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Cheap flights from Denver (DEN) 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 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 March , April 2026

23 Mar - 15 Apr $ 682.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
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23 Mar - 28 Apr $ 682.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
23 Mar - 14 Apr $ 682.00
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

9:10 AM - 2:45 PM
Air Excursions
1 Stops
7h 25m
DEN - BFI
$ 341
Kiwi
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9:10 AM - 2:45 PM
Air Excursions
1 Stops
7h 25m
DEN - BFI
$ 403
Kiwi
Pick dates
9:10 AM - 3:05 PM
Air Excursions
1 Stops
7h 45m
DEN - BFI
$ 409
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.