How to Use the Seoul Subway: Complete Tourist Guide

System Overview

Seoul’s subway system currently operates 23 lines across the capital and greater Seoul metropolitan area, serving over 9 million passengers every day. For tourists, you will primarily use Lines 1 through 9, the Shinbundang Line (Bundang Extension), the Gyeongui–Jungang Line, and the AREX (Airport Railroad Express). Nearly every major tourist attraction sits within a 5–10 minute walk of a subway station.

Trains run from approximately 5:30 am to midnight, with frequencies of 2–5 minutes during peak hours. Stations are air-conditioned, spotlessly clean, equipped with free Wi-Fi, and virtually always have English signage and announcements. It is widely considered the easiest major metro system in Asia for first-time foreign visitors to navigate.

How to Pay: Your Three Options

There are three ways to pay for the Seoul subway. Each has its own advantages depending on the length and style of your trip.

T-money: the essential tourist card

The T-money card (티머니) is a rechargeable RFID smart card that works on every subway line, city bus, intercity bus, most taxis, and even as payment at convenience stores (CU, GS25, 7-Eleven) and Starbucks (you can pay from your T-money balance at the till, though you cannot load a Starbucks Card with T-money). It costs ₩3,000–5,000 to purchase (the card itself) and is available at all subway station convenience stores, GS25, CU, 7-Eleven, and the airport.

Top up (charge) at any subway station ticket machine or at convenience stores at the counter. You can load ₩1,000–90,000 per top-up, and ₩30,000–50,000 is comfortable for a week. The card also enables seamless bus-to-subway transfers within 30 minutes for a discounted fare — something single-use tickets cannot do. At the end of your trip, convenience stores refund unused balances of up to ₩50,000 (a ₩500 service fee applies); for larger balances, visit the T-money headquarters office or a subway customer information centre.

Step-by-Step: How to Ride

1. Find the station entrance

   Seoul subway stations are marked with a circular logo and numbered exits (1, 2, 3…). Station names appear in Korean, English, and Chinese. Each exit leads to a different street-level location — check which exit number is nearest to your destination before descending.
2. Check the line colour and direction

   Each line has a distinct colour and number. Inside the station, follow the colour-coded signs to your line platform. Platforms show the train direction (terminus station) — make sure you are on the correct side (e.g. heading toward “Incheon” vs. “Soyosan” on Line 1).
3. Tap in at the turnstile

   Hold your T-money card against the yellow reader on the turnstile (foreign contactless bank cards do not work at the gates yet). A green light and beep confirms the fare deducted. If you hear a buzzer or see a red light, your card is out of credit — top up at the yellow recharge machine nearby.
4. Board the train

   Wait behind the yellow safety line until doors open. Painted footprints on the platform show where to queue on either side of the doors. Let passengers exit first before boarding. The bright pink seats in the middle of each car are reserved for pregnant women, and the priority seats at both ends of each car are for the elderly, pregnant women, and people with disabilities — avoid sitting in either unless you are in genuine need.
5. Navigate with the in-car display

   Every Seoul Metro car has LED displays showing the current station, next station, and direction in Korean and English. Announcements are made in Korean, English, Japanese, and Chinese. Transfer stations are announced with extra detail.
6. Tap out at your destination

   Tap your card on the turnstile reader as you exit. This is essential — failing to tap out will result in a maximum fare charge and will prevent free bus transfers. The gate will not open without tapping out.
7. Exit via the right numbered exit

   Each exit leads to a specific street corner or building. Check the exit map posted at the bottom of the escalators or use Naver Maps / Kakao Maps which specify the exit number for each destination.

Key Lines for Tourists

Seoul has 23 lines, but as a tourist you will use a handful of them regularly. Here are the most important ones:

Essential Tourist Stations

Fares and Distance Zones

Seoul Metro uses a distance-based fare system. Most tourist journeys within central Seoul fall in the base zone (under 10 km), which costs ₩1,550 with a T-money card or ₩1,650 with a single-use ticket (fares last raised in June 2025). Longer journeys add ₩100 per additional 5 km. A city bus ride costs ₩1,500 with a card.

Children (ages 6–12) ride at half the adult fare. Teenagers (13–18) pay a reduced youth fare. Children under 6 ride free. Discounts require a registered T-money card for youth fares — tourists are charged adult rates by default unless they specifically register a youth card at a station.

Operating Hours

Seoul Metro runs from roughly 5:30 am to midnight, though exact first and last train times vary by line and station. Line 2 (the circular green line) tends to run slightly later than others. Check the “First/Last Train” board posted in every station for precise times.

After midnight, the subway stops running. Your options are:

• Night buses (N buses) — Blue N-numbered buses run key routes after midnight, roughly every 30–60 minutes. Accept T-money.
• Taxis — Abundant, metered, and relatively affordable. Kakao Taxi app (English UI) allows cashless booking and avoids communication issues.
• Walking — If you are in Hongdae, Itaewon, or Gangnam, many bars and restaurants are within walkable distance of each other. Seoul is a very safe city for night walking.

Etiquette and Unwritten Rules

Seoul Metro etiquette is taken seriously. While nobody will physically stop you for breaking these norms, following them marks you as a respectful visitor:

• Priority seats (at the ends of each car) and pink pregnancy seats (mid-car) — Priority seats are reserved for the elderly, pregnant women, and people with disabilities; the bright pink seats are specifically for pregnant women. Even if the train is empty, Koreans often avoid sitting there. Follow their lead.
• No eating or drinking — Not officially prohibited, but considered rude. Eating smelly food, in particular, can result in confrontation.
• Keep phone calls very short or take them outside — Koreans almost universally use earphones and speak very quietly on the subway. Loud phone conversations are frowned upon.
• Give up your seat — If an elderly person is standing near you, offering your seat is expected and appreciated.
• Stand on the right of escalators — The left side is for walking. Blocking the left side causes frustration during rush hour.
• Backpacks at busy times — During rush hour (7:30–9:30 am, 6–8 pm), remove your backpack and hold it in front of you or on the overhead rack to avoid taking up extra space.

Best Navigation Apps

Google Maps works reasonably well for Seoul subway navigation but sometimes lags on real-time data. These two apps are significantly more reliable:

Naver Maps (네이버 지도)

Korea’s dominant mapping app. Available in English. Provides door-to-door transit directions including exact platform numbers, transfer instructions, first/last train times, and real-time train locations. Also integrates walking, taxi, and driving options. The subway route view specifies which car number to board to be closest to your exit — a genuinely time-saving feature on long journeys.

Kakao Metro (카카오 메트로)

Dedicated subway app. The English UI is straightforward. Excellent for checking live train departure times, finding the fastest route with minimum transfers, and saving favourite stations. Also shows real-time congestion levels per car (so you can choose a less crowded section).