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

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1 Adults (11+)
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 June , July 2026

29 Jun - 06 Jul $ 816.00
BOS
Boston
JetBlue Airways
1 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
1 STOPS
BOS
Boston
Pick dates
29 Jun - 30 Jul $ 816.00
BOS
Boston
JetBlue Airways
1 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
1 STOPS
BOS
Boston
Pick dates
29 Jun - 16 Jul $ 816.00
BOS
Boston
JetBlue Airways
1 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
1 STOPS
BOS
Boston
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Last minute flights from Boston to Seattle

29 Jun - 01 Jul $ 816.00
BOS
Boston
JetBlue Airways
1 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
1 STOPS
BOS
Boston
Pick dates
29 Jun - 30 Jun $ 827.00
BOS
Boston
JetBlue Airways
1 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
1 STOPS
BOS
Boston
Pick dates
26 Jun - 30 Jun $ 888.00
BOS
Boston
JetBlue Airways
1 STOPS
BFI
Seattle
BFI
Seattle
JetBlue Airways
1 STOPS
BOS
Boston
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One-way flights to Seattle from Boston

9:57 AM - 4:05 PM
Air Excursions
1 Stops
9h 58m
BOS - BFI
$ 430
Kiwi
Pick dates
7:19 PM - 9:25 AM
Air Excursions
1 Stops
17h 56m
BOS - BFI
$ 430
Kiwi
Pick dates
9:57 AM - 4:05 PM
Air Excursions
1 Stops
9h 58m
BOS - BFI
$ 491
Kiwi
Pick dates

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.