Boston to Seattle
BOSSEA
Fly from Boston to Seattle starting at USD 167 with Alaska Airlines.
Best fare available on Jul 22, 2026.
Limited seats. Better plans. Book before it's gone.
Boston to Seattle cheapest flights this week
Boston to Seattle monthly flight fare trend
Jul
from USD 167
Aug
from USD 135
Sep
from USD 158
Oct
No flights
Nov
No flights
Dec
No flights
Airport Details
Origin
Boston
Logan International Airport (BOS)
Boston, BOS
Zone
New York
Elev
20 ft
Destination
Seattle
Seattle–Tacoma International Airport (SEA)
Seattle, SEA
Zone
Los Angeles
Elev
433 ft
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