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Cheap flights from Kalispell (FCA) to Seattle (BFI)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Kalispell (FCA) to Seattle (BFI)

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

23 Dec - 01 Feb $ 1,001.00
FCA
Kalispell
Allegiant Air
3 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
2 STOPS
FCA
Kalispell
Pick dates
23 Dec - 29 Jan $ 1,032.00
FCA
Kalispell
Allegiant Air
3 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
2 STOPS
FCA
Kalispell
Pick dates
23 Dec - 22 Jan $ 1,088.00
FCA
Kalispell
Allegiant Air
3 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
2 STOPS
FCA
Kalispell
Pick dates

One-way flights to Seattle from Kalispell

5:55 PM - 5:25 PM
Air Excursions
3 Stops
25h 20m
FCA - BFI
$ 601
Kiwi
Pick dates
9:53 PM - 6:45 AM
Air Excursions
3 Stops
34h 42m
FCA - BFI
$ 654
Kiwi
Pick dates
5:55 PM - 5:45 PM
Air Excursions
2 Stops
25h 40m
FCA - BFI
$ 765
Kiwi
Pick dates

How to find the cheapest flight from Kalispell (FCA) to Seattle (BFI)

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