South Korea travel guide
Seoul to Busan: KTX, Slow Train or Bus
The KTX high-speed train is the way: Seoul station to Busan station in 2 hours 15–40 minutes, about 59,800 won (~A$63) in standard class. The slower ITX-Saemaeul takes about 4.5 hours for ~42,600 won. Express buses run about 4 hours from ~25,000 won. Flying rarely makes sense once airport time is counted.
The options at a glance
| KTX | 2h 15m–2h 40m · ~59,800₩ (~A$63) · Seoul stn → Busan stn |
|---|---|
| ITX-Saemaeul | ~4.5 h · ~42,600₩ (~A$45) · comfortable slow option |
| Express bus | ~4 h · from ~25,000₩ (~A$26) · to Busan Sasang terminal |
| Flight | ~1 h air time, but ~4 h door to door · rarely worth it |
The KTX in practice
Trains run every 15–30 minutes from Seoul station, most via Daejeon and Daegu. The non-stop and short-stop services do the run in about 2 hours 15 minutes. Book on the Korail app or website up to a month out; Friday evening and Sunday afternoon trains sell out, and standing tickets are the miserable fallback. First class adds about 25,000 won for a wider seat and a snack. Busan station sits right on subway line 1 — 20 minutes to Nampo-dong, about 50 to Haeundae beach with one change. See our getting around Busan guide.
Rail passes
The KR Pass (Korea Rail Pass) for foreign visitors covers unlimited KTX rides over 2, 3, 4 or 5 consecutive or flexible days. A Seoul–Busan round trip alone roughly matches the 2-day pass price, so the pass pays off if you add Gyeongju or Jeonju. Children and youth get discounts.
Slower and cheaper
The ITX-Saemaeul is the middle option — reserved seats, half the speed, 30% cheaper. The Mugunghwa is slower still and mainly for rail fans. Express buses leave Seoul’s Gyeongbu terminal every 20 minutes or so for around 25,000–35,000 won depending on comfort class; the premium buses have three-across seating and are decent for an overnight-ish ride, though there is little scenery at night anyway.
Our take
Book the KTX and spend the saving in time: two extra hours in Busan beats 20,000 won in your pocket. Busan rewards at least two nights — pair it with our Busan highlights and a day in nearby Gyeongju, 30 minutes away by train.
Keep planning South Korea
Seoul to Busan — FAQs
How long is the KTX from Seoul to Busan?
Between 2 hours 15 minutes and 2 hours 40 minutes depending on stops. Trains leave Seoul station every 15–30 minutes through the day.
How much is the KTX from Seoul to Busan?
About 59,800 won (~A$63) one way in standard class. First class is roughly 25,000 won more. The slower ITX-Saemaeul costs about 42,600 won.
Is the KR Pass worth it for Seoul to Busan?
A round trip roughly equals the 2-day pass price, so it pays off if you add more rail legs — Gyeongju, Jeonju or a Jeolla loop — within the pass days.
Last reviewed and updated: by the AmazingAsia editorial team. See our editorial policy.