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
9 May
AA
23:55SEA
10:11BOS
1 Stop$146VIEW DEAL
1 Jun
UA
23:00SEA
08:16BOS
1 Stop$155VIEW DEAL
11 Aug
AA
07:40SEA
16:42BOS
1 Stop$141VIEW DEAL
12 Aug
UA
22:47SEA
06:23BOS
1 Stop$143VIEW DEAL
15 Aug
AA
23:16SEA
09:10BOS
1 Stop$206VIEW DEAL
Seattle to Boston monthly flight fare trend
May
from USD 146
Jun
from USD 155
Jul
No flights
Aug
from USD 141
Sep
No flights
Oct
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
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