For quick check-in at IAD, locate your airline counter in the main terminal's island setup. Be prepared for crowded afternoon and evening hours.

Most accurate provider | Justfly.com 3 stars |
|---|---|
Most trusted provider | Justfly.com 3 stars |
Round-trip from | $142 (Priceline) |
One-way from | $76 (Trip.com) |
Popular in | October |
Cheapest in | January |
Average price | $207 |
Good round-trip deal | $169 or less |
Good one-way deal | $113 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Boston
DCA - BOS
DCABOS
Washington, D.C. Reagan-National
Sat 1/24
2:25 pm-4:07 pm
Nonstop1h 42m
Boston Logan Intl
Tue 1/27
5:50 pm-7:52 pm
Nonstop2h 02m
Washington, D.C.Boston
IAD - BOS
IADBOS
Washington, D.C. Dulles Intl
Tue 1/13
12:40 pm-2:17 pm
Nonstop1h 37m
Boston Logan Intl
Tue 1/13
7:07 pm-8:53 pm
Nonstop1h 46m
Washington, D.C.Boston
DCA - BOS
DCABOS
Washington, D.C. Reagan-National
Sat 1/24
9:30 am-11:05 am
Nonstop1h 35m
Boston Logan Intl
Sat 1/31
11:55 am-1:53 pm
Nonstop1h 58m
Washington, D.C.Boston
IAD - BOS
IADBOS
Washington, D.C. Dulles Intl
Wed 1/14
12:40 pm-2:17 pm
Nonstop1h 37m
Boston Logan Intl
Wed 1/14
7:07 pm-8:53 pm
Nonstop1h 46m
Washington, D.C.Boston
DCA - BOS
DCABOS
Washington, D.C. Reagan-National
Sat 1/24
3:25 pm-5:00 pm
Nonstop1h 35m
Boston Logan Intl
Mon 1/26
8:00 am-9:51 am
Nonstop1h 51m
Washington, D.C.Boston
DCA - BOS
DCABOS
Washington, D.C. Reagan-National
Wed 1/14
6:55 pm-8:29 pm
Nonstop1h 34m
Boston Logan Intl
Sun 1/18
11:30 am-1:20 pm
Nonstop1h 50m
Washington, D.C.Boston
DCA - BOS
DCABOS
Washington, D.C. Reagan-National
Sat 1/31
5:00 pm-6:43 pm
Nonstop1h 43m
Boston Logan Intl
Sun 2/1
7:35 am-9:39 am
Nonstop2h 04m
Washington, D.C.Boston
IAD - BOS
IADBOS
Washington, D.C. Dulles Intl
Tue 1/13
10:12 pm-11:49 pm
Nonstop1h 37m
Boston Logan Intl
Mon 1/26
9:30 am-11:16 am
Nonstop1h 46m
Washington, D.C.Boston
IAD - BOS
IADBOS
Washington, D.C. Dulles Intl
Tue 1/20
8:29 am-1:13 pm
1 stop4h 44m
Boston Logan Intl
Tue 1/27
2:20 pm-4:06 pm
Nonstop1h 46m
Washington, D.C.Boston
IAD - BOS
IADBOS
Washington, D.C. Dulles Intl
Sat 1/24
10:12 pm-11:49 pm
Nonstop1h 37m
Boston Logan Intl
Sat 1/31
7:21 pm-11:13 pm
1 stop3h 52m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
The best time to book flights from Washington, D.C. to Boston is 30 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Boston (average of $43). Flying from Washington, D.C. to Boston in September is currently the most expensive (average of $114). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Boston in the evening. If you’re flexible enough to do this you can expect to save up to 46% on your trip compared to booking a flight in the afternoon.
Travelers seeking maximum savings on their Washington, D.C. to Boston flight should consider departing on Monday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from WAS to BOS are scheduled on a Monday (68 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (29 on average).
About 18% of weekly flights between Washington, D.C. and Boston have experienced delays in the past year, with the average delay time being 131 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Delta have had the lowest number of delays on this route, with just 15% of flights being delayed.
Crew
Entertainment
Boarding
Food
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Overall
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Entertainment
Boarding
Food
Comfort
Overall
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Entertainment
Boarding
Food
Comfort
Overall
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Entertainment
Boarding
Food
Comfort
Overall
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Entertainment
Boarding
Food
Comfort
Overall
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Entertainment
Boarding
Food
Comfort
Overall
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$47 | Average$121 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$78 | Average$238 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$125 | Average$233 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$141 | Average$238 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$143 | Average$258 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$270 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$161 | Average$269 | FlexibilityNo cancel fee | On-time63% |