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Cheap flights from San Francisco (SFO) to Seattle (BFI)

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How to find the cheapest flight from San Francisco (SFO) to Seattle (BFI)

How to find the cheapest flight from San Francisco (SFO) to Seattle (BFI)
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How to find the cheapest flight from San Francisco (SFO) to Seattle (BFI)
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How to find the cheapest flight from San Francisco (SFO) to Seattle (BFI)
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Cheap flights from San Francisco to Seattle in January , February 2026

29 Jan - 03 Feb $ 813.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
Pick dates
29 Jan - 09 Feb $ 860.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
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29 Jan - 02 Feb $ 866.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
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Last minute flights from San Francisco to Seattle

29 Jan - 02 Feb $ 882.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
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29 Jan - 01 Feb $ 1,022.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
Pick dates
25 Jan - 01 Feb $ 1,040.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
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One-way flights to Seattle from San Francisco

2:08 PM - 2:45 PM
Air Excursions
2 Stops
25h 27m
SFO - BFI
$ 413
Kiwi
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8:23 PM - 2:45 PM
Air Excursions
2 Stops
19h 12m
SFO - BFI
$ 436
Kiwi
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7:19 PM - 2:45 PM
Air Excursions
2 Stops
20h 16m
SFO - BFI
$ 454
Kiwi
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How to find the cheapest flight from San Francisco (SFO) to Seattle (BFI)

Related info for your journey
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How to find the cheapest flight from San Francisco (SFO) to Seattle (BFI)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from San Francisco (SFO) to Seattle (BFI)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.