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Cheap flights from Denver (DEN) 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 Denver (DEN) to Seattle (BFI)

How to find the cheapest flight from Denver (DEN) to Seattle (BFI)
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How to find the cheapest flight from Denver (DEN) to Seattle (BFI)
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How to find the cheapest flight from Denver (DEN) to Seattle (BFI)
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Cheap flights from Denver to Seattle in April , May 2026

29 Apr - 26 May $ 585.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
28 Apr - 26 May $ 585.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
28 Apr - 18 May $ 596.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates

Last minute flights from Denver to Seattle

29 Apr - 30 Apr $ 596.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
28 Apr - 30 Apr $ 596.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
21 Apr - 30 Apr $ 652.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
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One-way flights to Seattle from Denver

10:00 AM - 2:45 PM
Air Excursions
1 Stops
6h 35m
DEN - BFI
$ 292
Kiwi
Pick dates
10:00 AM - 2:45 PM
Air Excursions
1 Stops
6h 35m
DEN - BFI
$ 292
Kiwi
Pick dates
10:00 AM - 2:45 PM
Air Excursions
1 Stops
6h 35m
DEN - BFI
$ 348
Kiwi
Pick dates

How to find the cheapest flight from Denver (DEN) to Seattle (BFI)

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