How to book KTX tickets in Korea

millio · Reviewed 2026-10-04

Book KTX tickets on KORAIL’s official booking site. Use millio to plan your route and explore the destination; ticket payment, changes and cancellations are handled by your ticket seller.

Choose the route before the train

Start with the exact stations, travel date and number of passengers. For Seoul to Busan, check Seoul Station → Busan Station; compare the displayed journey time and arrival time before choosing a train.

Seoul to Busan: transport and itinerary

Open KORAIL and select your date again

A date or route selected on millio is not transferred to KORAIL. Its first screen may show today. Enter the stations and date again, then check the departure time before searching.

Open official KORAIL booking ↗

Check seats and the final price

A timetable tells you when trains are scheduled, not whether seats remain. Confirm availability, passenger details, class and the full fare on the booking page. Check its current sales window if your date is unavailable.

Single tickets or a KORAIL Pass?

Compare the total cost of the journeys you actually plan to take with the current pass price and conditions. A pass is not automatically the cheapest choice. Check eligibility, valid travel days and seat reservation rules on KORAIL.

Keep the confirmation and leave room in your day

Save your ticket and the seller’s instructions for changes or refunds. Leave time to reach the station with luggage and travel from your arrival station to your hotel. Avoid placing a long salon appointment immediately before departure.

Choose a hotel around your itinerary

Questions before you book

Can foreign visitors book KTX online?: KORAIL has an international booking site in English, Japanese and Chinese. Follow its current passenger and payment requirements when booking.
Does millio sell KTX tickets?: No. millio provides travel guidance and links to KORAIL. You buy the ticket with the ticket seller, which handles payment, changes and cancellations.
Why is the date different on KORAIL?: The date and route chosen on millio are not sent to KORAIL. Select them again on KORAIL and check the booking summary before payment.