Washington to Boston

IADBOS

Fly from Washington to Boston starting at USD 120 with United Airlines.Best fare available on Jul 22, 2026.Limited seats. Better plans. Book before it's gone.

Washington to Boston cheapest flights this week

19 Jul
United Airlines
22:10IAD
23:59BOS
DirectUSD 131VIEW DEAL
21 Jul
Frontier Airlines
20:33IAD
07:46BOS
1 StopUSD 138VIEW DEAL
22 Jul
United Airlines
22:10IAD
23:59BOS
DirectUSD 120VIEW DEAL
23 Jul
United Airlines
12:55IAD
14:40BOS
DirectUSD 210VIEW DEAL
24 Jul
Frontier Airlines
20:33IAD
07:42BOS
1 StopUSD 152VIEW DEAL
24 Jul
United Airlines
22:10IAD
23:59BOS
DirectUSD 132VIEW DEAL
31 Jul
Frontier Airlines
20:33IAD
07:42BOS
1 StopUSD 156VIEW DEAL
1 Aug
United Airlines
15:30IAD
17:24BOS
DirectUSD 137VIEW DEAL
1 Aug
United Airlines
22:10IAD
23:59BOS
DirectUSD 120VIEW DEAL
2 Aug
United Airlines
08:35IAD
10:20BOS
DirectUSD 130VIEW DEAL

Washington to Boston monthly flight fare trend

Jul
from USD 120
Aug
from USD 71
Sep
from USD 93
Oct
No flights
Nov
No flights
Dec
from USD 136

Airport Details

Origin

Washington

Washington Dulles International Airport (IAD)

Dulles, IAD
Zone

New York

Elev

312 ft

Destination

Boston

Logan International Airport (BOS)

Boston, BOS
Zone

New York

Elev

20 ft

Flights from Washington

Flights from Washington to AtlantaFlights from Washington to AustinFlights from Washington to CharlotteFlights from Washington to DenverFlights from Washington to DallasFlights from Washington to DetroitFlights from Washington to NewarkFlights from Washington to Fort LauderdaleFlights from Washington to HonoluluFlights from Washington to Houston