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

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0 Children (2~11)
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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 August , September 2026

25 Aug - 17 Sep $ 674.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
26 Aug - 17 Sep $ 674.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
25 Aug - 14 Sep $ 689.00
PHX
Phoenix
BREEZE
2 STOPS
BFI
Seattle
BFI
Seattle
BREEZE
2 STOPS
PHX
Phoenix
Pick dates

Last minute flights from Phoenix to Seattle

26 Aug - 31 Aug $ 771.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
25 Aug - 31 Aug $ 771.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
28 Aug - 31 Aug $ 792.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates

One-way flights to Seattle from Phoenix

8:35 AM - 9:25 PM
Air Excursions
2 Stops
13h 40m
PHX - BFI
$ 378
Kiwi
Pick dates
11:21 AM - 9:25 PM
Air Excursions
2 Stops
10h 54m
PHX - BFI
$ 394
Kiwi
Pick dates
11:21 AM - 9:25 PM
Air Excursions
2 Stops
10h 54m
PHX - BFI
$ 394
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.