Travel from United States to South Korea is straightforward
This is the generic answer for any United States citizen. Not legal or medical advice — verify with your airline and destination authorities before travel.
United States passport holders can travel to South Korea without a visa for stays of up to 90 days.
Generic country-level guidance for South Korea. Verify against the official source before you travel.
This page covers a direct flight to South Korea. If your route connects through a third country, that country may require its own transit visa — sometimes even for a short airside layover. Transit rules depend on your specific routing, so check the country you connect through separately, or analyse your full itinerary.
No visa required for entry to South Korea. Stays of up to 90 days are permitted under the visa-waiver agreement.
This page covers the generic case for any United States citizen. Sign in (free) to factor in your specific passport expiry, vaccinations, previous visas held, and connecting flights — and get the same analysis for your exact itinerary.
Sign in (free) to personalize →You're travelling to South Korea (KR). Your home cellular plan may or may not include data abroad — check your carrier's international options before you fly. An eSIM is a low-commitment alternative if your plan doesn't cover the destination or charges high roaming rates.
Declare USD 10,000 or equivalent when entering or leaving United States (US). Form: FinCEN Form 105. Must declare $10,000+ in currency/monetary instruments on entry or exit
Declare USD 10,000 or equivalent when entering or leaving South Korea (KR). Form: Customs declaration. Declare USD 10,000+ equivalent
Typical September conditions at ICN (South Korea (KR)): mild. Typical lows around 16°C, highs around 24°C, moderate rainfall (~150mm for the month).