Washington to Boston

IADBOS

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

Washington to Boston cheapest flights this week

11 Jun
Frontier Airlines
20:57IAD
07:52BOS
1 Stop$205VIEW DEAL
21 Jun
Allegiant Air
21:51IAD
11:44BOS
1 Stop$175VIEW DEAL
22 Jun
United Airlines
22:10IAD
23:59BOS
Direct$123VIEW DEAL
18 Aug
United Airlines
22:15IAD
23:59BOS
Direct$79VIEW DEAL
29 Sept
United Airlines
08:35IAD
10:17BOS
Direct$93VIEW DEAL

Washington to Boston monthly flight fare trend

Jun
from USD 48
Jul
No flights
Aug
from USD 79
Sep
from USD 93
Oct
No flights
Nov
No flights

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

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