Cheap flights from Boston to Blake Island

View AU$166 flight on Wed, 29 Oct. 2025Opens in a new window

Popular airlines from Boston to Blake Island

  • American Airlines

    American Airlines

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 35% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 20 Aug. - Wed, 27 Aug.
BOS
Boston
SEA
Seattle
AU$407 Return, found 6 hours ago
AU$407
Return
found 6 hours ago
Select American Airlines flight, departing Wed, 20 Aug. from Boston to Seattle, returning Wed, 27 Aug., priced at AU$407 found 6 hours ago
American Airlines
Wed, 20 Aug. - Wed, 27 Aug.
BOS
Boston
SEA
Seattle
AU$445 Return, found 6 hours ago
AU$445
Return
found 6 hours ago
Select American Airlines flight, departing Wed, 20 Aug. from Boston to Seattle, returning Wed, 27 Aug., priced at AU$445 found 6 hours ago
American Airlines
Wed, 13 Aug. - Wed, 20 Aug.
BOS
Boston
SEA
Seattle
AU$447 Return, found 6 days ago
AU$447
Return
found 6 days ago
Select American Airlines flight, departing Wed, 13 Aug. from Boston to Seattle, returning Wed, 20 Aug., priced at AU$447 found 6 days ago
Delta
Wed, 20 Aug. - Wed, 27 Aug.
BOS
Boston
SEA
Seattle
AU$469 Return, found 6 hours ago
AU$469
Return
found 6 hours ago
Select Delta flight, departing Wed, 20 Aug. from Boston to Seattle, returning Wed, 27 Aug., priced at AU$469 found 6 hours ago
Alaska Airlines
Mon, 18 Aug. - Mon, 25 Aug.
BOS
Boston
SEA
Seattle
AU$490 Return, found 2 days ago
AU$490
Return
found 2 days ago
Select Alaska Airlines flight, departing Mon, 18 Aug. from Boston to Seattle, returning Mon, 25 Aug., priced at AU$490 found 2 days ago
United
Wed, 20 Aug. - Wed, 27 Aug.
BOS
Boston
SEA
Seattle
AU$559 Return, found 6 hours ago
AU$559
Return
found 6 hours ago
Select United flight, departing Wed, 20 Aug. from Boston to Seattle, returning Wed, 27 Aug., priced at AU$559 found 6 hours ago

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

March is typically the cheapest month to fly

From AU$237 - AU$466 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.