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Cheap flights from Phoenix (PHX) 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 Phoenix (PHX) to Seattle (BFI)

How to find the cheapest flight from Phoenix (PHX) to Seattle (BFI)
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How to find the cheapest flight from Phoenix (PHX) to Seattle (BFI)
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How to find the cheapest flight from Phoenix (PHX) to Seattle (BFI)
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Cheap flights from Phoenix to Seattle in December 2025 , January 2026

24 Dec - 15 Jan $ 814.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
PHX
Phoenix
Pick dates
24 Dec - 11 Jan $ 814.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
PHX
Phoenix
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24 Dec - 08 Jan $ 866.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
PHX
Phoenix
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Last minute flights from Phoenix to Seattle

24 Dec - 31 Dec $ 855.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
PHX
Phoenix
Pick dates
26 Dec - 31 Dec $ 855.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
PHX
Phoenix
Pick dates
22 Dec - 31 Dec $ 889.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
1 STOPS
PHX
Phoenix
Pick dates

One-way flights to Seattle from Phoenix

1:00 PM - 5:25 PM
Air Excursions
1 Stops
6h 15m
PHX - BFI
$ 450
Kiwi
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5:49 PM - 7:35 AM
Air Excursions
1 Stops
15h 36m
PHX - BFI
$ 458
Kiwi
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5:49 PM - 6:45 AM
Air Excursions
1 Stops
14h 46m
PHX - BFI
$ 484
Kiwi
Pick dates

How to find the cheapest flight from Phoenix (PHX) to Seattle (BFI)

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