Boston to Seattle
BOSSEA
Fly from Boston to Seattle starting at USD 157 with American Airlines.
Best fare available on Oct 20, 2026.
Limited seats. Better plans. Book before it's gone.
Boston to Seattle cheapest flights this week
Boston to Seattle monthly flight fare trend
Oct
from USD 127
Nov
from USD 257
Dec
from USD 196
Jan
from USD 208
Feb
from USD 227
Mar
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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