Sort your K-ETA or e-Arrival Card before you land
Nationals of 67 countries (including the US, UK, EU, Canada, Australia and Singapore) are exempt from the K-ETA through 31 December 2026 — from 2027 a K-ETA is expected to be required again. Whether or not you're exempt, submit the free e-Arrival Card online within 72 hours before arrival; travellers who already hold a valid K-ETA are exempt from it. Check the rule for your own passport before you travel.
Scam warning: Use only the official government sites (k-eta.go.kr and the e-Arrival Card portal). Look-alike sites charge a fee for what is free.