Can I buy an AREX Express ticket on the day?

Yes: ticket machines at Seoul Station and at both airport terminals sell express tickets, and you can also book online.

Can I pay for AREX Express with a foreign card?

AREX lists Visa, Mastercard, JCB, Diners Club, American Express and UnionPay for express tickets.

How far ahead can I book?

Up to 2 months ahead, for up to 12 passengers at a time.

AREX Express Tickets: Buying, the QR Code and Changing a Booking

You can book an AREX Express ticket online, in the AREX app, or buy it at a machine at Seoul Station, Terminal 1 or Terminal 2. The ticket is a QR code that you scan at the gate. The operator lists the adult fare as KRW 13,000.

Draft: the payment facts in this guide come from the operators' official pages and have not yet been checked by a person. Confirm with the operator before you rely on them.

Where to buy

Online: the AREX website (computer or mobile) and the AREX Express Train app.
At the station: ticket machines at Seoul Station (level B2) and in the transport centres at Terminal 1 and Terminal 2 (level B1).
You can search dates up to 2 months ahead and book up to 12 passengers at once. Children are ages 6 to 12 on the travel date.

How to pay

Domestic and international credit cards: Visa, Mastercard, JCB, Diners Club, American Express and UnionPay among them.
Online only: wallets such as Kakao Pay, PAYCO, Alipay, WeChat Pay, KB Pay and Samsung Pay.
A cart holds your seats for 20 minutes: pay within that time.

Discounts and partner bookings

At the discount step you can enter a coupon, a voucher number or a partnership discount card, and choose public discounts such as the child fare. The operator also lists "alliance" discounts for people who book through partner platforms (a website or a QR code), online only. The official AREX Express app has a feature to scan a voucher QR code, which suggests how a partner voucher is turned into a ticket; if you bought through a travel platform, follow the instructions in your confirmation.

The QR code, changes and refunds

Your ticket is a QR code: print it as a home ticket, show it on the mobile site, or open it in the app under Check Ticket. Scan it at the gate.
A ticket can be changed up to 3 times while seats are available. The operator's guide and its terms of carriage describe the change fee differently (the guide: the first change free, a fee from the second change on the day of departure; the terms: a small fee, waived if you apply by the day before): check the fee on the screen before you confirm.
Reissuing a ticket creates a new QR code, and the old printed ticket stops working.
A cancelled card payment is voided at once, but the refund can take 2–3 days depending on your card issuer.

Frequently asked questions

Can I buy an AREX Express ticket on the day?: Yes: ticket machines at Seoul Station and at both airport terminals sell express tickets, and you can also book online.
Can I pay for AREX Express with a foreign card?: AREX lists Visa, Mastercard, JCB, Diners Club, American Express and UnionPay for express tickets.
How far ahead can I book?: Up to 2 months ahead, for up to 12 passengers at a time.

Sources: AREX: express usage guide · AREX: express train introduction. Checked 2026-11-09. Fares, times and rules change: confirm with the operator before you travel.