Seoul to Busan: Direct KTX, Bus or Flight?

The direct KTX high-speed train covers Seoul to Busan in as little as 2 hours 15 minutes on the fastest nonstop services, or about 2h40 on trains that call at Daejeon and Dongdaegu, Korea's signature intercity route linking the capital to the southern coast. It runs direct, Seoul Station to Busan Station, with over 69 daily departures and no change required. Express buses are cheaper, and flights are only worth it from the right airport.

Distance	About 325 km
Fastest overall	Direct nonstop KTX (about 2h15)
Frequency	Over 69 daily KTX departures
Cheapest	Direct express bus

Mode	Departures/day	First-last departure	Fastest	Typical fare	Top operators
Flight	22	06:05-20:30	1h 05m	USD 45-87	Air Busan, Jin Air, Tway Air
Prices checked July 9, 2026 from 1216 scheduled departures.

Mode	Operator	Duration	Approx fare	Overnight
Train	KTX (Korail high-speed, direct) Fastest and most comfortable, direct with no change. Nonstop departures run about 2h15; frequent services calling at Daejeon and Dongdaegu take closer to 2h40.	about 2h15 to 2h40	approx €40 to €50	No	Check on 12Go →
Bus	Express bus (Gyeongbu line, direct) Cheaper, direct with no change, with premium reclining-seat options.	about 4 to 4.5 hours	approx €20 to €30	No	Check on 12Go →
Flight	Korean Air / Jin Air / Air Busan Rarely faster than the KTX once you add transfers.	about 1h plus airport time	approx €40 to €90	No	Compare on Kiwi →

Fares are approximate and shown for comparison. Confirm live prices and times on 12Go before booking.

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How long is the KTX from Seoul to Busan?

About 2 hours 40 minutes on trains that stop at Daejeon and Dongdaegu, or as little as 2h15 on the fastest direct nonstop KTX, with several departures every hour.

Is there a direct train from Seoul to Busan?

Yes. The KTX runs direct, Seoul Station to Busan Station, with over 69 daily departures and no change required either way.

Is the train or plane better from Seoul to Busan?

The KTX usually wins on total time, since it runs city centre to city centre direct with no airport transfers or security queues.

How much is the train from Seoul to Busan?

Roughly EUR 40 to 50 for a standard KTX seat one way. Express buses are cheaper, from about EUR 20.

Do I need to book the KTX in advance?

Booking a few days ahead is wise, especially for Friday evening or Sunday afternoon departures, which sell out fastest.

Hotel options and prices come from Agoda and update at booking time; sample data shown if live pricing is unavailable. Transport fares are estimates, confirmed on 12Go.