Cheap flights from Seattle to San Francisco
Recently found return fares from $80, with November the cheapest month we know of. Compare dates, then book with the partner you choose.
Cheapest months to fly
Lowest recently found return fare in each month. Tap a month to see that month's calendar.
Typical return fare: $119 – $188 Middle half of the lowest fares we saw each day in the last 90 days (8 days of data). Anything below the range is a good price.
Good priceLowest fares for the best day
- Frontier AirlinesWed 4 Nov – Wed 11 Nov · 1 stop · 4h 17m $232
- Frontier AirlinesWed 4 Nov – Wed 11 Nov · 1 stop · 5h 39m $257
- Frontier AirlinesWed 4 Nov – Wed 11 Nov · 1 stop · 4h 17m $318
- Frontier AirlinesWed 4 Nov – Wed 11 Nov · 1 stop · 5h 39m $333
- Alaska AirlinesWed 4 Nov – Wed 11 Nov · Direct · 2h 10m $369
Airport in San Francisco
- SFOSan Francisco International
Airport in Seattle
- SEASeattle-Tacoma
Watch this route
FAQ
Questions about this route
Search the help center or send us a message. We reply by email.
Help center Contact us01What is the cheapest month to fly from Seattle to San Francisco?
Based on recently found fares, November 2026 has the lowest price we know of, from $80. Prices change often, so check the calendar for current fares.
02Are the prices on this page final?
No. They are recently found fares. When you open a deal, the partner shows the live price, including taxes and fees, before you pay.
03How can I get an alert when flights to San Francisco get cheaper?
Use the price alert on this page. Choose your dates or a whole month and we will email you when the fare drops.