Your First 24 Hours in Seoul, Without Getting Stuck at the Card Reader

A traveler walks out of the arrivals gate at Incheon Airport Terminal 1 and stops at an ATM. The card goes in. The screen pauses, then spits it back out. The next machine does the same. So does the one after that. When 28 overseas YouTubers who visited Korea in September 2026 were asked what went wrong, the complaint that came up most often was about payments, cash and ATMs. Fifteen of the 28 named it. One creator from Saudi Arabia lost his entire first 24 hours in Korea because every machine at the airport and in the city refused his card. That lost day disappears if you settle three things before you land.

At a glance: Incheon Airport Terminal 1 · shared ATMs open 24 hours (1st floor public area near Exits 4, 6, 9 and 11; 3rd floor public area near check-in counters C, E, J and L; basement level 1 beside the all-stop airport train ticket machines) · Woori Bank ATM open 24 hours (3rd floor public area near check-in counter H) · KB Kookmin foreign-currency ATM, 06:00–22:00 (3rd floor public area near check-in counters F and M) · 24-hour currency exchange (1st floor public area near Exits 6 and 11) · tourist hotline 1330

In Korea, a foreign-issued card is either almost always accepted or almost never accepted, and the dividing line is the place. Anywhere a human being handles the terminal, you will usually be fine: department stores, hotels, convenience stores, big chain outlets, airport shops. The wall goes up where there is no human. Self-order kiosks in restaurants and cafes, transit-card recharge machines in subway stations, market stalls, and online checkout pages that demand identity verification through a Korean mobile number are the usual culprits. ATMs differ machine by machine too. Before you insert anything, look on the screen and the casing for the international brand marks — Visa, Mastercard, PLUS, Cirrus, UnionPay, JCB — and if they are not there, move to the next machine rather than waste time. According to the facility directory published by Incheon International Airport Corporation, the shared ATMs in Terminal 1 run 24 hours, and on the 1st floor where arrivals come out they sit near Exits 4, 6, 9 and 11. The KB Kookmin machine that dispenses foreign currency is near check-in counters F and M on the 3rd floor, but it only opens from 6 a.m. to 10 p.m.

You need that cash immediately because of the transit card. T-money is Korea's rechargeable transit card, tapped on subway gates and buses; you buy one for 3,000 to 5,000 won at a convenience store or subway station, and from then on topping it up is effectively a cash-only act. T-money's own guidance for foreign visitors says not to assume a foreign-issued credit card can reload a physical T-money card, and that cash remains the reliable method. Seoul's own transit pass, the Climate Card, also requires 3,000 won in cash for the physical card, and the Korea Tourism Organization notes that it can only be loaded with cash or a Korean-issued card. WOWPASS, the prepaid card made for foreign visitors, costs 6,000 won to issue the first time, and at the airport you can get one from the machines at CU convenience store branch 1 in Terminal 1 and CU convenience store branch 3 in Terminal 2. The machines take cash, but the app accepts overseas cards up to 200,000 won per top-up and 1,000,000 won per month. Note that the T-money balance riding on the same card is a separate wallet, so your fares still have to be loaded with cash.

The last wall is online. Korean booking sites and apps are often built to verify you through a Korean mobile number, or to make you register a card with a domestic payment service first, so a foreign card frequently gets rejected at the final step even after you have typed in every digit. There are three ways around it. First, pay with a Korean-issued prepaid card such as WOWPASS, which the system reads as a domestic card. Second, find the same product on a global booking platform that takes foreign cards by default. Third, do it by phone. The 1330 tourist hotline run by the Korea Tourism Organization answers 24 hours in English, Japanese, Chinese and other languages, and will place the booking call for you and interpret. Decide before you land which ATM will give you 50,000 won in cash and which prepaid card you will carry, and the 24 hours that Saudi creator lost shrinks to 20 minutes.