Flights

Flights from San Francisco to Seattle

Fares we've seen from San Francisco (SFO) to Seattle (SEA) start from US$69 on 1 Feb 2027 with Alaska Airlines. Prices come from partner searches in the last 48 hours and change quickly, so look before you book.

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Compare San Francisco to Seattle on your dates and see current fares from our sources, listed by price.

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Fares by month

Month	Seen from	Date	Airline
October 2026	US$88	20 Oct 2026	Southwest · direct	Check now
November 2026	US$81	11 Nov 2026	Alaska Airlines · direct	Check now
February 2027	US$69	1 Feb 2027	Alaska Airlines · direct	Check now

One-way fares in US dollars, last seen on Aviasales. They can change at any time and may not be available on every day of the month. Partner links: we may earn a commission if you book, at no extra cost to you.

Airlines on this route

Airlines we've seen with fares on this route, listed by price:

Alaska Airlines: from US$69 (direct)
Southwest: from US$88 (direct)
Frontier: from US$91 (with a stop)

Plan the rest of your trip to Seattle

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Questions about San Francisco to Seattle flights

How much do flights from San Francisco to Seattle cost? Fares we've seen start from US$69 on 1 Feb 2027 with Alaska Airlines. Fares change quickly, so look before you book.

When can I save on flights from San Francisco to Seattle? Among the next six months we checked, February 2027 had fares from US$69 in our data, while October 2026 reached US$88. Prices vary by date, so compare several days and save.

Which airlines fly from San Francisco to Seattle? We've seen fares from Alaska Airlines, Southwest, Frontier. This reflects recent searches, not a complete timetable.

Are there direct flights from San Francisco to Seattle? Yes, we've seen direct fares (7 of 10 recent fares were direct). Availability depends on the date.

Is FindMyFlight free to use? Yes. We never add anything to the fare. If you book through a partner link we may earn a commission from the partner, at no extra cost to you.