Seattle to Boston
SEABOS
Fly from Seattle to Boston starting at USD 141 with AA.
Best fare available on Aug 11, 2026.
Limited seats. Better plans. Book before it's gone.
Seattle to Boston cheapest flights this week
27 Apr
AA
18:40SEA
--:--BOS
1 Stop$254VIEW DEAL
2 May
AA
13:19SEA
--:--BOS
1 Stop$156VIEW DEAL
9 May
AA
23:55SEA
--:--BOS
1 Stop$146VIEW DEAL
1 Jun
UA
23:00SEA
--:--BOS
1 Stop$155VIEW DEAL
11 Aug
AA
07:40SEA
--:--BOS
1 Stop$141VIEW DEAL
12 Aug
UA
22:47SEA
--:--BOS
1 Stop$143VIEW DEAL
15 Aug
AA
23:16SEA
--:--BOS
1 Stop$206VIEW DEAL
Seattle to Boston monthly flight fare trend
Apr
from USD 254
May
from USD 146
Jun
from USD 155
Jul
No flights
Aug
from USD 141
Sep
No flights
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
