Boston to Seattle

BOSSEA

Fly from Boston to Seattle starting at USD 150 with Alaska Airlines.Best fare available on Sep 8, 2026.Limited seats. Better plans. Book before it's gone.

Boston to Seattle cheapest flights this week

6 Sept
Alaska Airlines
15:31BOS
21:44SEA
DirectUSD 187VIEW DEAL
6 Sept
Alaska Airlines
07:12BOS
13:25SEA
DirectUSD 242VIEW DEAL
8 Sept
WestJet
18:30BOS
18:52SEA
2 StopUSD 250VIEW DEAL
8 Sept
Alaska Airlines
07:12BOS
13:25SEA
DirectUSD 150VIEW DEAL
9 Sept
American Airlines
06:30BOS
18:57SEA
1 StopUSD 270VIEW DEAL
10 Sept
Alaska Airlines
19:59BOS
02:12SEA
DirectUSD 235VIEW DEAL
10 Sept
Alaska Airlines
07:12BOS
13:25SEA
DirectUSD 262VIEW DEAL
12 Sept
Alaska Airlines
16:48BOS
23:01SEA
DirectUSD 243VIEW DEAL
13 Sept
Alaska Airlines
19:59BOS
02:12SEA
DirectUSD 153VIEW DEAL
15 Sept
Alaska Airlines
19:59BOS
02:12SEA
DirectUSD 197VIEW DEAL

Boston to Seattle monthly flight fare trend

Sep
from USD 138
Oct
from USD 127
Nov
from USD 257
Dec
from USD 196
Jan
from USD 208
Feb
from USD 227

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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