Seoul Station to Gimpo Airport: 18-30 min by Train or Bus
The trip from Seoul Station (서울역) to Gimpo Airport (김포공항) takes 18 minutes on the Airport Railroad Express (AREX) direct train, or 25-30 minutes on Seoul subway Line 5 or Line 9 with no transfers. Both routes are reliable, clearly signposted in English, and cost significantly less than a taxi. Your choice depends on how much luggage you have, whether you already own a T-money card, and how much you value speed over saving a few thousand won. After reading this guide, you will know which service to take, where to board, what the journey costs, and what to do if your flight departs early in the morning or late at night.
- Fastest option
- AREX express train, 18 minutes non-stop, runs every 20-40 minutes depending on time of day
- Cheapest option
- Seoul subway Line 5 or Line 9, roughly 25-30 minutes, base fare 1,550 KRW with T-money card
- Operating hours
- AREX all-stop and subway lines run approximately 5:30 AM to midnight; confirm late/early schedules on the day
- Transfers required
- Zero transfers on all three options: AREX express, AREX all-stop, Line 5, or Line 9
- Luggage space
- AREX trains have dedicated luggage racks; subway cars have floor space but can be crowded at peak hours
- Navigation apps
- Use Naver Map or KakaoMap for live schedules; Google Maps transit works but lacks walking directions
- AREX express train: the fastest door-to-door option
- AREX all-stop train and Seoul subway: the budget alternatives
- Which option to choose based on your situation
- Step-by-step instructions from Seoul Station to Gimpo Airport
- Fares, payment methods and where to buy tickets
- Early morning, late night and alternative transport options
- Navigating Seoul Station and connecting from other parts of Seoul
- Comparison of transport options from Seoul Station to Gimpo Airport
- Practical tips
- Frequently asked questions
AREX express train: the fastest door-to-door option
The Airport Railroad Express (AREX, 공항철도) express service is a premium non-stop train that runs directly from Seoul Station to Gimpo Airport in 18 minutes. Trains depart every 20 minutes during the day and every 30-40 minutes early in the morning and late at night. The express train uses a separate platform from the all-stop AREX service and the regular subway, so follow signs for 'AREX Express' or look for the orange express train logo. The fare is roughly 5,000-6,500 KRW one way depending on whether you book online in advance or buy at the station; check the official AREX website or ticket machines for the current price. You can buy tickets from staffed counters, automated machines that accept cards and cash, or through the AREX mobile app if you have a Korean payment method. The express train has wide seats, overhead luggage racks, and floor space for suitcases, making it the most comfortable option if you are travelling with checked baggage. Trains are air-conditioned, quiet, and rarely crowded except during major holiday periods. If you miss one departure, the next train is never more than 40 minutes away. The express service does not accept T-money cards; you must buy a separate ticket. At Seoul Station, the AREX express platform is on the basement level B1 or B2 depending on which entrance you use; follow the bilingual signs toward 'Airport Railroad' and then look for the express train gates. At Gimpo Airport, the AREX platform is in the basement of the terminal building, a short walk or escalator ride from check-in counters.
AREX all-stop train and Seoul subway: the budget alternatives
If you want to save money and do not mind an extra 7-12 minutes of travel time, you can take the AREX all-stop train or Seoul subway Line 5 or Line 9, all of which connect Seoul Station to Gimpo Airport with no transfers. The AREX all-stop service runs on the same tracks as the express but stops at every station between Seoul Station and Gimpo Airport, taking roughly 26-28 minutes. The fare is much lower than the express, typically in the range of 1,550-2,000 KRW depending on the exact distance, and you can pay with a T-money card or single-journey ticket. Seoul subway Line 5 (purple line) also runs from Seoul Station to Gimpo Airport and takes about 28-30 minutes with five stops in between, including Yeouido (여의도) and Mapo (마포). Line 9 (gold line) connects Seoul Station to Gimpo Airport in roughly 25 minutes with fewer intermediate stops, making it the fastest subway option. Both subway lines and the AREX all-stop service accept T-money cards, so if you already have a loaded card for getting around Seoul, you do not need to buy a separate ticket. Single-journey tickets cost 1,650 KRW for the base fare and can be purchased from vending machines at every station; the machines have English menus and accept cash and cards. If you are carrying large suitcases, be aware that subway cars do not have luggage racks and can be extremely crowded during morning rush hour (roughly 7:30-9:00 AM) and evening rush hour (roughly 6:00-8:00 PM). Outside peak hours, there is usually enough floor space near the doors for one or two suitcases per car. All three services—AREX all-stop, Line 5, and Line 9—run from approximately 5:30 AM until just after midnight; exact first and last train times vary by day of the week and are posted on the official Seoul Metro website and in the Naver Map and KakaoMap apps.
