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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 June , July 2026

30 Jun - 10 Jul $ 679.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
30 Jun - 31 Jul $ 679.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
30 Jun - 16 Jul $ 679.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
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Last minute flights from Denver to Seattle

26 Jun - 30 Jun $ 719.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
29 Jun - 30 Jun $ 741.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
23 Jun - 30 Jun $ 768.00
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

2:50 PM - 6:45 PM
Air Excursions
1 Stops
5h 45m
DEN - BFI
$ 364
Kiwi
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3:10 PM - 8:25 PM
Air Excursions
1 Stops
7h 5m
DEN - BFI
$ 365
Kiwi
Pick dates
3:10 PM - 9:25 PM
Air Excursions
1 Stops
8h 5m
DEN - BFI
$ 387
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.