Check that your passport covers the whole stay
The Korean Embassy in Singapore's current travel guidance says that a passport must remain valid throughout the stay in Korea. It does not impose a general requirement to have six months remaining for entry.
Compare your passport's expiry date with your planned departure from Korea. Leave enough time to deal with a delayed flight or other change rather than planning to travel on the last possible day.
Check the rest of the journey
A transit country or your onward destination may have a different passport-validity requirement. Check those rules as well as Korea's. If an airline's check-in system raises a warning, contact the airline to resolve the document requirement before departure.
Visa applications can have their own document requirements. If you are applying for a work, study or residence visa, follow the responsible consulate's instructions rather than assuming the tourist-entry guidance answers every application question.
Update approvals after replacing a passport
K-ETA means Korea Electronic Travel Authorization, a pre-travel approval for eligible visa-free visitors. It is linked to the passport used for the application. The official K-ETA guide requires a new application when the passport is reissued.
If you need both a passport renewal and K-ETA, renew the passport first. Check any other travel documents or bookings that contain the old passport details.
Contact your embassy if expiry becomes a problem
If your passport will expire during a planned visit, arrange renewal before travelling. If you are already in Korea and cannot obtain a replacement in time, contact your embassy or consulate promptly about the available documents and contact Korean immigration about your stay.
“What do I do if I lose my passport in Korea?” explains how to seek consular assistance. The documents your embassy can issue, and where they are accepted, depend on your nationality and journey.
