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Cheap flights from Phoenix (PHX) 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 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 July , August 2026

30 Jul - 24 Aug $ 731.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
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30 Jul - 31 Aug $ 731.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
30 Jul - 13 Aug $ 763.00
PHX
Phoenix
Allegiant Air
1 STOPS
BFI
Seattle
BFI
Seattle
Allegiant Air
1 STOPS
PHX
Phoenix
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Last minute flights from Phoenix to Seattle

30 Jul - 31 Jul $ 879.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
30 Jul - 31 Jul $ 886.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
Pick dates
23 Jul - 31 Jul $ 942.00
PHX
Phoenix
Frontier Airlines
1 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
PHX
Phoenix
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One-way flights to Seattle from Phoenix

3:04 PM - 9:25 PM
Air Excursions
1 Stops
7h 11m
PHX - BFI
$ 419
Kiwi
Pick dates
11:19 AM - 6:45 PM
Air Excursions
2 Stops
8h 16m
PHX - BFI
$ 470
Kiwi
Pick dates
3:04 PM - 9:25 PM
Air Excursions
1 Stops
7h 11m
PHX - BFI
$ 481
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.