South Korea operators & stations 2026
In South Korea, most long trips are made by Korail trains, the airport by the AREX railroad, and Jeju by plane. Here are the operators, their official websites and the stations and airports we could verify on 7 October 2026.
Compare flights and airport trains on 12Go →Official websites we could verify
We only list websites that we opened and that clearly belong to the operator (checked on 7 October 2026).
| Operator | Official website | Services |
|---|---|---|
| Korail (Korea Railroad) | korail.com (site for foreigners, in English) | KTX, ITX-Saemaeul, Mugunghwa, ITX-Cheongchun trains; KORAIL PASS |
| AREX (Airport Railroad) | airportrailroad.com | Train between Seoul Station and Incheon Airport terminals |
| T-money Mobility | txbus.t-money.co.kr | Integrated booking system for intercity buses (in Korean) |
Korail's site also shows a call center number: +82-1599-7777 (08:00–20:00), and its head office address in Daejeon.
Incheon Airport: train, bus or taxi
Offers listed on 12Go for 24 October 2026, Incheon Airport → Seoul.
| Operator | Departure point (as named on 12Go) | Arrival | Fare | Duration |
|---|---|---|---|---|
| Airport Railroad Express (AREX) | Incheon Intl Airport Terminal 1 or Terminal 2 | Seoul | €7.73 | about 43 min |
| Airport Bus 6103 | Incheon Airport Terminal 1 or Terminal 2 | City Airport Terminal COEX | €11.07 | about 1 h 30 |
| Private taxi (Gounity Travel, SmartRyde) | Incheon Airport | Seoul city | €66.59–69.74 per vehicle | — |
Korail's site also promotes the City Airport Terminal at Gwangmyeong Station, presented as a quick way to reach Incheon Airport.
Airlines on the main routes
Airlines with flights listed on 12Go for 24 October 2026.
| Route | Airlines (offers that day) | Departure airport | From |
|---|---|---|---|
| Seoul → Jeju | Jeju Air (24), Eastar Jet (14), Tway Air (14), Jin Air (7), Air Busan (4) | Gimpo or Incheon | €32.13 |
| Seoul → Busan | Air Busan (10), Tway Air (3), Jeju Air (2) | Gimpo | €41.82 |
| Busan → Fukuoka (Japan) | Korean Air (14), Air Busan (10), Asiana Airlines (8), Jeju Air (6), Eastar Jet (6), Tway Air (2) | Busan airport | €106.14 |
Train types on Korail's booking site
Korail's booking site for foreigners lets you filter results by KTX (the high-speed train), ITX-Saemaeul, Mugunghwa and ITX-Cheongchun. For KTX fares and timetables, use the official site: on 24 October 2026, 12Go had no KTX on sale between Seoul and Busan, Gyeongju or Gangneung.
12Go did list a few first-class trips sold as "S Train": Seoul → Jeonju at €23.28 (about 3 h 15) and Seoul → Yeosu Expo at €33.97 (about 4 h 45).
Operators and stations: your questions
Who runs the KTX?
Which train goes from Incheon Airport to Seoul?
Which airport for flights to Jeju?
Know who you travel with
On 12Go: the AREX airport train, domestic flights and flights to Japan, with the operator and departure point for each offer.
Compare flights and airport trains on 12Go →