San Francisco to Seattle flights
The cheapest round trip we found from San Francisco to Seattle is $127 (Dec 16 – 24, Nonstop).
SFO to SEA · Round trip · Economy · Prices per person in USD · Price found (1 day ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $157 |
| December 2026 | $127 (cheapest month) |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 16 – 24 8 nights · leave Wed$127$127 Book
Alaska Airlines Nonstop · 2h 16m -
Dec 15 – 24 9 nights · leave Tue$134$134 Book
Alaska Airlines Nonstop · 2h 09m
-
Dec 23 – 29 6 nights · leave Wed$223$223 Book
United Airlines 1 stop · 4h 42m -
Nov 27 – 29 2 nights · leave Fri$253$253 Book
United Airlines Nonstop · 2h 17m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in Seattle
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Airport transfer to Seattle
Fixed prices from SEA on KiwitaxiTo see transfer prices here, turn on partner content in .
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Plan the rest of your trip
Seattle · Dec 16 – 24Partner links: we may earn a commission if you book, at no extra cost to you.
More from San Francisco
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- Ontario $34 −43%
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Flights to Seattle from other cities
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- Ontario $208 −8%
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San Francisco to Seattle: questions
How much does a flight from San Francisco to Seattle cost?
The cheapest round trip we have found right now is $127, leaving December 16 and returning December 24. Prices are per person, economy, in USD.
Which airports do San Francisco to Seattle flights use?
San Francisco airports include San Francisco International (SFO). Seattle airports include Seattle-Tacoma International (SEA) and Boeing Field International (BFI). The prices on this page cover every airport in both cities (SFO and SEA are the city codes).
About this route
We track round-trip economy fares from San Francisco (United States) to Seattle (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $127, departing December 16 and returning December 24 on a nonstop flight. The cheapest month to fly in our data is December, from $127. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.