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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 September , October 2026

24 Sep - 12 Oct $ 715.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates
17 Sep - 12 Oct $ 728.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates
17 Sep - 23 Oct $ 728.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates

Last minute flights from Boise to Seattle

24 Sep - 02 Oct $ 758.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates
17 Sep - 02 Oct $ 772.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates
27 Sep - 02 Oct $ 784.00
BOI
Boise
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
BOI
Boise
Pick dates

One-way flights to Seattle from Boise

2:50 PM - 6:45 PM
Air Excursions
2 Stops
29h 45m
BOI - BFI
$ 385
Kiwi
Pick dates
2:50 PM - 4:05 PM
Air Excursions
2 Stops
27h 5m
BOI - BFI
$ 398
Kiwi
Pick dates
2:50 PM - 6:45 PM
Air Excursions
2 Stops
29h 45m
BOI - BFI
$ 405
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.