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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 December 2025 , January 2026

23 Dec - 26 Jan $ 1,026.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
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23 Dec - 12 Jan $ 1,026.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
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23 Dec - 09 Jan $ 1,026.00
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

25 Dec - 02 Jan $ 1,100.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
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23 Dec - 02 Jan $ 1,182.00
SFO
San Francisco
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SFO
San Francisco
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23 Dec - 01 Jan $ 1,423.00
SFO
San Francisco
AeroMéxico
2 STOPS
BFI
Seattle
BFI
Seattle
AeroMéxico
2 STOPS
SFO
San Francisco
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One-way flights to Seattle from San Francisco

9:30 PM - 5:35 AM
Air Excursions
2 Stops
32h 55m
SFO - BFI
$ 474
Kiwi
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6:00 AM - 5:35 AM
Air Excursions
2 Stops
24h 25m
SFO - BFI
$ 564
Kiwi
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6:00 AM - 4:05 PM
Air Excursions
2 Stops
10h 55m
SFO - BFI
$ 637
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.