Cheap flights from Boston to Blake Island from CA $133

View CA $133 flight on Wed, Dec. 3, 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

  • Sun Country Airlines

    Sun Country Airlines

  • United

    United

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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 $133 for one-way flights and CA $281 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Sep. 20 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $281 Roundtrip, found 2 days ago
CA $281
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Sep. 20 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $281 found 2 days ago
American Airlines
Tue, Sep. 16 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $282 Roundtrip, found 23 hours ago
CA $282
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Tue, Sep. 16 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $282 found 23 hours ago
JetBlue Airways
Thu, Oct. 2 - Tue, Oct. 7
BOS
Boston
SEA
Seattle
CA $294 Roundtrip, found 2 days ago
CA $294
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Thu, Oct. 2 from Boston to Seattle, returning Tue, Oct. 7, priced at CA $294 found 2 days ago
Alaska Airlines
Tue, Sep. 16 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $295 Roundtrip, found 23 hours ago
CA $295
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Tue, Sep. 16 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $295 found 23 hours ago
Delta
Tue, Sep. 16 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $295 Roundtrip, found 23 hours ago
CA $295
Roundtrip
found 23 hours ago
Select Delta flight, departing Tue, Sep. 16 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $295 found 23 hours ago
Hawaiian Airlines
Tue, Sep. 30 - Wed, Oct. 8
BOS
Boston
SEA
Seattle
CA $295 Roundtrip, found 2 days ago
CA $295
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Sep. 30 from Boston to Seattle, returning Wed, Oct. 8, priced at CA $295 found 2 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.