KTX and KORAIL Pass Guide for Foreigners
Korea’s high-speed rail network is one of the fastest and most comfortable ways to travel the peninsula. KTX trains connect Seoul to Busan in around 2 hours 15 minutes, Seoul to Gyeongju in 2 hours, and Seoul to Gwangju in 1 hour 40 minutes. For foreign visitors, the main friction is at the booking stage - the official Korail website has a reputation for rejecting overseas cards.
How to Book KTX Tickets
Option 1: Korail website and app
The official booking channel is the Korail website or the Korail Talk app. These offer the widest seat selection and the ability to choose seat numbers. The app accepts some international Visa and Mastercard cards, though failures are common. If your card is declined, try a different browser or card before giving up.
Option 2: Third-party platforms
Trazy (trazy.com) sells KTX tickets to international travellers and reliably accepts foreign cards. Prices match official rates. The trade-off is a slightly smaller seat selection and limited ability to choose specific carriage positions. For most journeys, this is the most friction-free approach.
Option 3: Station ticket counters
Every major train station in Korea has staffed counters that sell KTX tickets. Staff at Seoul Station, Suseo, and major regional stations generally have some English ability. You can pay by cash or card. Counters open from around 05:30 until the last service.
Option 4: Automated ticket machines
Station ticket machines have an English-language mode and accept most international Visa/Mastercard cards. Select “Overseas Credit Card” when prompted. Machines are faster than counters for straightforward journeys.
KTX vs SRT: Which to Take?
Both services offer similar journey times on overlapping routes, but they depart from different Seoul stations and are operated by different companies.
| Factor | KTX | SRT |
|---|---|---|
| Operator | Korail | SR |
| Seoul departure | Seoul Station / Yongsan | Suseo Station |
| Seoul–Busan | ~2h 15m | ~2h 10m |
| Price (standard) | From KRW 59,800 as of 2026 | From KRW 52,600 as of 2026 |
| KORAIL Pass valid | Yes | No |
| Booking | Korail website/app | SRT app or srail.kr |
Suseo Station is in the Gangnam area and accessible by metro line 3 (Yangjae-citizen’s forest station). If you are staying south of the Han River, SRT is more convenient; if staying in central or northern Seoul, KTX from Seoul Station is easier.
Is the KORAIL Pass Worth It?
The KORAIL Pass is marketed specifically at foreign visitors and allows unlimited KTX travel on selected days within a validity window. As of 2026, options include:
- 2-day flexible pass: approximately USD 75
- 3-day flexible pass: approximately USD 105
- 5-day consecutive pass: approximately USD 150
“Flexible” means you can use the pass on any 2 or 3 days within a 10-day window. “Consecutive” means calendar days back-to-back.
The break-even point is around three long-distance journeys. A Seoul–Busan return alone costs approximately USD 90–100 at standard rates. If your itinerary includes multiple long-distance routes - say, Seoul to Busan, Busan to Gyeongju, and Gyeongju back to Seoul - the 3-day pass saves money and removes the need to book individual tickets.
The pass does not cover SRT trains, first-class (KTX-Sancheon premium seats), or some scenic tourist trains. Seat reservations are required even with a pass, and are free to make at station counters.
Buy the KORAIL Pass online through the Korail website before departure - it cannot currently be purchased inside Korea.
Key Routes and Journey Times
| Route | Journey Time | Standard Fare (as of 2026) |
|---|---|---|
| Seoul → Busan | ~2h 15m | KRW 59,800 |
| Seoul → Gyeongju | ~2h | KRW 46,800 |
| Seoul → Yeosu Expo | ~2h 45m | KRW 52,300 |
| Seoul → Gwangju Songjeong | ~1h 40m | KRW 44,800 |
| Seoul → Jeonju (general train) | ~2h | KRW 18,200 |
| Busan → Gyeongju | ~23m | KRW 10,600 |
Note: Jeonju is not served by KTX - slower ITX or Mugunghwa trains run this route, which are not covered by the KORAIL Pass.
Practical Tips for the Journey
Boarding: Arrive at the platform at least 10 minutes before departure. KTX doors close promptly. Your carriage and seat number are printed on the ticket - follow the overhead signs and floor markings to find the right carriage.
Luggage: Large luggage racks are at the ends of each carriage. Small bags go in the overhead rack above your seat.
Convenience items: Every KTX station has CU or GS25 convenience stores on the concourse. The onboard trolley service sells drinks and snacks; prices are higher than convenience stores.
Platform confirmation: At major stations, check the departure board shortly before travel - KTX trains occasionally depart from different platforms than the one printed on tickets.
For planning your rail journey around the country, the guide to South Korea itinerary planning and the T-money card and Seoul transport guide have complementary information on getting around within cities.
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Frequently Asked Questions
- Can foreigners book KTX trains online?
- Yes, but foreign credit cards frequently fail on the official Korail website. The most reliable methods for foreigners are booking via the Korail Talk app (which accepts some international cards), purchasing at station ticket counters, or using third-party platforms such as Trazy (trazy.com), which accept major international cards without issues.
- Is the KORAIL Pass worth buying?
- The KORAIL Pass becomes cost-effective if you plan at least three long-distance journeys - for example, Seoul–Busan, Seoul–Gyeongju, and Seoul–Yeosu. A 3-day flexible pass costs approximately USD 105 (as of 2026). Two return Seoul–Busan journeys at standard rates would cost around USD 90–100, making the pass worthwhile from the third journey onwards. For two or fewer intercity trips, purchasing individual tickets is cheaper.
- What is the difference between KTX and SRT?
- KTX (Korea Train eXpress) is the primary high-speed rail network operated by Korail, departing mainly from Seoul Station and Yongsan Station. SRT (Super Rapid Train) is a competing high-speed service operated by SR, departing from Suseo Station in southern Seoul. SRT tickets are generally 10–15% cheaper than equivalent KTX tickets. The KORAIL Pass covers KTX but not SRT. For travel purely between Seoul and Busan or Daegu, SRT is often the better-value option if you book in advance.
- How far in advance should I book KTX?
- For weekday travel, booking one to three days in advance is usually sufficient. For weekends, national holidays (Chuseok, Seollal), and travel during the summer holiday period (late July to mid-August), book at least two to three weeks ahead. KTX trains sell out on peak travel days.