Seattle / Tacoma (SEA) to Boston (BOS) flight deal in economy from $303
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
BOSLogan International Airport
Boston, United States
$421 USD
-28%$303 USD
Verified 1 day agoOctober 2026
Mon
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Limited Availability
10% of dates checked are available within 10% of the lowest price
Monday, October 26th, 2026
3 round-trip options
Returning
Tue, Nov 3, 2026•8 Day Trip
$359 USD
Returning
Thu, Nov 5, 2026•10 Day Trip
$361 USD
Returning
Fri, Nov 6, 2026•11 Day Trip
$361 USD