High-speed train operations were integrated on 1 September 2026. According to SR's official notice, travel from that date on trains to or from Suseo can be booked via Korail+ or Korail's website. Old SRT tickets were sold only for services operating by 31 August; later Suseo services use the integrated KTX ticketing system. Korail-only customers did not need to convert accounts, while SR-only or dual-account members were asked to complete unified membership migration to preserve benefits. Non-member bookings remain possible but member benefits may be limited. Confirm whether your departure station is Suseo or Seoul and verify live schedules, prices, seats and refund terms at booking.