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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 August , September 2026

27 Aug - 25 Sep $ 752.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BOI
Boise
Pick dates
27 Aug - 03 Sep $ 767.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates
27 Aug - 08 Sep $ 787.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BOI
Boise
Pick dates

Last minute flights from Boise to Seattle

27 Aug - 01 Sep $ 788.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates
20 Aug - 01 Sep $ 858.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates
27 Aug - 01 Sep $ 952.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BOI
Boise
Pick dates

One-way flights to Seattle from Boise

12:24 PM - 11:15 AM
Air Excursions
2 Stops
24h 41m
BOI - BFI
$ 366
Kiwi
Pick dates
12:24 PM - 9:25 PM
Air Excursions
2 Stops
10h 51m
BOI - BFI
$ 416
Kiwi
Pick dates
12:24 PM - 9:25 PM
Air Excursions
2 Stops
10h 51m
BOI - BFI
$ 480
Kiwi
Pick dates

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.