Boston to Washington

BOSIAD

Fly from Boston to Washington starting at USD 79 with United Airlines.Best fare available on Aug 18, 2026.Limited seats. Better plans. Book before it's gone.

Boston to Washington cheapest flights this week

12 Jun
Frontier Airlines
12:01BOS
23:22IAD
1 Stop$191VIEW DEAL
16 Jun
United Airlines
05:45BOS
07:23IAD
Direct$167VIEW DEAL
19 Jun
United Airlines
19:27BOS
21:16IAD
Direct$142VIEW DEAL
29 Jul
United Airlines
05:45BOS
07:23IAD
Direct$85VIEW DEAL
11 Aug
United Airlines
05:45BOS
07:20IAD
Direct$111VIEW DEAL
18 Aug
United Airlines
05:45BOS
07:20IAD
Direct$79VIEW DEAL
27 Sept
United Airlines
05:45BOS
07:20IAD
Direct$165VIEW DEAL
29 Sept
United Airlines
09:30BOS
11:10IAD
Direct$93VIEW DEAL
15 Dec
American Airlines
18:36BOS
00:01IAD
1 Stop$150VIEW DEAL

Boston to Washington monthly flight fare trend

Jun
from USD 49
Jul
from USD 85
Aug
from USD 79
Sep
from USD 93
Oct
No flights
Nov
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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