Seattle to Boston

SEABOS

Fly from Seattle to Boston starting at USD 150 with Southwest Airlines.Best fare available on Sep 2, 2026.Limited seats. Better plans. Book before it's gone.

Seattle to Boston cheapest flights this week

21 Aug
American Airlines
23:16SEA
09:10BOS
1 StopUSD 254VIEW DEAL
23 Aug
JetBlue Airways
23:45SEA
05:04BOS
DirectUSD 284VIEW DEAL
26 Aug
Alaska Airlines
10:19SEA
15:56BOS
DirectUSD 230VIEW DEAL
27 Aug
Alaska Airlines
15:29SEA
20:54BOS
DirectUSD 226VIEW DEAL
28 Aug
Alaska Airlines
23:06SEA
04:39BOS
DirectUSD 224VIEW DEAL
29 Aug
Alaska Airlines
23:06SEA
04:39BOS
DirectUSD 254VIEW DEAL
30 Aug
United Airlines
23:00SEA
06:36BOS
1 StopUSD 191VIEW DEAL
2 Sept
Southwest Airlines
08:30SEA
21:25BOS
1 StopUSD 150VIEW DEAL
2 Sept
Southwest Airlines
23:05SEA
06:00BOS
1 StopUSD 218VIEW DEAL
3 Sept
JetBlue Airways
11:40SEA
17:36BOS
DirectUSD 191VIEW DEAL

Seattle to Boston monthly flight fare trend

Aug
from USD 191
Sep
from USD 122
Oct
from USD 153
Nov
from USD 158
Dec
No flights
Jan
from USD 243

Airport Details

Origin

Seattle

Seattle–Tacoma International Airport (SEA)

Seattle, SEA
Zone

Los Angeles

Elev

433 ft

Destination

Boston

Logan International Airport (BOS)

Boston, BOS
Zone

New York

Elev

20 ft

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