Seattle to Boston

SEABOS

Fly from Seattle to Boston starting at USD 148 with Alaska Airlines.Best fare available on Jul 15, 2026.Limited seats. Better plans. Book before it's gone.

Seattle to Boston cheapest flights this week

15 Jul
United Airlines
13:55SEA
22:14BOS
1 StopUSD 164VIEW DEAL
15 Jul
Southwest Airlines
05:00SEA
15:00BOS
1 StopUSD 200VIEW DEAL
15 Jul
Alaska Airlines
23:18SEA
04:40BOS
DirectUSD 148VIEW DEAL
16 Jul
American Airlines
05:10SEA
15:01BOS
1 StopUSD 230VIEW DEAL
16 Jul
Alaska Airlines
15:36SEA
20:59BOS
DirectUSD 240VIEW DEAL
16 Jul
Alaska Airlines
15:36SEA
20:59BOS
DirectUSD 251VIEW DEAL
21 Jul
Alaska Airlines
15:36SEA
20:59BOS
DirectUSD 211VIEW DEAL
22 Jul
American Airlines
05:10SEA
15:04BOS
1 StopUSD 196VIEW DEAL
22 Jul
United Airlines
10:29SEA
22:11BOS
1 StopUSD 201VIEW DEAL
26 Jul
JetBlue Airways
23:46SEA
05:04BOS
DirectUSD 244VIEW DEAL

Seattle to Boston monthly flight fare trend

Jul
from USD 148
Aug
from USD 141
Sep
No flights
Oct
No flights
Nov
No flights
Dec
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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