How to Book the KTX from Seoul to Busan as a Tourist

Short answer: The easiest way for a tourist to book a KTX train from Seoul to Busan is on Korail's official English website or app, a few days to a few weeks before you travel. Trains leave from Seoul Station (and some from Yongsan and Gwangmyeong) and reach Busan Station in roughly two and a half to three hours, depending on the number of stops. You can also buy at station ticket machines or counters on the day, but weekend and holiday trains sell out, so booking ahead is the smart move. If you plan several long train trips in a few days, compare the price with a Korail Pass for foreigners.

Here is how the system works, which option fits your trip, and how to get on the right train without stress.

KTX and SRT: two high-speed services

Korea has two high-speed train brands on the Seoul–Busan line, and knowing the difference saves confusion.

KTX (operated by Korail)

KTX trains depart from Seoul Station in central Seoul, with some services from Yongsan or stopping at Gwangmyeong. Seoul Station is easy to reach by subway (Lines 1 and 4) and by the AREX airport train, which makes KTX the natural choice for most visitors staying in central Seoul, Myeongdong or Hongdae.

SRT

SRT trains run on the same high-speed line to Busan but depart from Suseo Station in southeastern Seoul, near Gangnam. If your hotel is in Gangnam or Jamsil, SRT can be more convenient. SRT tickets have been sold through their own channels, and integration between the two systems has been evolving, so check where to book on each operator's official site.

Both arrive at Busan Station, which is on Busan Metro Line 1 and close to Nampo-dong, Jagalchi Market and Chinatown.

How to book a KTX ticket as a tourist

Option 1: Korail's official website or app

Korail has an English-language booking site for international visitors and an official mobile app. The general process is:

Choose your departure and arrival stations (Seoul to Busan) and date.
Pick a train by departure time. Faster trains make fewer stops.
Select standard or first class and a seat from the seat map if offered.
Pay by international credit card and save the ticket. Your ticket is usually shown on your phone or available to print; you may not need a paper ticket at all.

Booking flows and app names are updated from time to time, so start from Korail's official website and follow its current links rather than a third-party app with a similar name.

Option 2: Station ticket machines and counters

Major stations have ticket machines with an English menu and staffed ticket counters. This works well on weekdays or for flexible plans. On Friday evenings, weekends and around holidays like Chuseok and Seollal, popular departures can be fully booked, so don't rely on walking up.

Option 3: Korail Pass for foreigners

The Korail Pass (KR Pass) is sold only to foreign visitors and gives unlimited rides on Korail trains, including KTX, for a set number of days. It usually doesn't include SRT. You still need to reserve seats, which you can do online or at a station counter with your passport.

A pass only pays off if you take several long trips in a short period, for example Seoul to Busan, Busan to Gyeongju, and back to Seoul. For a single round trip, regular tickets are often cheaper. Compare the current pass price on Korail's official pass page with the fares for your planned journeys before deciding.

Choosing a train and seat

Standard or first class?

Standard seats on KTX are comfortable for a trip of under three hours, with decent legroom and power outlets on most trains. First class has wider seats in a 2+1 layout. It is a nice treat but not necessary for most travelers.

Forward or backward facing

Some KTX seats face backwards and can't be turned. If that bothers you, check the seat map when booking and pick a forward-facing seat where shown.

Luggage

There are luggage racks at the ends of carriages and overhead racks for smaller bags. Large suitcases are fine, but space fills up on busy trains, so board on time. If you're carrying a lot, a seat near the carriage end makes life easier.

Standing and unreserved tickets

When trains are full, stations sometimes sell standing or unreserved tickets. They are an option in a pinch, but standing for over two hours with luggage is not fun. Booking ahead avoids this.

On the day: getting on the right train

Arrive 20–30 minutes early at Seoul Station. It is large, and you may need time to find the KTX platforms.
Check the departure boards for your train number, which is on your ticket. Platforms are displayed shortly before departure.
There are usually no ticket gates for KTX. Just go to the platform, find your car number on the ground markings or signs, and board. Staff may check tickets on board.
Car and seat numbers are printed on your ticket. Car numbers are shown on the train door and on the platform.
Food: Stations have convenience stores, bakeries and lunch box shops. Buy snacks before boarding, as on-board options can be limited.

Changing or cancelling tickets

Korail generally allows changes and refunds, but fees depend on how close to departure you cancel, and they rise after the train has left. Check the refund rules shown when you book. If your plans may change, cancel as early as you can.

Arriving in Busan

From Busan Station, take Busan Metro Line 1 toward Nampo or Seomyeon, then transfer as needed. Haeundae Beach is reachable by subway in under an hour, or faster by taxi outside rush hour. A T-money card works on Busan's subway and buses too; see our T-money card guide. For what to do once you arrive, our 3-day Busan itinerary by subway has a ready-made plan.

Yara from POPORO CITY says: "Window seat, kimbap from the station, and a playlist for the ride. Busan arrives before the album ends."

Quick tips

Book on Korail's official site or app, ideally several days ahead for weekends.
Stay near Seoul Station? Take KTX. Staying in Gangnam? Look at SRT from Suseo.
Only buy a Korail Pass if you'll take several long trips in a few days.
Save your ticket on your phone and note the train, car and seat number.
Arrive at Seoul Station 20–30 minutes early and buy snacks before boarding.
Avoid travel days around Chuseok and Seollal, or book as early as possible.

FAQ

How long is the KTX from Seoul to Busan?

Roughly two and a half to three hours, depending on the train and the number of stops. Check the exact time for your train when booking.

Can foreigners book KTX tickets online?

Yes. Korail's official English website and app accept bookings from international visitors with an international credit card. Station machines and counters are also available.

Is the Korail Pass worth it for Seoul to Busan?

Usually not for a single round trip. It becomes worthwhile when you take several long train journeys within a few days. Compare the current pass price with individual fares first.

Do I need to print my KTX ticket?

Usually not. A ticket saved on your phone is normally accepted, and staff can check it on board. Keep your passport handy, especially with a pass.

What is the difference between KTX and SRT?

Both are high-speed trains to Busan. KTX leaves from Seoul Station and is run by Korail; SRT leaves from Suseo Station in southeastern Seoul and has had separate booking. Pick the one closer to where you're staying.