Boston (BOS) to Seattle / Tacoma (SEA) flight deal in economy from $303
BOSLogan International Airport
Boston, United States
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$417 USD
-27%$303 USD
Verified 1 day agoAugust 2026
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Limited Availability
10% of dates checked are available within 10% of the lowest price
Sunday, August 30th, 2026
6 round-trip options
Returning
Fri, Sep 4, 2026•5 Day Trip
$361 USD
Returning
Mon, Sep 7, 2026•8 Day Trip
$361 USD
Returning
Wed, Sep 9, 2026•10 Day Trip
$332 USD
Returning
Thu, Sep 10, 2026•11 Day Trip
$361 USD
Returning
Fri, Sep 11, 2026•12 Day Trip
$354 USD
Returning
Sun, Sep 13, 2026•14 Day Trip
$361 USD