San Francisco International (SFO) to Incheon International (ICN). Served by Korean Air, Asiana, United.
| Departure | Return | Price |
|---|---|---|
| 05/23/2026 | 05/29/2026 | $842 |
| 05/23/2026 | 05/30/2026 | $842 |
| 05/23/2026 | 06/01/2026 | $842 |
| 07/04/2026 | 07/10/2026 | $842 |
| 07/04/2026 | 07/11/2026 | $842 |
| 07/04/2026 | 07/13/2026 | $842 |
| 07/05/2026 | 07/10/2026 | $842 |
| 07/05/2026 | 07/11/2026 | $842 |
| 07/05/2026 | 07/13/2026 | $842 |
| 07/06/2026 | 07/11/2026 | $842 |
Based on current fares, August is the cheapest month to fly from San Francisco to Seoul, with average fares around $1078 round trip (as low as $1012).
June tends to be more expensive, averaging $1358.
See the full month-by-month and day-of-week price analysis
Best Time to Fly SFO → ICNDeparture date prices (economy, round trip). Green = cheap, red = expensive.
The cheapest month to fly from San Francisco to Seoul is August, with average round-trip fares around $1078. Fares in August start as low as $1012. The most expensive month is June, averaging $1358.
A nonstop flight from San Francisco to Seoul takes approximately 12h.
Korean Air, Asiana, and United fly from SFO to ICN. That's 3 airlines serving this route.
The cheapest flight from San Francisco to Seoul currently starts at $842 round trip in economy class.
The average round-trip flight price from San Francisco to Seoul is $1336 in economy class.
The distance is 5595 miles (9002 km). with a nonstop flight time of about 12h. Airlines on this route include Korean Air, Asiana, United. The lowest fare currently available is $842 departing in May. The average round-trip fare is $1336.
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