Cheap flights from Boston to Blake Island from CA $148

View CA $148 flight on Wed, Sep. 17, 2025Opens in a new window

Popular airlines from Boston to Blake Island

  • Alaska Airlines

    Alaska Airlines

  • JetBlue Airways

    JetBlue Airways

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Hawaiian Airlines

    Hawaiian Airlines

  • Sun Country Airlines

    Sun Country Airlines

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Cheap flights from Boston (BOS) to Blake Island (SEA)

Prices were available within the past 7 days and start at CA $148 for one-way flights and CA $295 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Sep. 9 - Wed, Sep. 24
BOS
Boston
SEA
Seattle
CA $295 Roundtrip, found 20 hours ago
CA $295
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Tue, Sep. 9 from Boston to Seattle, returning Wed, Sep. 24, priced at CA $295 found 20 hours ago
Hawaiian Airlines
Tue, Sep. 9 - Sat, Sep. 20
BOS
Boston
SEA
Seattle
CA $295 Roundtrip, found 20 hours ago
CA $295
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Tue, Sep. 9 from Boston to Seattle, returning Sat, Sep. 20, priced at CA $295 found 20 hours ago
Delta
Sat, Sep. 6 - Tue, Sep. 16
BOS
Boston
SEA
Seattle
CA $296 Roundtrip, found 3 days ago
CA $296
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep. 6 from Boston to Seattle, returning Tue, Sep. 16, priced at CA $296 found 3 days ago
JetBlue Airways
Tue, Oct. 14 - Wed, Oct. 22
BOS
Boston
SEA
Seattle
CA $296 Roundtrip, found 6 days ago
CA $296
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Tue, Oct. 14 from Boston to Seattle, returning Wed, Oct. 22, priced at CA $296 found 6 days ago
JetBlue Airways
Sat, Oct. 4 - Sat, Oct. 11
BOS
Boston
SEA
Seattle
CA $297 Roundtrip, found 3 days ago
CA $297
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Sat, Oct. 4 from Boston to Seattle, returning Sat, Oct. 11, priced at CA $297 found 3 days ago
American Airlines
Sat, Sep. 6 - Tue, Sep. 16
BOS
Boston
SEA
Seattle
CA $322 Roundtrip, found 3 days ago
CA $322
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Sep. 6 from Boston to Seattle, returning Tue, Sep. 16, priced at CA $322 found 3 days ago

Find the cheapest month to fly from Boston (BOS) to Seattle (SEA)

March is typically the cheapest month to fly

From CA $213 - CA $419 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.