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Cheap flights from Boise (BOI) to Seattle (BFI)

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0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Boise (BOI) to Seattle (BFI)

How to find the cheapest flight from Boise (BOI) to Seattle (BFI)
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How to find the cheapest flight from Boise (BOI) to Seattle (BFI)
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How to find the cheapest flight from Boise (BOI) to Seattle (BFI)
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Cheap flights from Boise to Seattle in December 2025 , January 2026

22 Dec - 12 Jan $ 933.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
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22 Dec - 09 Jan $ 1,000.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
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22 Dec - 11 Jan $ 1,014.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BOI
Boise
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Last minute flights from Boise to Seattle

22 Dec - 02 Jan $ 1,126.00
BOI
Boise
Allegiant Air
2 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
2 STOPS
BOI
Boise
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19 Dec - 01 Jan $ 2,046.00
BOI
Boise
Hawaiian Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Hawaiian Airlines
3 STOPS
BOI
Boise
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19 Dec - 01 Jan $ 2,212.00
BOI
Boise
Hawaiian Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Hawaiian Airlines
3 STOPS
BOI
Boise
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One-way flights to Seattle from Boise

10:41 PM - 4:05 PM
Air Excursions
2 Stops
19h 14m
BOI - BFI
$ 539
Kiwi
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9:06 PM - 7:35 AM
Air Excursions
3 Stops
36h 19m
BOI - BFI
$ 1,404
Kiwi
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9:06 PM - 5:35 AM
Air Excursions
3 Stops
34h 19m
BOI - BFI
$ 1,746
Kiwi
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How to find the cheapest flight from Boise (BOI) to Seattle (BFI)

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