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Cheap flights from Philadelphia (PHL) to Seattle (BFI)

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How to find the cheapest flight from Philadelphia (PHL) to Seattle (BFI)

How to find the cheapest flight from Philadelphia (PHL) to Seattle (BFI)
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How to find the cheapest flight from Philadelphia (PHL) to Seattle (BFI)
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How to find the cheapest flight from Philadelphia (PHL) to Seattle (BFI)
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Cheap flights from Philadelphia to Seattle in June , July 2026

29 Jun - 25 Jul $ 1,026.00
PHL
Philadelphia
Sun Country Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Sun Country Airlines
2 STOPS
PHL
Philadelphia
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30 Jun - 25 Jul $ 1,028.00
PHL
Philadelphia
Sun Country Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Sun Country Airlines
2 STOPS
PHL
Philadelphia
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17 Jun - 25 Jul $ 1,066.00
PHL
Philadelphia
Sun Country Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Sun Country Airlines
2 STOPS
PHL
Philadelphia
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Last minute flights from Philadelphia to Seattle

29 Jun - 01 Jul $ 1,053.00
PHL
Philadelphia
JetBlue Airways
3 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
2 STOPS
PHL
Philadelphia
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24 Jun - 01 Jul $ 1,081.00
PHL
Philadelphia
JetBlue Airways
3 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
2 STOPS
PHL
Philadelphia
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17 Jun - 01 Jul $ 1,092.00
PHL
Philadelphia
JetBlue Airways
2 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
2 STOPS
PHL
Philadelphia
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One-way flights to Seattle from Philadelphia

6:30 AM - 9:25 PM
Air Excursions
3 Stops
18h 45m
PHL - BFI
$ 546
Kiwi
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8:30 AM - 9:25 PM
Air Excursions
3 Stops
16h 45m
PHL - BFI
$ 548
Kiwi
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12:06 PM - 9:25 PM
Air Excursions
2 Stops
13h 9m
PHL - BFI
$ 585
Kiwi
Pick dates

How to find the cheapest flight from Philadelphia (PHL) to Seattle (BFI)

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