Seoul to Busan KTX Guide 2026: Times, Fares and How to Book

A direct KTX service covers the roughly 325-kilometer route between Seoul Station and Busan Station in 2 hours 15 minutes, while trains making stops at Daejeon and/or Daegu along the way take 2 hours 30 to 2 hours 45 minutes instead. Standard-class fare runs around ₩54,400 one-way as of late 2026 — reduced from ₩59,800 after Korail and the former SR operator merged their high-speed services on September 1, 2026 — with first class costing more for a roomier 2+1 seat layout instead of standard's 2+2.

Both endpoint stations sit in the center of their respective cities, unlike an airport, so there's no additional transfer time to budget beyond the train journey itself.

KTX trains between Seoul and Busan run frequently, departing roughly every 20-30 minutes during peak hours, with Seoul Station services running from about 5:15am to 10:30pm. Reserved seating is standard on KTX, unlike some regional or metro-style trains — book your seat through Korail's official booking platform or a major third-party booking site, and plan to book a few days ahead for a specific popular departure time (early morning, Friday evening, holiday weekends), even though same-day tickets are often available for less popular time slots.

Arrive at the station with enough buffer for security and finding your platform, similar to any major train system, though Korean stations generally move faster through this process than airport security.

Busan Station connects directly to the local subway system, and the same T-money card used on Seoul's transit works here without needing anything separate. If you're arriving for a single focused day trip, Haeundae Beach, Gamcheon Culture Village and Jagalchi Market are all realistic within a day via the local subway and short taxi rides, though an overnight stay gives the trip more breathing room and lets you catch Busan's evening and nightlife scene properly rather than rushing for the last train back.