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Cheap flights from Boston (BOS) 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 Boston (BOS) to Seattle (BFI)

How to find the cheapest flight from Boston (BOS) to Seattle (BFI)
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How to find the cheapest flight from Boston (BOS) to Seattle (BFI)
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How to find the cheapest flight from Boston (BOS) to Seattle (BFI)
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Cheap flights from Boston to Seattle in November , December 2026

23 Nov - 14 Dec $ 825.00
BOS
Boston
JetBlue Airways
3 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
2 STOPS
BOS
Boston
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23 Nov - 08 Dec $ 825.00
BOS
Boston
JetBlue Airways
3 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
2 STOPS
BOS
Boston
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23 Nov - 15 Dec $ 825.00
BOS
Boston
JetBlue Airways
3 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
2 STOPS
BOS
Boston
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Last minute flights from Boston to Seattle

23 Nov - 01 Dec $ 1,008.00
BOS
Boston
Porter Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Porter Airlines
3 STOPS
BOS
Boston
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23 Nov - 01 Dec $ 1,050.00
BOS
Boston
Porter Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Porter Airlines
3 STOPS
BOS
Boston
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23 Nov - 01 Dec $ 1,087.00
BOS
Boston
Porter Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Porter Airlines
3 STOPS
BOS
Boston
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One-way flights to Seattle from Boston

11:06 AM - 9:25 PM
Air Excursions
3 Stops
38h 9m
BOS - BFI
$ 416
Kiwi
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2:40 PM - 9:25 PM
Air Excursions
3 Stops
34h 35m
BOS - BFI
$ 458
Kiwi
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6:55 PM - 9:25 PM
Air Excursions
3 Stops
30h 20m
BOS - BFI
$ 495
Kiwi
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How to find the cheapest flight from Boston (BOS) to Seattle (BFI)

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