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 agoAugust 2026
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Extremely Rare Availability
3% of dates checked are available within 10% of the lowest price
Saturday, August 8th, 2026
6 round-trip options
Returning
Thu, Aug 13, 2026•5 Day Trip
$632 USD
Returning
Mon, Aug 17, 2026•9 Day Trip
$707 USD
Returning
Tue, Aug 18, 2026•10 Day Trip
$707 USD
Returning
Wed, Aug 19, 2026•11 Day Trip
$667 USD
Returning
Fri, Aug 21, 2026•13 Day Trip
$707 USD
Returning
Sat, Aug 22, 2026•14 Day Trip
$707 USD