Boston (BOS) to Seattle / Tacoma (SEA) flight deal in economy from $273
BOSLogan International Airport
Boston, United States
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$464 USD
-41%$273 USD
Verified about 4 hours agoAugust 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Limited Availability
10% of dates checked are available within 10% of the lowest price
Sunday, August 16th, 2026
1 round-trip options
Returning
Sat, Aug 22, 2026•6 Day Trip
$540 USD