Which option to choose based on your situation
Choose the AREX express if you have a tight connection, are travelling with heavy luggage, or simply prefer a guaranteed seat and a quieter ride. The express train is worth the extra cost if your flight departs within two hours of your planned departure from Seoul Station, because it eliminates the risk of delays caused by crowded subway platforms or waiting for doors to close at every stop. The express is also the better choice late at night or very early in the morning, when subway and all-stop trains run less frequently and you do not want to risk missing the last service. Choose the AREX all-stop train or a subway line if you are on a budget, already have a T-money card loaded with credit, and are travelling outside rush hour with only a backpack or small carry-on bag. The all-stop AREX and subway options are perfectly reliable and comfortable as long as you are not in a hurry and do not mind standing if the train is crowded. Line 9 is the fastest subway option and stops at useful transfer points such as Noryangjin (노량진) and Yeouido, so it is a good choice if you are coming from southern or western Seoul neighborhoods. Line 5 is the best option if you are starting from eastern Seoul areas such as Gwanghwamun (광화문) or Dongdaemun (동대문), because it runs through the city center and connects to multiple transfer points. If you are unfamiliar with Seoul and worried about navigating the subway, the AREX express is the simplest option because it uses dedicated platforms and you cannot accidentally board the wrong train. For return trips from Gimpo Airport to Seoul Station, the same logic applies: the express saves time, the all-stop and subway options save money.
Step-by-step instructions from Seoul Station to Gimpo Airport
If you are taking the AREX express, enter Seoul Station through any of the main entrances and follow signs for 'Airport Railroad' or 'AREX.' The signs are in English and Korean and include airplane icons. Take the escalator or elevator down to the basement level where the AREX platforms are located. You will pass through a ticket gate; if you have not already bought a ticket, stop at the ticket counter or vending machine before the gate. The express train platform is clearly marked and separated from the all-stop platform; look for orange express train branding and departure boards showing the next express train time. Board the train, stow your luggage in the racks or at your feet, and stay on until the train reaches Gimpo Airport, which is the final stop. The journey takes 18 minutes and there are no intermediate stops, so you cannot miss your destination. At Gimpo Airport, follow signs for 'Terminal' or 'Check-in' and take the escalator or elevator up to the departure level. If you are taking the AREX all-stop train or a subway line, enter Seoul Station and follow signs for the subway or 'Airport Railroad All-Stop.' If you are using Line 5, follow signs for Line 5 (purple) toward Banghwa (방화) or Gimpo Airport; if you are using Line 9, follow signs for Line 9 (gold) toward Gaehwa (개화) direction. Check the digital departure board on the platform to confirm that the next train stops at Gimpo Airport; not every Line 9 train goes all the way to the airport, so verify the destination before boarding. Tap your T-money card at the ticket gate or insert a single-journey ticket. Board the train and stay on until you hear the announcement for Gimpo Airport (김포공항). Exit the train, tap your T-money card or insert your ticket at the exit gate, and follow airport terminal signs. The subway and AREX all-stop platforms at Gimpo Airport are in the same basement area as the express platform, so the walk to check-in is identical regardless of which service you took.
Fares, payment methods and where to buy tickets
The AREX express train fare is roughly 5,000-6,500 KRW for a one-way ticket from Seoul Station to Gimpo Airport as of 2026; the exact price changes depending on promotional periods and whether you book through the AREX app or website, so check the official AREX site or ticket machines on the day of travel. You can buy express tickets at the AREX ticket counter staffed by English-speaking agents, at automated ticket machines that accept credit cards and cash, or through the AREX mobile app if you have a Korean phone number and payment method. Express tickets are not available as T-money transactions; you must buy a separate ticket. The AREX all-stop train and Seoul subway lines charge the standard Seoul subway base fare of 1,550 KRW with a T-money card or 1,650 KRW for a single-journey ticket for the first 10 kilometres, plus a small distance surcharge for journeys longer than 10 kilometres. The trip from Seoul Station to Gimpo Airport is roughly 18 kilometres, so expect the total fare to be around 1,550-2,000 KRW with a T-money card. A T-money card (티머니) costs roughly 2,500-4,000 KRW to purchase at convenience stores such as CU, GS25, or 7-Eleven, or from vending machines at subway stations. You load credit onto the card at the same convenience stores or at 'add value' machines in subway stations, which have English menus. The card itself is not refundable, but you can refund the remaining balance at staffed ticket offices if you are leaving Korea and no longer need the card. Single-journey tickets are paper tickets sold from vending machines at every subway station; the machines have touch-screen English menus and accept coins, bills, and credit cards. You select your destination on the screen, pay the fare, and receive a small plastic token that you tap at the entry gate and insert at the exit gate. If you plan to use Seoul buses or visit other Korean cities during your trip, a T-money card is much more convenient than buying single tickets every time.
