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Cheap flights from Buffalo (BUF) to Seattle (BFI)

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How to find the cheapest flight from Buffalo (BUF) to Seattle (BFI)

How to find the cheapest flight from Buffalo (BUF) to Seattle (BFI)
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How to find the cheapest flight from Buffalo (BUF) to Seattle (BFI)
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How to find the cheapest flight from Buffalo (BUF) to Seattle (BFI)
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Cheap flights from Buffalo to Seattle in December 2025 , January 2026

25 Dec - 09 Jan $ 1,269.00
BUF
Buffalo
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BUF
Buffalo
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28 Dec - 09 Jan $ 1,337.00
BUF
Buffalo
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BUF
Buffalo
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23 Dec - 09 Jan $ 1,406.00
BUF
Buffalo
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BUF
Buffalo
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Last minute flights from Buffalo to Seattle

25 Dec - 01 Jan $ 1,474.00
BUF
Buffalo
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BUF
Buffalo
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28 Dec - 01 Jan $ 1,543.00
BUF
Buffalo
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BUF
Buffalo
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23 Dec - 01 Jan $ 1,615.00
BUF
Buffalo
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
BUF
Buffalo
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One-way flights to Seattle from Buffalo

7:58 PM - 5:35 AM
Air Excursions
3 Stops
37h 27m
BUF - BFI
$ 836
Kiwi
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5:40 PM - 7:35 AM
Air Excursions
3 Stops
41h 45m
BUF - BFI
$ 966
Kiwi
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5:40 PM - 6:45 PM
Air Excursions
3 Stops
28h 55m
BUF - BFI
$ 1,022
Kiwi
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How to find the cheapest flight from Buffalo (BUF) to Seattle (BFI)

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