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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 July , August 2026

29 Jul - 25 Aug $ 791.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
29 Jul - 26 Aug $ 791.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
28 Jul - 25 Aug $ 791.00
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 Jul - 31 Jul $ 1,080.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
28 Jul - 31 Jul $ 1,080.00
DEN
Denver
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
DEN
Denver
Pick dates
27 Jul - 31 Jul $ 1,082.00
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

2:55 PM - 6:45 PM
Air Excursions
1 Stops
5h 40m
DEN - BFI
$ 542
Kiwi
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2:50 PM - 6:45 PM
Air Excursions
1 Stops
5h 45m
DEN - BFI
$ 542
Kiwi
Pick dates
3:08 PM - 8:25 PM
Air Excursions
1 Stops
7h 7m
DEN - BFI
$ 542
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.