Last updated: 2026-06 · Fares, operating hours, and routes change often. Before you travel, it's a good idea to double-check with each airport's official site (airport.co.kr) or the operator.
"International flights leave from Incheon — but where do I catch a domestic flight?" — The point that trips foreigners up
To fly to Jeju, Busan, or Yeosu, you'll usually depart not from Incheon Airport (ICN) but from the Gimpo Airport (GMP) domestic terminal.
This is exactly where foreigners who've just landed at Incheon get tripped up most often. "I arrived at Incheon, but the Jeju flight leaves from Gimpo?" From that moment, you'll need to work out your transfer route and timing. Below, we'll walk through how to get from Gimpo Airport into central Seoul, the Incheon↔Gimpo transfer, and getting around after you arrive at Jeju Airport — along with the payment and routing issues that come with each.
0. First: Gimpo Airport has separate domestic and international terminals
Gimpo Airport (GMP) is split into a domestic terminal and an international terminal.
- Domestic terminal — exclusively for flights within Korea, such as Jeju, Busan, Yeosu, and Gwangju
- International terminal — exclusively for short-haul international routes such as Tokyo (Haneda), Osaka, Taipei, and Shanghai
The two terminals are connected by a free shuttle bus and an underground passageway (with moving walkways; about a 10-minute walk). From the B1 level of Gimpo Airport subway station, you can also use the passage that connects to the domestic and international terminals and to Lotte Mall.
Please be sure to check which terminal (domestic/international) is printed on your ticket.
1. Gimpo Airport → central Seoul: 3 options + a note
| Option | Fare | Travel time | Notes |
|---|---|---|---|
| Subway Lines 5 & 9 | About ₩1,550~ (with a transit card) | 30–50 min to the city | Cheapest, but more transfers |
| AREX (Airport Railroad) All-Stop train | About ₩1,600 (to Seoul Station) | 22–24 min to Seoul Station | Direct to Seoul Station, fast |
| Taxi | Metered (typically ₩20,000–30,000 to the city) | About 40 min (depends on traffic) | Most convenient but pricey |
If you want to save money, take the train; if you have a lot of luggage, take a bus or taxi. Just knowing this one rule of thumb covers most situations.
Subway Lines 5 & 9 / AREX (most economical)
Gimpo Airport Station is a transfer hub served by Line 5, Line 9, the Airport Railroad (AREX), the Gimpo Gold Line, and the Seohae Line. Each line boards on a different level.
- B3 level — Line 5 (toward Sangil-dong / Macheon) and Line 9 local/express (toward Junang Bohun Hospital)
- B4 level — AREX (toward Incheon Airport) and Line 9 (toward Gaehwa)
The fastest way to Seoul Station is the AREX All-Stop train, about 22–24 minutes. To Hongik University Station it's about 15 minutes by Airport Railroad. If you're heading toward Gangnam or Yeouido, the Line 9 express is handy.
Airport bus (limousine)
The dedicated limousine routes between Gimpo Airport and central Seoul (routes 6000·6021) were suspended after COVID-19 and officially discontinued in 2025. For getting into the city, the Airport Railroad (AREX) and subway Lines 5/9 are effectively the only public transit, and for Gangnam the Line 9 express is fastest. (Some limousines running to and from Incheon Airport do pass through Gimpo Airport, but routes and whether they're operating change often, so it's best to check the on-site signage.)
Taxi
Orange standard taxis wait around the clock. When traffic is clear, it's about 40 minutes to the city center. For how to call a taxi without a Korean phone number or identity verification, see the LACHA guidance below.
2. Incheon Airport (ICN) → Gimpo Airport (GMP) transfer
If you land at Incheon and need to catch a domestic flight from Gimpo, here's the usual way to do it.
| Option | Fare | Travel time |
|---|---|---|
| AREX (Airport Railroad) | About ₩4,000–5,000 | About 38–46 min (T1 about 38 min, T2 about 45 min) |
- AREX: Board the Airport Railroad at Incheon Airport Station and get off at Gimpo Airport Station. Then walk to the domestic terminal via the B1 connecting passage. With frequent service and good on-time performance, the Airport Railroad is essentially the standard for airport-to-airport transfers.
