Boston (BOS) to Seattle / Tacoma (SEA) flight deal in economy from $317
BOSLogan International Airport
Boston, United States
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$447 USD
-29%$317 USD
Verified 16 days agoOctober 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Extremely Rare Availability
3% of dates checked are available within 10% of the lowest price
Thursday, October 1st, 2026
5 round-trip options
Returning
Tue, Oct 6, 2026•5 Day Trip
$352 USD
Returning
Wed, Oct 7, 2026•6 Day Trip
$352 USD
Returning
Thu, Oct 8, 2026•7 Day Trip
$422 USD
Returning
Fri, Oct 9, 2026•8 Day Trip
$387 USD
Returning
Tue, Oct 13, 2026•12 Day Trip
$352 USD