Flights From Boston (BOS) to SeaTac (SEA)

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Selected fares from Boston to SeaTac

The cheapest prices found with in the last 7 days for return flights were CA $226 and CA $170 for one-way flights to SeaTac for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Wed., 26 Mar. - Tue., 22 Apr.
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
CA $226 Roundtrip, found 6 days ago
CA $226
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Wed., 26 Mar. from Logan Intl. to Seattle - Tacoma Intl., returning Tue., 22 Apr., priced at CA $226 found 6 days ago
Alaska Airlines
Wed., 14 May - Sat., 17 May
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
CA $341 Roundtrip, found 18 hours ago
CA $341
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Wed., 14 May from Logan Intl. to Seattle - Tacoma Intl., returning Sat., 17 May, priced at CA $341 found 18 hours ago
Delta
Sun., 6 Apr. - Fri., 11 Apr.
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
CA $372 Roundtrip, found 3 days ago
CA $372
Roundtrip
found 3 days ago
Select Delta flight, departing Sun., 6 Apr. from Logan Intl. to Seattle - Tacoma Intl., returning Fri., 11 Apr., priced at CA $372 found 3 days ago