KTX-Sancheon 121 is Korail's domestically-developed next-generation high-speed train from Seoul to Busan. Operating at up to 330 km/h on the Gyeongbu HSR line, the KTX-Sancheon has improved aerodynamics, ride quality, and reduced noise compared to the original KTX design. The name means "mountain stream."
| # | Station | Arrival | Departure |
|---|---|---|---|
| 1 | Seoul Station Seoul | Start | 06:00 |
| 2 | Dongdaegu Station Daegu | 07:38 | 07:40 |
| 3 | Busan Station Busan | 08:10 | End |
Timetable data is sourced from official South Korea railways records. Always verify with the official operator before travelling.
KTX-Sancheon 121 is Korail's domestically-developed next-generation high-speed train from Seoul to Busan. Operating at up to 330 km/h on the Gyeongbu HSR line, the KTX-Sancheon has improved aerodynamics, ride quality, and reduced noise compared to the original KTX design. The name means "mountain stream."
The train runs on every day of the week. The full route covers 3 stops with a total journey time of approximately 2h 10m.
Book KTX-Sancheon Seoul–Busan tickets at letskorail.com, the official Korail portal. Online booking opens 30 to 120 days before departure. Book in advance for the best seat selection and lowest available fares.
Passengers are advised to arrive at the station at least 30 minutes before the scheduled departure time to locate the correct platform and coach.
New to train travel? Our railway glossary explains fare classes, running days and other terms used on this page.
Book KTX-Sancheon Seoul–Busan tickets at letskorail.com, the official Korail portal. Compare fares and seat availability. Online booking typically opens 30–90 days before departure.
Book Now →Visit any Korail booking office. Staff can help with seat selection and special assistance. Book early for popular departure times.
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