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

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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 September , October 2026

30 Sep - 12 Oct $ 643.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
30 Sep - 29 Oct $ 644.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
30 Sep - 22 Oct $ 644.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates

Last minute flights from Phoenix to Seattle

23 Sep - 01 Oct $ 732.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
23 Sep - 01 Oct $ 734.00
PHX
Phoenix
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
20 Sep - 01 Oct $ 750.00
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

8:56 PM - 6:45 PM
Air Excursions
2 Stops
22h 39m
PHX - BFI
$ 351
Kiwi
Pick dates
8:56 PM - 4:05 PM
Air Excursions
2 Stops
19h 59m
PHX - BFI
$ 389
Kiwi
Pick dates
8:56 PM - 4:05 PM
Air Excursions
2 Stops
19h 59m
PHX - BFI
$ 389
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.