Korea Trip Planner

Seoul to Jeju: fly, or take the train and ferry?

Fly. Gimpo to Jeju is the world’s busiest air route, with about 14.4 million seats in 2025, and the flight is scheduled at about 1 hour 15 minutes. Fares change daily by airline and date. The slow alternative is the KTX to Mokpo plus a ferry of about four and a half hours.

Flight, or train plus ferry: side by side

Seoul to Jeju by flight and by KTX plus ferry: travel time and one-way fare
OptionTimeOne-way fare
FlightGimpo Airport → Jeju AirportSome flights are listed at 1 h 20 min to 1 h 30 min. These are the scheduled flight times on the booking pages, so add the airport transfer and check-in.about 1 h 15 minabout $21–$105 (₩28,000–₩140,000)Seen on Oct 4, 2026 for October 7–21 departures
KTX train plus ferryYongsan Station → Mokpo by KTX, then Mokpo → Jeju by ferryFrom Seoul Station the KTX takes about 2 h 41 min–2 h 50 min.Train about 2 h 22 min–2 h 37 minFerry about 4 h 30 minTrain about $35–$36 (₩47,300–₩47,600)Ferry fare not checked

Checked Oct 4, 2026 · USD at the Nov 13, 2026 rate. Fares change daily; low-cost airlines are usually cheapest outside weekends and holidays. The booking screens did not say whether the fares include taxes and the fuel surcharge. Our planner budgets about $60 (₩80,000) per person one way for this flight as a planning value inside the range we saw, not a fare quote.

Customize this plan

Opens the planner with Seoul and Jeju. Change the days or the style there.

Gimpo or Incheon?

Gimpo Airport, in western Seoul, is the Seoul end of the busiest air route in the world, so it is the airport to look at first. Check the airline’s schedule if you would rather fly from Incheon.

Landing at Incheon first? The AREX all-stop train from Incheon Airport also stops at Gimpo Airport. The Incheon Airport to Seoul guide has the train times and fares.

Korean names and addresses of Gimpo and Jeju airports
AirportKorean nameAddress
Gimpo International Airport김포국제공항서울특별시 강서구 하늘길 111
Jeju International Airport제주국제공항제주특별자치도 제주시 공항로 2

Checked Oct 4, 2026. Show the address to a taxi driver or paste it into a map app.

After you land at Jeju Airport

City and intercity buses
Board at Gate 2. On the trunk and branch lines a ride costs about ₩1,150 with a transit card or ₩1,200 in cash.
Airport limousine bus 600
Board at Gate 5 on the ground floor. Fares run from about ₩1,300 to ₩5,500 by distance. Route 800 costs about ₩1,300–5,000.
Rental car
Walk out of Gate 5 and follow the signs to the rental car house; your company’s shuttle leaves from there. The rental car house is near Gates 3 and 5.

Checked Oct 4, 2026. A T-money card works on Jeju buses; see T-money and getting around Korea. On the island itself, the Jeju guide covers where to go.

Bags and the fuel surcharge

Korean Air
Economy includes 20 kg of checked baggage on Korean Air flights (30 kg in Prestige class).
Low-cost airlines
Baggage rules differ by airline and fare, so check your ticket before you pack.
Fuel surcharge
A fuel surcharge that changes every month is part of domestic fares, so check the final price at checkout.

Checked Oct 4, 2026. The planner’s 10-day itinerary and the Korea travel budget show what a Jeju stay adds. Going in winter? See Korea in winter. Heading to Busan instead? See Seoul to Busan.

Sources

Before you go

Travel insurance

Check that your policy covers medical care in Korea, trip changes and the activities you plan.

eSIM or SIM card

Mobile data keeps maps, translation and transit apps working. For an eSIM, check that your phone supports it and is unlocked.

The full checklist (K-ETA, T-money, airport transfers) comes with every trip you build in the planner.

Questions

How long is the flight from Seoul to Jeju?

Gimpo to Jeju is scheduled at about 1 h 15 min on most flights. Some flights are listed at 1 h 20 min to 1 h 30 min on the Jeju Air and Korean Air booking pages. Add the airport transfer and check-in. Checked Oct 4, 2026.

Is there a ferry from Seoul to Jeju?

Not from Seoul itself. The ferry we checked sails from Mokpo, in the south-west. Take the KTX from Yongsan, about 2 h 22 min–2 h 37 min on the trains we checked, then the Seaworld Express Ferry for about 4 h 30 min. Flying is far quicker. Checked Oct 4, 2026.

How much is a flight from Seoul to Jeju?

Fares change daily; low-cost airlines are usually cheapest outside weekends and holidays. On Oct 4, 2026 we saw one-way fares from about $21 (₩28,000) to about $105 (₩140,000) for October 7–21 departures.

Plans and guides