Cheap flights from Washington to Blake Island from CA $104

View CA $104 flight on Thu, Sep. 18, 2025Opens in a new window

Popular airlines from Washington to Blake Island

  • Alaska Airlines

    Alaska Airlines

  • American Airlines

    American Airlines

  • Delta

    Delta

  • JetBlue Airways

    JetBlue Airways

  • United

    United

  • Hawaiian Airlines

    Hawaiian Airlines

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Cheap flights from Washington (WAS) to Blake Island (SEA)

Prices were available within the past 7 days and start at CA $104 for one-way flights and CA $208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Oct. 16 - Wed, Oct. 22
BWI
Baltimore
SEA
Seattle
CA $208 Roundtrip, found 1 day ago
CA $208
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Oct. 16 from Baltimore to Seattle, returning Wed, Oct. 22, priced at CA $208 found 1 day ago
American Airlines
Fri, Sep. 5 - Mon, Sep. 8
BWI
Baltimore
SEA
Seattle
CA $214 Roundtrip, found 1 day ago
CA $214
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Sep. 5 from Baltimore to Seattle, returning Mon, Sep. 8, priced at CA $214 found 1 day ago
American Airlines
Thu, Oct. 16 - Wed, Oct. 22
BWI
Baltimore
SEA
Seattle
CA $216 Roundtrip, found 1 day ago
CA $216
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct. 16 from Baltimore to Seattle, returning Wed, Oct. 22, priced at CA $216 found 1 day ago
Delta
Fri, Sep. 5 - Mon, Sep. 8
BWI
Baltimore
SEA
Seattle
CA $310 Roundtrip, found 1 day ago
CA $310
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Sep. 5 from Baltimore to Seattle, returning Mon, Sep. 8, priced at CA $310 found 1 day ago
Hawaiian Airlines
Sat, Sep. 6 - Sat, Sep. 20
DCA
Washington
SEA
Seattle
CA $376 Roundtrip, found 4 days ago
CA $376
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Sat, Sep. 6 from Washington to Seattle, returning Sat, Sep. 20, priced at CA $376 found 4 days ago
Frontier Airlines
Tue, Jul. 22 - Wed, Jul. 23
DCA
Washington
SEA
Seattle
CA $434 Roundtrip, just found
CA $434
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jul. 22 from Washington to Seattle, returning Wed, Jul. 23, priced at CA $434 just found

Find the cheapest month to fly from Washington (WAS) to Seattle (SEA)

September is typically the cheapest month to fly

From CA $188 - CA $359 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.