Travel Basics
Transportation & Climate Card
Climate Card unlimited pass vs T-money, KTX booking rules, and Seoul subway transfers.
Korean public transit is one of the most punctual and clean systems in the world. The Seoul subway runs to the minute from 5:30 AM until just before midnight. Buses queue politely and only stop at marked stops. Even first-timers adapt within 30 minutes.
1. Card choice — Climate Card vs T-money vs K-Pass
Pick differently based on how many days and which cities. Stay in Seoul for 4+ nights and an unlimited card wins; do Seoul + Busan + Gyeongju and a regular card is better.
| Card | Where it works | Price (2026) | Best for |
|---|---|---|---|
| Climate Card 1-day | Seoul subway + bus unlimited | 5,000 KRW | 4+ rides per day in Seoul |
| Climate Card 7-day | Seoul subway + bus unlimited | 20,000 KRW | 7+ days in Seoul |
| T-money | Nationwide transit | 4,000 KRW card + top-up | Travel beyond Seoul too |
| K-Pass | National + rebate | Monthly billing | Korean residents (not for short-term tourists) |
If you'll be in Seoul for 4+ nights riding 4+ times a day, get the Climate Card. 5,000 KRW for unlimited daily rides is freeing. Foreigners can buy from station kiosks with English / Chinese / Japanese support.
Watch out: Climate Card is Seoul-only
It does NOT work on the Sinbundang Line, Incheon Airport Railroad, or Gyeonggi-do buses. Crossing Seoul's boundary triggers a surcharge or rejects the card. To reach Incheon Airport, buy a separate ticket or use T-money.
2. Subway — transfer paradise
Seoul subway runs Lines 1~9 plus Bundang, Sinbundang, Gyeongui-Jungang, Ui-Sinseol, Sillim, GTX-A, and the AREX. It looks complex but Naver Map gives minute-by-minute transfer instructions for any origin/destination pair.
Line colors — beginner cheat sheet
Each Seoul subway line has its own color. Signs, train exteriors, and maps all share the color, so you can navigate by color alone. Memorize the most-used lines and you're set.
| Line | Color | Key stations |
|---|---|---|
| Line 1 | Dark blue | Seoul Station, Jongno 3-ga, Dongdaemun, Cheongnyangni |
| Line 2 | Green | Gangnam, Hongik Univ, Jamsil, Sinchon, City Hall, Euljiro |
| Line 3 | Orange | Gyeongbokgung, Anguk, Apgujeong, Sinsa, Yangjae |
| Line 4 | Sky blue | Myeongdong, Seoul Station, Dongdaemun, Sadang, Nowon |
| Line 5 | Purple | Gwanghwamun, Yeouido, Gimpo Airport, Jamsil |
| Line 6 | Brown | Itaewon, Hapjeong, Gongdeok |
| Line 7 | Olive (dark green) | Gangnam-gu Office, Cheongdam, Konkuk Univ |
| Line 8 | Pink | Jamsil, Garak Market |
| Line 9 | Gold (beige) | Yeouido, Express Bus Terminal, Sinnonhyeon |
| AREX | Teal | Incheon Airport, Gimpo, Hongdae, Seoul Station |
Tip: Memorize 3 lines = covers 90% of Seoul
Tourists most often use Line 4 (Myeongdong, Dongdaemun), Line 2 (Gangnam, Hongdae), Line 3 (Gyeongbokgung). Master these three; Naver Map handles the rest.
Exit numbers — "meet me at exit 9"
Korean subway stations have multiple exits, all numbered from 1. Most stations have 4~12 exits; large ones (Gangnam, Sadang) can have 14+. That's why Koreans say "let's meet at Gangnam Station Exit 11" instead of just "Gangnam Station." Naver Map shows which exit is closest to your destination.
[Exit 11 sign at Gangnam Station]
Tip: Wrong exit costs minutes
At Gangnam Station, Exit 1 and Exit 11 are on opposite sides of a major street. Pick the wrong one and you'll cross two crosswalks (5~10 min lost). Always exit by the number Naver Map gives.
Transfer fares — what does it cost?
