Boston (BOS) to Seattle / Tacoma (SEA) flight deal in economy from $347
BOSLogan International Airport
Boston, United States
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$418 USD
-17%$347 USD
Verified about 21 hours agoJanuary 2027
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Good Availability
59% of dates checked are available within 10% of the lowest price
Monday, January 18th, 2027
2 round-trip options
Returning
Sat, Jan 23, 2027•5 Day Trip
$400 USD
Returning
Fri, Jan 29, 2027•11 Day Trip
$397 USD