Seoul is one of the easiest big cities to move around in — and one of the most confusing to pay for. Step out of Incheon Airport arrivals and three cards compete for your wallet: a green Climate Card promising unlimited rides, a WOWPASS that exchanges your cash and pays for coffee, and the classic T-Money every Korean carries. Each is genuinely good at something, and the wrong choice costs you money or a daily annoyance discovered at the ticket machine with a queue behind you.
This guide settles it with the numbers as they stand in November 2026: what each card costs, what it quietly does not cover, and which one a Seoul local would hand you.
Quick Verdict
For a first 3-day trip inside Seoul, buy the Climate Card 3-day pass (₩10,000 plus a ₩3,000 card): it beats pay-as-you-go above three rides a day. Choose WOWPASS instead if you also want a card that pays in shops and exchanges your cash. Keep T-Money for arrival day, for the airport train, and for any trip where you ride once or twice a day.
The 30-second comparison
Three cards, three business models. One is a pass, one is a prepaid wallet with a transit chip, and one is pure pay-as-you-go. Everything below uses the fares in effect since Seoul’s last fare rise in June 2025: ₩1,550 for a subway ride under 10 km and ₩1,500 for a blue or green city bus.
| Card | Cost to start | Subways | City buses | Shops & convenience stores | Foreign card top-up | Incheon Airport (AREX) |
|---|---|---|---|---|---|---|
| Climate Card short-term pass |
₩3,000 card + ₩5,000–₩20,000 pass | Unlimited inside Seoul (no Shinbundang, no GTX) | Unlimited on Seoul-licensed buses | No — transit only | Yes, new machines at lines 1–8 stations, ≈3.7% service fee | Can ride to the airport; cannot board at Incheon T1/T2 |
| WOWPASS | ₩6,000 card (₩5,500 with an in-app voucher) | Pay-as-you-go from its T-money balance | Same pay-as-you-go | Yes — chip card, works like a Korean debit card | Yes — cash at kiosks in 16 currencies, or a foreign card in the app | Kiosks at T1/T2, Korean won cash only |
| T-Money | ₩3,000–₩5,000 card | ₩1,550 per ride (first 10 km) | ₩1,500 per ride | Yes at most convenience stores | No — cash top-up at stores and station machines | Yes — AREX trains and airport buses |
Prices and coverage checked 15 November 2026. Climate Card passes: 1 day ₩5,000 · 2 days ₩8,000 · 3 days ₩10,000 · 5 days ₩15,000 · 7 days ₩20,000.
1. Climate Card: unlimited rides, and one big catch
The Climate Card is Seoul’s own transport pass: pay once, ride as much as you like. One thing changed this autumn and most English guides have not caught up — Seoul retired the 30-day monthly Climate Card at the end of September 2026. Visitors now buy the short-term pass, which is what you want anyway. The maths is simple: divide the pass price by an average ride of about ₩1,540.
- 3-day pass, ₩10,000 — pays off from your 7th ride, so roughly 3 rides a day.
- 5-day pass, ₩15,000 — pays off at 3 rides a day as well, with more slack.
- 1-day pass, ₩5,000 — needs 4 rides in one day to beat T-Money.
How to buy and use a Climate Card
- Buy the physical card (₩3,000). Convenience stores near subway stations, station information centres, and tourist information desks in Myeongdong and Seoul Tourism Plaza stock it. The card fee is separate from the pass and is not refundable.
- Load a pass at a station machine. Choose 1, 2, 3, 5 or 7 days on the screen. Since March 2026, the new machines on lines 1–8 accept foreign Visa and Mastercard for this purchase, with a service fee of roughly 3.7% — the fastest option if you have no won yet.
- Know that the clock starts immediately. A short-term pass is active from the moment you load it, so load it on the morning you start riding, not the night before.
- Tap in and tap out on every subway gate and bus reader, exactly as you would with any transit card.
The catch: it does not work on the airport train into Seoul
This is where first-time visitors get caught. Coverage inside Seoul is generous, but the airport railway has an asymmetry that is easy to miss:
- Going to the airport: you can tap in at the six Seoul stations on the AREX line (Seoul Station, Gongdeok, Hongik University, Digital Media City, Magongnaru, Gimpo Airport) and ride to Incheon T1 or T2.
- Arriving from the airport: you cannot board at Incheon T1/T2 with a Climate Card. Those stations are exit-only for this pass, so you need a T-Money card, a single-journey AREX ticket, or a plain AREX ticket for that first ride into the city.
The pass also stops at Seoul’s edges: Gimpo city, Goyang, Gwacheon, Seongnam and other Gyeonggi destinations are outside the covered zone, as are the Shinbundang Line, the GTX, the Ttareungi public bikes and the Hangang Bus. Ride outside the zone and you will be charged the full fare at the exit gate — so check the route before an airport or day-trip run.
2. WOWPASS: the all-in-one card
WOWPASS is the only card here that solves two problems at once: it is a prepaid won card you can tap in any shop, restaurant or taxi that takes a local card, plus a T-money chip for subways and buses — and it comes out of a kiosk that exchanges your foreign cash on the spot, in 16 currencies, at a live rate shown before you confirm. That matters because Korea is still a cash-and-local-card country in small places: a market stall or neighbourhood bakery may take a Korean card and nothing else.
