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San Francisco to Seoul flights
One-way from $535 for the next 12 departure dates (cheapest Nov 17). Nonstop San Francisco to Seoul takes about 11h 50m. Compare cached fares, then open prefilled OTA searches.
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How it works
Route tip
Incheon is the main gateway while Gimpo (GMP) handles regional traffic. Seoul fares swing with Korean holiday seasons.
When it is cheaper
January–March and November are cheapest; Chuseok and Lunar New Year are peak.
FAQ
How long is the flight from San Francisco to Seoul?
A nonstop flight takes about 11h 50m, covering roughly 9,086 km. Actual block time varies by airline, aircraft and winds, so check the specific schedule before booking.
When are San Francisco to Seoul flights cheapest?
The lowest cached one-way fare across the next 12 departure dates is $535 (departing Nov 17). January–March and November are cheapest; Chuseok and Lunar New Year are peak.
Which airports should I compare?
Departure: SFO (San Francisco Intl); also check OAK, SJC. Arrival: ICN (Incheon); also check GMP.
Are the prices on this page live?
No. The page and fare calendar use cached reference fares that can be delayed or change at any time. The booking site is the source of truth.
Can I book directly on this site?
No. We only prefill the search. Clicking through opens a third-party site where you confirm live prices and complete the booking.
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Page updated 2026-11-11