Boston to Seattle

BOSSEA

Fly from Boston to Seattle starting at USD 135 with American Airlines.Best fare available on Aug 18, 2026.Limited seats. Better plans. Book before it's gone.

Boston to Seattle cheapest flights this week

14 Aug
JetBlue Airways
07:09BOS
13:30SEA
DirectUSD 188VIEW DEAL
14 Aug
Alaska Airlines
15:26BOS
21:45SEA
DirectUSD 241VIEW DEAL
15 Aug
Frontier Airlines
08:37BOS
12:04SEA
2 StopUSD 260VIEW DEAL
17 Aug
Alaska Airlines
19:44BOS
02:07SEA
DirectUSD 183VIEW DEAL
17 Aug
American Airlines
17:07BOS
01:56SEA
1 StopUSD 195VIEW DEAL
18 Aug
American Airlines
17:40BOS
02:50SEA
1 StopUSD 135VIEW DEAL
18 Aug
Alaska Airlines
07:03BOS
13:26SEA
DirectUSD 230VIEW DEAL
19 Aug
Alaska Airlines
19:59BOS
02:12SEA
DirectUSD 175VIEW DEAL
19 Aug
Alaska Airlines
07:12BOS
13:25SEA
DirectUSD 199VIEW DEAL
30 Aug
JetBlue Airways
07:09BOS
13:30SEA
DirectUSD 200VIEW 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 196
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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