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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 April , May 2026

19 Apr - 29 May $ 916.00
IDA
Idaho Falls
Allegiant Air
2 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
1 STOPS
IDA
Idaho Falls
Pick dates
19 Apr - 29 May $ 950.00
IDA
Idaho Falls
Allegiant Air
2 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
1 STOPS
IDA
Idaho Falls
Pick dates
19 Apr - 25 May $ 953.00
IDA
Idaho Falls
Allegiant Air
2 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
1 STOPS
IDA
Idaho Falls
Pick dates

Last minute flights from Idaho Falls to Seattle

20 Apr - 01 May $ 882.00
IDA
Idaho Falls
Allegiant Air
3 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
3 STOPS
IDA
Idaho Falls
Pick dates
24 Apr - 01 May $ 898.00
IDA
Idaho Falls
Allegiant Air
3 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
3 STOPS
IDA
Idaho Falls
Pick dates
19 Apr - 01 May $ 1,022.00
IDA
Idaho Falls
Allegiant Air
2 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
3 STOPS
IDA
Idaho Falls
Pick dates

One-way flights to Seattle from Idaho Falls

10:21 PM - 4:05 PM
Air Excursions
3 Stops
43h 34m
IDA - BFI
$ 438
Kiwi
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10:21 PM - 3:05 PM
Air Excursions
3 Stops
42h 34m
IDA - BFI
$ 454
Kiwi
Pick dates
9:59 AM - 6:45 AM
Air Excursions
2 Stops
22h 36m
IDA - BFI
$ 578
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.