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Cheap flights from Idaho Falls (IDA) 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 Idaho Falls (IDA) to Seattle (BFI)

How to find the cheapest flight from Idaho Falls (IDA) to Seattle (BFI)
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How to find the cheapest flight from Idaho Falls (IDA) to Seattle (BFI)
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How to find the cheapest flight from Idaho Falls (IDA) to Seattle (BFI)
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Cheap flights from Idaho Falls to Seattle in December 2025 , January 2026

26 Dec - 05 Jan $ 941.00
IDA
Idaho Falls
Allegiant Air
1 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
1 STOPS
IDA
Idaho Falls
Pick dates
26 Dec - 02 Jan $ 1,011.00
IDA
Idaho Falls
Allegiant Air
1 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
1 STOPS
IDA
Idaho Falls
Pick dates
29 Dec - 02 Jan $ 1,035.00
IDA
Idaho Falls
Allegiant Air
1 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
1 STOPS
IDA
Idaho Falls
Pick dates

Last minute flights from Idaho Falls to Seattle

22 Dec - 02 Jan $ 998.00
IDA
Idaho Falls
Allegiant Air
1 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
2 STOPS
IDA
Idaho Falls
Pick dates
26 Dec - 02 Jan $ 1,035.00
IDA
Idaho Falls
Allegiant Air
1 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
2 STOPS
IDA
Idaho Falls
Pick dates
29 Dec - 02 Jan $ 1,060.00
IDA
Idaho Falls
Allegiant Air
1 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
2 STOPS
IDA
Idaho Falls
Pick dates

One-way flights to Seattle from Idaho Falls

4:26 PM - 6:45 AM
Air Excursions
1 Stops
16h 9m
IDA - BFI
$ 440
Kiwi
Pick dates
1:26 PM - 6:45 PM
Air Excursions
1 Stops
7h 9m
IDA - BFI
$ 487
Kiwi
Pick dates
1:26 PM - 5:25 PM
Air Excursions
1 Stops
5h 49m
IDA - BFI
$ 512
Kiwi
Pick dates

How to find the cheapest flight from Idaho Falls (IDA) to Seattle (BFI)

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