to the right station: re-check whether it's Seoul, Yongsan, Cheongnyangni, or Suseo.
• Arrive with time to find your platform; high-speed trains leave promptly.
• Have your ticket in the official app (or printed); you generally don't need to tap through gates, but staff may check onboard.
• Board the correct cars on your ticket. Some services run coupled, so a Korail Pass holder should follow current KORAIL rules for which cars count as covered.
• Keep your bag with you and mind the quiet, orderly carriage etiquette.

Common mistakes

• Going to the wrong station: the classic error; Suseo (SRT) and Seoul Station (KTX) are not interchangeable.
• Assuming you know what a Korail Pass covers now: the post-integration terms have not been published. Check before you ride a former SRT service.
• Forgetting Gyeongju Station sits outside the center (the high-speed stop was named Singyeongju until 28 December 2023). Plan the onward transfer.
• Leaving holiday travel to the last minute: Seollal and Chuseok trains sell out early.
• Giving up when a foreign card is declined: try another method or the station counter.
• Hunting for the SRT app: it stopped being a booking channel, and Korail+ covers Suseo too.

Frequently asked questions

What's the difference between KTX and SRT?

There is no longer an operational difference. Until 31 August 2026 they were two operators, KTX by KORAIL from Seoul Station and Yongsan and SRT by SR from Suseo, with separate apps and tickets.

Since 1 September 2026 one operator runs both, booked in one app. The stations stay where they are, so the station question outlived the merger.

Which is easier for foreigners to book, KTX or SRT?

The question no longer splits: both are booked in Korail+ (the app that replaced KorailTalk) or on the KORAIL site, with the "issued overseas" card option. SR's own booking used to require identity verification that was harder without a Korean phone number, which is why the integration helped visitors most.

Can I use a Korail Pass on the former SRT trains?

Historically no, and using it that way was treated as fare evasion with a heavy penalty.

What applies after the integration is not published. The approval announcement does not mention the pass, so check with KORAIL rather than assuming the merger changed it.

How do I book a KTX ticket online?

Use the Korail+ app or the KORAIL site: search your route and time, pick a seat, and pay, choosing the overseas-card option at checkout. Or buy at a station counter or machine.

My foreign card was declined: what can I do?

Try the app instead of the website (or a different browser), a different card, Apple Pay registered at a KORAIL station, or simply buy at the station counter. Staying flexible on times helps too.

Which Seoul station do high-speed trains leave from?

KTX mainly from Seoul Station and Yongsan (some from Cheongnyangni); SRT from Suseo. Pick the station that's convenient to where you're staying.

Is the Korail Pass worth it?

It can be if you're taking several long KORAIL trips in a few days; for a single round trip, separate tickets are often cheaper. You still need a seat reservation for each ride.

Do I need to reserve a seat with a Korail Pass?

Yes, the pass gives you rides, but you still book a seat reservation for each journey.

How far in advance should I book?

For normal travel, a day or two is often fine; for weekends, peak season, and especially Seollal and Chuseok holidays, book as early as you can, those sell out fast.

How long is Seoul to Busan by train?

About two and a half hours by KTX, depending on the service and stops.

Are KTX and SRT prices the same?

They were broadly similar, with SRT slightly cheaper on the shared routes. KTX-line fares were cut about 10% to the former SRT level on 1 September 2026, so on those corridors they converged.

Check the fare for your own route rather than assuming the cut applied everywhere.

Can I just buy a ticket at the station?

Yes. Station counters and machines are a reliable fallback, especially if online card payment won't go through, though busy departures may already be sold out.

Is there a train straight to central Gyeongju?

Not quite: high-speed trains serve Gyeongju Station (renamed from Singyeongju on 28 December 2023), outside the city, so plan a short bus or taxi transfer into the center. See Seoul to Gyeongju by train for transfer details.

How do I get to Gangneung by train?

By KTX on the Gangneung line from Cheongnyangni Station. There's no SRT to Gangneung.

What happens with coupled trains?

Some services run coupled, joining sets that used to belong to different operators. Always check your booking's departure station and train, stay in the cars your ticket covers, and Korail Pass holders should follow current KORAIL rules on which cars count.

Do I need to print my ticket?

Usually no: a ticket in the official app is fine, and there are typically no entry gates, but keep it handy for onboard checks.

Is the train better than flying or the bus?

For most Seoul-Busan-type trips, the high-speed train is fast, central, and frequent. Buses are cheaper and reach places trains don't; flying rarely saves time once you add airport transfers.

Are trains accessible with luggage and strollers?

Yes. There's overhead and end-of-car luggage space.

Travel light in peak times, and reserve seats so your group sits together.

Can I change or refund a ticket?

Generally yes, through the same app or site you booked with, subject to time limits and possible fees. Check the current rules when you book.

Final recommendation

Book Korea's high-speed trains with one principle in mind: the station matters as much as the train. Decide whether Seoul Station, Yongsan, Cheongnyangni, or Suseo fits where you're staying, book in Korail+ or on the KORAIL site with the overseas-card option, and keep a fallback (a different card, Apple Pay, or the station counter) ready. If you're riding a lot in a few days, price out a Korail Pass, and confirm with KORAIL what it covers on the former SRT trains.

Confirm fares, times, and departure stations on the official channels, plan around the holidays, and the rest is just enjoying a fast, comfortable ride. The biggest mistake travelers make isn't catching the wrong train. It's going to the wrong station.

Last verified on October 11, 2026

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