Boston to Seattle

BOSSEA

Fly from Boston to Seattle starting at USD 157 with Alaska Airlines.Best fare available on Aug 4, 2026.Limited seats. Better plans. Book before it's gone.

Boston to Seattle cheapest flights this week

3 Aug
American Airlines
17:38BOS
03:59SEA
1 StopUSD 243VIEW DEAL
3 Aug
JetBlue Airways
19:29BOS
01:54SEA
DirectUSD 324VIEW DEAL
4 Aug
Alaska Airlines
19:44BOS
02:07SEA
DirectUSD 157VIEW DEAL
5 Aug
American Airlines
07:00BOS
19:32SEA
1 StopUSD 209VIEW DEAL
5 Aug
JetBlue Airways
08:10BOS
02:04SEA
1 StopUSD 222VIEW DEAL
5 Aug
Alaska Airlines
07:03BOS
13:26SEA
DirectUSD 242VIEW DEAL
5 Aug
JetBlue Airways
07:09BOS
13:32SEA
DirectUSD 300VIEW DEAL
6 Aug
Southwest Airlines
18:40BOS
02:55SEA
1 StopUSD 270VIEW DEAL
6 Aug
JetBlue Airways
06:00BOS
12:04SEA
2 StopUSD 250VIEW DEAL
6 Aug
JetBlue Airways
07:02BOS
12:04SEA
3 StopUSD 256VIEW DEAL

Boston to Seattle monthly flight fare trend

Aug
from USD 135
Sep
from USD 158
Oct
from USD 152
Nov
No flights
Dec
from USD 215
Jan
from USD 208

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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