Seattle-Tacoma International (SEA) to San Francisco International (SFO).
| Departure | Return | Price |
|---|---|---|
| 06/02/2026 | 06/09/2026 | $177 |
| 06/03/2026 | 06/09/2026 | $177 |
| 06/17/2026 | 06/24/2026 | $177 |
| 07/01/2026 | 07/07/2026 | $177 |
| 07/01/2026 | 07/08/2026 | $177 |
| 07/08/2026 | 07/14/2026 | $177 |
| 07/08/2026 | 07/15/2026 | $177 |
| 07/14/2026 | 07/21/2026 | $177 |
| 07/14/2026 | 07/22/2026 | $177 |
| 07/15/2026 | 07/21/2026 | $177 |
Based on current fares, August is the cheapest month to fly from Seattle to San Francisco, with average fares around $203 round trip (as low as $177).
See the full month-by-month and day-of-week price analysis
Best Time to Fly SEA → SFODeparture date prices (economy, round trip). Green = cheap, red = expensive.
The cheapest month to fly from Seattle to San Francisco is August, with average round-trip fares around $203. Fares in August start as low as $177. The most expensive month is May, averaging $222.
A nonstop flight from Seattle to San Francisco takes approximately 2h.
The cheapest flight from Seattle to San Francisco currently starts at $177 round trip in economy class.
The average round-trip flight price from Seattle to San Francisco is $225 in economy class.
The distance is 679 miles (1093 km). with a nonstop flight time of about 2h. The lowest fare currently available is $177 departing in June. The average round-trip fare is $225.
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