Before You Fly: Visa, SIM & Currency

Get these three things sorted before your trip and you'll land in Seoul stress-free.

Visa: K-ETA

Most visitors need a K-ETA (Korea Electronic Travel Authorization) for visa-free entry. Apply online at least 72 hours before departure; it costs about $10 and is valid for 2 years. See our [K-ETA step-by-step guide](/essentials/visa-keta) for full details.

SIM Cards & Connectivity

Stay connected with a local SIM or eSIM. You can buy at the airport or order an eSIM before you fly. Our [Internet & Communication guide](/essentials/communication) covers SIM cards, eSIMs, and WiFi options.

Currency & Money

Korean Won (₩) is used everywhere. Exchange some cash at the airport or in Myeongdong/Itaewon for better rates. ATMs and cards work widely; see our [Money & Currency guide](/essentials/money) for exchange tips and card use.