Early morning, late night and alternative transport options
The AREX express and all-stop trains, along with subway Lines 5 and 9, typically start service around 5:30 AM and run until just after midnight, but exact first and last train times vary by day and are subject to change. If your flight departs before 7:00 AM or after 11:00 PM, check the exact schedule on the day before you travel using the Naver Map app, the KakaoMap app, or the official Seoul Metro website. The AREX website also publishes express train schedules. If you miss the last train or arrive at Seoul Station after midnight, your options are a taxi, a late-night airport limousine bus, or waiting until the first train in the morning. Taxis from Seoul Station to Gimpo Airport cost roughly 20,000-30,000 KRW depending on traffic and time of day, and the drive takes 20-30 minutes in light traffic or up to 50 minutes during rush hour. Taxis are metered and drivers do not expect tips; simply pay the amount shown on the meter. Late-night airport limousine buses run from various points around Seoul to Gimpo Airport, but not directly from Seoul Station itself; you would need to walk or take a short taxi ride to a nearby pickup point such as Seoul City Hall or Gwanghwamun. Limousine bus fares are typically in the range of 8,000-12,000 KRW and the journey takes 40-60 minutes depending on traffic and the number of stops. If you are staying near Seoul Station and have an extremely early flight, consider booking a hotel with a free airport shuttle, or simply taking a taxi to avoid the risk of missing the first train. Gimpo Airport is much closer to central Seoul than Incheon International Airport, so early-morning and late-night transport is less stressful, but it is still important to confirm the exact schedule in advance rather than assuming trains run 24 hours.
Navigating Seoul Station and connecting from other parts of Seoul
Seoul Station is one of the largest and busiest transit hubs in South Korea, serving KTX high-speed trains, regular intercity trains, subway Lines 1 and 4, and the Airport Railroad. If you are arriving at Seoul Station from another part of Seoul, the station is served by subway Line 1 (dark blue) and Line 4 (light blue), both of which connect to most major neighborhoods and transfer points in the city. The station has multiple exits and levels, so give yourself an extra 10-15 minutes to navigate if you are unfamiliar with the layout or carrying heavy luggage. Signs inside the station are in English and Korean, and digital maps at major junctions show the location of ticket gates, platforms, and exits. If you are transferring from a KTX train to the AREX express or subway, follow signs for 'Airport Railroad' or the subway line number; the AREX platforms are typically one or two levels below the main KTX concourse. If you are coming from a hotel or guesthouse in central Seoul neighborhoods such as Myeongdong (명동), Insadong (인사동), or Hongdae (홍대), you can take the subway to Seoul Station and then transfer to the airport service. From Myeongdong, take Line 4 directly to Seoul Station with no transfers. From Insadong or Jongno, take Line 1 to Seoul Station. From Hongdae, take Line 2 to Sindorim (신도림) and transfer to Line 1, or take the AREX all-stop train directly from Hongik University Station (홍대입구역) to Gimpo Airport without going through Seoul Station at all, which saves time if you are staying in that area. Naver Map and KakaoMap will calculate the fastest route from your exact location and show you real-time departure times, platform numbers, and transfer instructions in English. Google Maps provides transit directions in Seoul but does not show walking routes between buildings or detailed platform information, so it is less useful once you are inside a large station like Seoul Station.
Comparison of transport options from Seoul Station to Gimpo Airport
| Option | Travel time | Approximate fare | Frequency | Best for |
|---|---|---|---|---|
| AREX express train | 18 minutes | ~5,000-6,500 KRW | Every 20-40 min | Speed, comfort, heavy luggage, tight connections |
| AREX all-stop train | 26-28 minutes | ~1,550-2,000 KRW | Every 10-15 min | Budget travel, T-money card holders, flexible schedule |
| Subway Line 5 | 28-30 minutes | ~1,550-2,000 KRW | Every 5-10 min | Eastern Seoul starting points, frequent service, very low cost |
| Subway Line 9 | ~25 minutes | ~1,550-2,000 KRW | Every 6-12 min | Fastest subway option, southern/western Seoul connections |
| Taxi | 20-50 minutes | ~20,000-30,000 KRW | On demand | Late night, very early morning, groups of 3-4 sharing cost |
Practical tips
Frequently asked questions
Before you go
The trip from Seoul Station to Gimpo Airport is short, simple, and well-served by both rail and road. Take the AREX express if you want the fastest and most comfortable ride, especially with luggage or a tight connection. Take the AREX all-stop or subway Line 5 or Line 9 if you want to save money and are travelling outside peak hours with light bags. All options are reliable, and none require transfers. Confirm schedules on Naver Map or KakaoMap before you leave, and give yourself at least 90 minutes between leaving your hotel and your flight departure time to account for check-in and security.
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