Boston to Washington

BOSIAD

Fly from Boston to Washington starting at USD 100 with United Airlines.Best fare available on Aug 22, 2026.Limited seats. Better plans. Book before it's gone.

Boston to Washington cheapest flights this week

19 Aug
United Airlines
09:30BOS
11:11IAD
DirectUSD 134VIEW DEAL
20 Aug
Frontier Airlines
12:45BOS
22:52IAD
1 StopUSD 125VIEW DEAL
20 Aug
Frontier Airlines
09:36BOS
17:14IAD
1 StopUSD 181VIEW DEAL
21 Aug
United Airlines
19:23BOS
21:08IAD
DirectUSD 137VIEW DEAL
22 Aug
United Airlines
18:00BOS
22:59IAD
1 StopUSD 100VIEW DEAL
22 Aug
Frontier Airlines
12:45BOS
22:52IAD
1 StopUSD 153VIEW DEAL
24 Aug
United Airlines
09:30BOS
11:11IAD
DirectUSD 118VIEW DEAL
24 Aug
Frontier Airlines
09:36BOS
17:14IAD
1 StopUSD 163VIEW DEAL
25 Aug
Frontier Airlines
12:45BOS
22:52IAD
1 StopUSD 152VIEW DEAL
28 Aug
United Airlines
19:23BOS
21:08IAD
DirectUSD 148VIEW DEAL

Boston to Washington monthly flight fare trend

Aug
from USD 100
Sep
from USD 50
Oct
from USD 61
Nov
No flights
Dec
from USD 77
Jan
No flights

Airport Details

Origin

Boston

Logan International Airport (BOS)

Boston, BOS
Zone

New York

Elev

20 ft

Destination

Washington

Washington Dulles International Airport (IAD)

Dulles, IAD
Zone

New York

Elev

312 ft

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