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
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Extremely Rare Availability
3% of dates checked are available within 10% of the lowest price
Sunday, October 4th, 2026
5 round-trip options
Returning
Fri, Oct 9, 2026•5 Day Trip
$387 USD
Returning
Sat, Oct 10, 2026•6 Day Trip
$352 USD
Returning
Sun, Oct 11, 2026•7 Day Trip
$462 USD
Returning
Mon, Oct 12, 2026•8 Day Trip
$387 USD
Returning
Fri, Oct 16, 2026•12 Day Trip
$387 USD