A short comparison for tourists, patients and business travellers
Quick answer
K-ETA is an online pre-boarding screening for short visa-free stays: self-filed, quick and inexpensive. A visa is issued by a Korean embassy or consulate, needs more documents, and is required for stays beyond the visa-waiver period, for work, study or continuing treatment, or where past history makes K-ETA unviable.
Legally, K-ETA does not grant residence rights; it permits you to travel to the border for assessment. A visa is advance permission tied to a clearly stated purpose.
For Thai tourists staying within the visa-waiver period, K-ETA is sufficient and far more convenient — no financial documents, no interview.
For patients needing continuing care — multi-stage treatment or surgery with long follow-up — a medical treatment visa suits better: longer duration and provision for an accompanying carer.
For business travellers, short meetings and negotiations fall within a short stay, but paid work for a Korean employer requires a work visa.
Practically, ask two questions: how long, and doing what. Short and not working means K-ETA is the right route.
No.
There is no renewal; file a new application when it expires.
At the Korean embassy or consulate, using the hospital's invitation and treatment plan.
Generally not; obtain the correct visa before travelling.
Apply for the appropriate visa beforehand, or request an extension from immigration with documented grounds.
3 points • reviewed 2026-09-15
Reviewed and last updated: 2026-09-15
2 sources • every claim is traceable
https://www.mfds.go.kr/eng/index.do
https://www.mohw.go.kr/eng/
Last updated: 2026-09-15 · This content is for information only and is not medical advice. Consult a qualified doctor before making treatment decisions.
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