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
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Limited Availability
10% of dates checked are available within 10% of the lowest price
Thursday, August 20th, 2026
6 round-trip options
Returning
Tue, Aug 25, 2026•5 Day Trip
$332 USD
Returning
Fri, Aug 28, 2026•8 Day Trip
$361 USD
Returning
Sun, Aug 30, 2026•10 Day Trip
$433 USD
Returning
Mon, Aug 31, 2026•11 Day Trip
$361 USD
Returning
Tue, Sep 1, 2026•12 Day Trip
$332 USD
Returning
Thu, Sep 3, 2026•14 Day Trip
$361 USD