The Seoul subway base fare is 1,400 KRW per card tap (2026). The first 10 km is included; beyond that, +100 KRW per 5 km. So Gangnam → Hongdae (~8 km) is 1,400 KRW; Gangnam → Jamsil (~12 km) is 1,500 KRW.
Transfer rules — no extra fare
- Same card, transfer to another line or bus within 30 minutes — no extra fare
- Total trip beyond 10 km adds 100 KRW per 5 km
- You MUST tap your card on the reader on the new vehicle for the transfer to apply
- Forget to tap when exiting and the next ride charges max-distance penalty
First and last train times
First train at 5:30 AM. Last train varies by line — usually around midnight. Lines 1 and 2 run until close to midnight; some outer lines stop around 11:30 PM.
Watch out: Missing the last train means expensive taxi
Late-night taxi surcharges (20~30%) apply between 1~3 AM. If you need to head back late, pre-book Kakao T and aim to leave before the last train.
Tip: GTX-A new line
Opened March 2024, GTX-A connects Suseo / Samseong to Dongtan in 23 minutes. Faster than regular subway but pricier (4,000~5,000 KRW). Use it only when you specifically need to reach Gyeonggi-do quickly.
3. Buses — color-coded by route type
Seoul buses are color-coded by service area. Naver Map will tell you which bus to take, but knowing the color helps you understand at a glance.
| Color | Type | Service area | Base fare (2026) |
|---|---|---|---|
| Blue | Trunk bus | Major routes across central Seoul (long distance) | 1,500 KRW |
| Green | Branch bus | Neighborhood feeder to subway stations | 1,500 KRW |
| Red | Wide-area bus | Seoul ↔ Gyeonggi-do (long distance, guaranteed seat) | 3,000 KRW |
| Yellow | Circulation bus | Downtown loops (tourist areas) | 1,400 KRW |
| Green village bus | Village shuttle | Hilly neighborhoods, short loops | 1,200 KRW |
Reading bus numbers
Seoul bus numbers encode meaning. The first digit is the origin zone, the second the destination zone, the last is a serial. For example, "152" means it runs from Zone 1 (Dobong / Gangbuk) to Zone 5 (Yeongdeungpo / Gwanak), route #2. You don't need to memorize this — just confirm your bus number on the stop signage.
At the bus stop, check 4 things
- The stop sign lists every bus number that stops there
- A digital display shows real-time arrivals — e.g., "Bus 152: arriving in 4 min"
- Cross-check the number on Naver Map before boarding
- Wave your hand as the bus approaches — without a signal it may pass by
Tip: English announcements on board
Seoul city buses announce every stop in Korean → English → Chinese → Japanese. Note your stop's Korean name in advance and listen for the English version. Press the red "Stop" button before your stop.
Watch out: Tap your card when getting OFF too
Buses (unlike subways at some stations) require tapping when boarding AND alighting. Forgetting to tap on exit charges max-distance penalty on your next ride. Even when several people exit together, you must tap your own card.
4. KTX & SRT high-speed trains
Seoul to Busan in 2.5 hours by KTX, Seoul to East Daegu in 1h50m. Often faster and easier than flying. KTX and SRT have nearly identical speeds but different operators — KTX by KORAIL, SRT by SR Corp.
KTX & SRT booking essentials
- Weekend / holiday tickets sell out 2~3 weeks ahead. Book early.
- KTX: LetsKorail website or KorailTalk app (English supported)
- SRT: SR website or SRT app
- Foreigner-only KR PASS — 3 / 5 / 7 / 10-day unlimited
- Price: Seoul → Busan KTX about 59,800 KRW (2026)
[KTX platform signage at Seoul Station]
5. Kakao T taxis — easy for foreigners
Uber doesn't operate in Korea. Kakao T fills the same role. Foreigners can use the English menu, and switching the payment option to "Pay to Driver" lets you pay with foreign card or cash on arrival — no Korean card registration needed.
Tip: Regular vs Deluxe vs Kakao Black
Orange / silver = regular taxi (cheapest). Black = "Deluxe" with 1.5x base fare. "Kakao Black" = premium vehicle, 2x regular. Regular taxis are plenty for tourists.
6. Where to start?
Seoul region guide
Gangnam, Hongdae, Jongno, Itaewon — Seoul neighborhoods with featured spots.
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