Transfer tip: When you land at Incheon and are catching a domestic flight at Gimpo, it's best to allow plenty of time in this order: collect your baggage → transfer travel (about 1 hour) → domestic check-in. Domestic flights usually require you to complete boarding procedures 30–40 minutes before departure (this varies by airline and timing).
3. What foreigners should know when paying for and boarding a domestic flight
- Booking tickets: Korean LCCs such as Jeju Air, Jin Air, and T'way support English-language sites and apps. However, when paying with an overseas card you may get stuck at the 3D Secure (overseas verification) step, so if payment doesn't go through, try a different card or a travel platform (booking agent) — this varies by card issuer and timing.
- ID check when boarding a domestic flight: Foreigners usually verify their identity with a passport (per airline guidance).
- Payment inside the airport: Convenience stores and shops at Gimpo and Jeju airports generally accept overseas credit cards. On the other hand, airport buses and some local buses often accept only cash or a transit card (T-money).
4. Getting into the city after arriving at Jeju Airport (CJU)
Once you land at Jeju Airport, here are the options for getting to the city or toward Seogwipo.
| Option | Fare | Notes |
|---|---|---|
| Limousine buses 600 & 601 | About ₩4,500 (Jungmun) – 5,500 (Seogwipo KAL Hotel) | Near Gate 5; roughly 06:00–22:20 from the airport, every about 16–40 min (since August 2024, routes 600 and 601 run alternately) |
| Regular city buses (routes 100·200·300·500, etc.) | ₩1,000~ | Cheapest; toward the city, e.g. City Hall |
| Taxi | Typically ₩20,000–30,000 to the city | Late-night surcharge after 22:00 (20–30%) |
If you're taking the route 600 limousine, it's worth paying special attention to having cash ready.
Important: The Jeju route 600·601 limousine buses often accept only cash or a transit card (T-money, Cashbee, etc.), and change may not be available (this varies by operator and timing). If you're paying cash, it's best to have the exact fare ready. You can buy and top up a T-money card at the airport convenience store.
If you'd like to know more about topping up or refunding a transit card (T-money), see the T-money Top-up & Refund Guide.
Frequently Asked Questions (FAQ)
Q1. Do flights to Jeju leave from Incheon or from Gimpo? A. Most depart from the Gimpo Airport domestic terminal. That said, starting May 12, 2026, Jeju Air began operating direct Incheon (ICN)↔Jeju (CJU) domestic flights twice weekly, so be sure to check the departure airport printed on your ticket.
Q2. How long does it take from Incheon to Gimpo? A. About 40–45 minutes by Airport Railroad (AREX) (T1 about 38 min, T2 about 45 min). Including baggage claim and domestic check-in, it's best to leave yourself at least 2 hours of buffer.
Q3. How far apart are Gimpo Airport's international and domestic terminals? A. You can move between them by free shuttle bus or the underground passageway (about a 10-minute walk). The B1-level passage at Gimpo Airport subway station also connects both terminals and Lotte Mall.
Q4. Can I ride the airport bus or a city bus with an overseas credit card? A. It depends on the route and vehicle. In particular, the Jeju route 600·601 limousines and regular local buses often accept only cash or a transit card, so it's safer to top up a transit card in advance.
Q5. I don't have a Korean phone number — can I still call a taxi at the airport? A. Yes, you can. There's a service designed so that foreigners can call and pay for a taxi right away, without a Korean bank account, phone number, or any separate identity verification (see below).
Want to handle everything from your first ride after landing in one app? Check out LACHA.
Built to work without a Korean phone number or bank account, with overseas payment methods like Alipay, WeChat Pay, and Apple Pay. Taxi hailing plus KTX, express bus, and airport railroad (AREX) booking — all in one app.
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This article organizes information as of June 2026 for general guidance purposes; flights, fares, operating hours, routes, and payment availability may vary by airline, operator, card issuer, and timing. Before you actually travel, please check the latest information on each airport's official site (airport.co.kr) and in guidance from the airlines and operators.
