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

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

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

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

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Cheap flights from Seattle to Philadelphia in December 2025 , January 2026

24 Dec - 08 Jan $ 968.00

BFI

Seattle

Air Excursions

3 STOPS

PHL

Philadelphia

PHL

Philadelphia

Air Excursions

3 STOPS

BFI

Seattle

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24 Dec - 11 Jan $ 968.00

BFI

Seattle

Air Excursions

3 STOPS

PHL

Philadelphia

PHL

Philadelphia

Air Excursions

3 STOPS

BFI

Seattle

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31 Dec - 08 Jan $ 1,007.00

BFI

Seattle

Air Excursions

3 STOPS

PHL

Philadelphia

PHL

Philadelphia

Air Excursions

3 STOPS

BFI

Seattle

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Last minute flights from Seattle to Philadelphia

24 Dec - 02 Jan $ 1,201.00

BFI

Seattle

Air Excursions

2 STOPS

PHL

Philadelphia

PHL

Philadelphia

Air Excursions

3 STOPS

BFI

Seattle

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24 Dec - 02 Jan $ 1,220.00

BFI

Seattle

Air Excursions

3 STOPS

PHL

Philadelphia

PHL

Philadelphia

Air Excursions

3 STOPS

BFI

Seattle

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24 Dec - 02 Jan $ 1,254.00

BFI

Seattle

Air Excursions

3 STOPS

PHL

Philadelphia

PHL

Philadelphia

Air Excursions

3 STOPS

BFI

Seattle

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One-way flights to Philadelphia from Seattle

7:45 PM - 11:59 PM
Frontier Airlines

2 Stops

30h 46m
BFI - PHL

$ 525
Kiwi

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8:05 AM - 8:00 AM
Frontier Airlines

3 Stops

23h 26m
BFI - PHL

$ 544
Kiwi

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9:35 AM - 8:00 AM
Frontier Airlines

3 Stops

21h 56m
BFI - PHL

$ 583
Kiwi

Pick dates

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

Related info for your journey

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

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 Seattle (BFI) to Philadelphia (PHL)

Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.