Cheap flights from Boston to Centralia - Chehalis from CA $114

View CA $114 flight on Sun, Sep. 14, 2025Opens in a new window

Popular airlines from Boston to Centralia - Chehalis

  • Alaska Airlines

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  • American Airlines

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  • Delta

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  • United

    United

  • Sun Country Airlines

    Sun Country Airlines

  • Hawaiian Airlines

    Hawaiian Airlines

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Cheap flights from Boston (BOS) to Centralia - Chehalis (SEA)

Prices were available within the past 7 days and start at CA $114 for one-way flights and CA $282 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Sep. 16 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $282 Roundtrip, found 6 days ago
CA $282
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Sep. 16 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $282 found 6 days ago
American Airlines
Tue, Sep. 16 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $284 Roundtrip, found 6 days ago
CA $284
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Sep. 16 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $284 found 6 days ago
Alaska Airlines
Tue, Sep. 16 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $295 Roundtrip, found 6 days ago
CA $295
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Sep. 16 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $295 found 6 days ago
JetBlue Airways
Tue, Sep. 16 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $295 Roundtrip, found 6 days ago
CA $295
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Tue, Sep. 16 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $295 found 6 days ago
Delta
Tue, Sep. 16 - Tue, Sep. 23
BOS
Boston
SEA
Seattle
CA $295 Roundtrip, found 6 days ago
CA $295
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Sep. 16 from Boston to Seattle, returning Tue, Sep. 23, priced at CA $295 found 6 days ago
Hawaiian Airlines
Tue, Sep. 23 - Sun, Sep. 28
BOS
Boston
SEA
Seattle
CA $352 Roundtrip, found 20 hours ago
CA $352
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Tue, Sep. 23 from Boston to Seattle, returning Sun, Sep. 28, priced at CA $352 found 20 hours ago

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

September is typically the cheapest month to fly

From CA $211 - CA $334 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.