What WOWPASS actually costs
| Item | Cost in 2026 | Note |
|---|---|---|
| Card issue | ₩6,000 | One-off, not refundable; ₩5,500 if you buy a voucher in the app first |
| Currency exchange & cash top-up at a kiosk | Free | The margin sits inside the rate, like any money changer |
| Payments in shops | Free | No annual fee, no per-payment fee |
| Cash withdrawal | ₩1,000 | Maximum ₩100,000 at a time, from WOW Exchange machines |
| Card reissue | ₩4,000 | The payment balance survives; a lost T-money balance does not |
How to get and load one
- Find a kiosk. They sit in Myeongdong, Hongdae, major hotels and subway stations; the app shows a live map. The machines inside Incheon Airport take Korean won cash only and cannot exchange currency.
- Scan your passport. Registration is mandatory — this is a foreign-visitor product and is not sold to Korean nationals.
- Insert your cash and confirm the won amount on screen. The balance loads instantly; limits are ₩1,000,000 balance, ₩2,000,000 per day and ₩10,000,000 per week in cash top-ups.
- Load the T-money side separately. The transit chip has its own balance, topped up at subway machines or convenience stores. Topping up WOWPASS does not load your transit balance, and transit spending never earns the card’s cashback.
Two cautions: topping up in the app with a foreign credit card adds a service fee on top of your bank’s own foreign-transaction charge, so cash at a kiosk is cheaper; and the card is registered to one person, so lending it does not work.
3. T-Money: the safe, simple default
T-Money is not a pass and never pretends to be. Buy a card for ₩3,000 at any convenience store, load cash in steps of ₩1,000 (up to ₩90,000 per top-up, ₩500,000 maximum balance), and each ride is deducted at the normal fare. It works on subways and buses nationwide, in most taxis, and in convenience stores.
Its quiet superpower is transfers: within 30 minutes of tapping out (60 between 21:00 and 07:00) your next bus or train is charged by total distance rather than as a new journey. You must tap out on buses for that to work.
What T-Money does better than anything else on this list:
- Arrival day. It is the one card that takes you from Incheon Airport into the city on the AREX all-stop train (₩4,750 from T1, ₩5,350 from T2) or the express (₩13,000, 43 minutes).
- Low-ride days. Two or three rides across a lazy day and a pass has already lost you money.
- Trips outside Seoul — Busan, Gyeongju, Jeju buses and intercity terminals all take it.
One practical limit worth knowing: foreign contactless Visa and Mastercard still cannot be tapped on Seoul’s subway gates or buses as of November 2026, so a transit card is not optional for most visitors.
A local’s exact 3-day plan — and what it costs
The combination I would hand a friend arriving Friday morning, leaving Tuesday, staying in Hongdae or Myeongdong and sightseeing for three full days.
| When | What you ride | Which card | Cost |
|---|---|---|---|
| Arrival day | AREX all-stop, Incheon T1 → Hongik University; 2–3 subway hops after check-in | T-Money (buy at the airport convenience store) | ₩3,000 card + ₩10,000 loaded |
| Day 1 morning | Buy the Climate Card, load the 3-day pass at the station machine | Climate Card | ₩3,000 + ₩10,000 |
| Days 1–3 | 4–5 rides a day: palaces, markets, a Han River evening, a Bukchon walk | Climate Card, unlimited | Included |
| Day 3 evening | Late taxi home after dinner | T-Money (taxis do not take the pass) | Metered |
| Departure | AREX back to Incheon T1 | Climate Card (tap in at Hongik University) | Included in the pass if still active, otherwise T-Money ₩4,750 |
Run the numbers and the gap is real: the same three sightseeing days on pure T-Money would cost about ₩18,500 in rides alone, against ₩10,000 for the pass — roughly ₩8,500 saved, minus the one-off ₩3,000 card. If you ride less than three times a day, skip the pass and stay on T-Money; you will spend less and carry one fewer card.
Who should pick WOWPASS instead
If you arrive with a few hundred dollars or yen in cash, plan to shop in markets, and want one card for coffee, taxis and the subway, WOWPASS replaces both the money changer and T-Money in one stop. Add a Climate Card only if you ride heavily — the two work side by side.
FAQ for first-time visitors
Can I use the Climate Card from Incheon Airport into Seoul?
No. Incheon Airport T1 and T2 stations are exit-only for the short-term pass — you can ride from Seoul to the airport, but not from the airport into Seoul. Use a T-Money card, an AREX single-journey ticket, or buy a T-Money card at the airport convenience store before you board.
Is the 3-day Climate Card worth it?
Yes if you ride three or more times a day. The 3-day pass costs ₩10,000, which equals about 6.5 subway rides at ₩1,550 — the point where unlimited riding starts to pay for itself.
Does WOWPASS work on the Seoul subway?
Yes, through its built-in T-money chip, but you must load that transit balance separately at a subway machine or convenience store. It is pay-as-you-go — it does not turn into an unlimited pass.
Can I tap my foreign credit card directly at Seoul subway gates?
Not yet, as of November 2026. Seoul’s gates accept T-money, Climate Card and other Korean transit cards. The one exception is the ticket machine: since March 2026 the new machines on lines 1–8 sell and load Climate Card passes with foreign Visa and Mastercard.
What happens if I leave Seoul with a Climate Card?
You will be charged the full fare at the exit station, because the pass only covers the Seoul zone. The Shinbundang Line, GTX, Ttareungi bikes and the Hangang Bus are excluded entirely — check the route before a day trip to Goyang, Seongnam or Gwacheon.
Is T-Money refundable when I leave?
The card fee is not, but any remaining balance can be refunded at convenience stores and station service centres for a small fee — register the card if you plan to claim it back.
Last checked: 15 November 2026, against Seoul Metropolitan Government transport guidance, AREX fares and WOWPASS official fee information. Fares and pass rules change — confirm at the machine before you load.