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Cheap flights from Boston to Washington Dulles Intl (BOS - IAD)

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The best prices from Boston to Washington Dulles Intl are usually found in August or July, booked 24 days in advance, depart on a Saturday or Thursday and return on a Saturday

How to find the cheapest flight from
Boston (BOS) to Washington Dulles Intl (IAD)

BOS - IAD
Price
$161 - $256
IAD
Temperature
46.4 - 87.8 °F
IAD
Rainfall
2.5 - 4.4 inches

Popular in

October

High demand for flights, 17% potential price rise

Cheapest in

August

Best time to find cheap flights, 24% potential price drop

Round-trip from

$161

From Boston to Washington Dulles Intl

One-way from

$60

One-way flight from Boston to Washington Dulles Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Boston to Washington Dulles Intl?

Users have found that flying from Boston to Washington Dulles Intl on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Boston to Washington Dulles Intl?

Users have found that booking a flight from Boston to Washington Dulles Intl at least 31 days early can save you up to 111% on average compared to booking a flight this week. If booking 31 days before your flight isn’t an option for you, users have found flights from Boston to Washington Dulles Intl for as little as $235 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $341 for flights departing within the next 3 days.

What is the cheapest month to fly from Boston to Washington Dulles Intl?

April can be a great time to fly to Washington Dulles Intl from Boston with a flight ticket averaging about $172. Cheapflights users have found deals in the month of April for as cheap as $113. The most expensive prices can be found in the month of September.

When is the cheapest time to fly from Boston to Washington Dulles Intl (BOS - IAD)?

It’s typically best to fly out from Boston to Washington Dulles Intl in the morning. Doing so could potentially save you 20% on the flight price compared to flying in the evening, which is usually more expensive.

Cheap flights from Boston to Washington Dulles Intl in December, January 2021

The best prices found for BOS to IAD flights for December, January
14 Jan - 19 Jan
$97pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl
8 Jan - 11 Jan
$104pp
BOS
Boston Logan Intl
United Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl
11 Jan - 11 Jan
$105pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
 
1 STOP
BOS
Boston Logan Intl

Boston to Washington Dulles Intl 2021 flight deals

Cheap flights to Washington Dulles Intl from Boston found for this year
30 Dec - 6 Jan
$97pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl
31 Dec - 1 Jan
$106pp
BOS
Boston Logan Intl
Delta
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
BOS
Boston Logan Intl
16 Dec - 5 Jan
$107pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl

Non-stop flights to Washington Dulles Intl from Boston

Save time with Boston to Washington Dulles Intl direct flight deals
14 Jan - 19 Jan
$97pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl
16 Dec - 5 Jan
$107pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl
22 Dec - 31 Dec
$112pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl

Last minute flights from Boston to Washington Dulles Intl

Late deals on round-trip flights to Washington Dulles Intl from Boston, departing today and this week
13 Dec - 14 Dec
$128pp
BOS
Boston Logan Intl
United Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl
12 Dec - 22 Dec
$137pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl
9 Dec - 14 Dec
$147pp
BOS
Boston Logan Intl
United Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
BOS
Boston Logan Intl

One-way flights to Washington Dulles Intl from Boston

The cheapest one-way flights from Boston to Washington Dulles Intl
4:39 am - 6:25 am
Frontier
1 Stop
25h 46m
BOS - IAD
Frontier
$60
Kiwi.com
9:55 am - 11:29 am
United Airlines
Nonstop
1h 34m
BOS - IAD
United Airlines
$89
United
4:00 am - 10:41 am
Delta
1 Stop
6h 41m
BOS - IAD
Delta
$93
Delta

Related info for your journey

Useful info, stats and facts about Boston to Washington Dulles Intl flights.

Flight FAQs

From Boston to Washington Dulles Intl

Are flight prices decreasing from Boston to Washington Dulles Intl due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Boston and Washington Dulles Intl for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Boston Logan Intl to Washington Dulles Intl to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Delta is one of them. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially distanced seating (for a limited time) will work towards keeping travelers safer while flying from Boston Logan Intl to Washington Dulles Intl. Policies will vary by airline.

Which airlines flying from Boston Logan Intl to Washington Dulles Intl have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, JetBlue, and American Airlines flying from Boston Logan Intl to Washington Dulles Intl have implemented new flexible cancellation policies.

Can I find flights from Boston to Washington Dulles Intl for under $100 on Cheapflights?

Yes, there are multiple flights from Boston to Washington Dulles Intl for under $100. The cheapest flight booked recently is on United Airlines for just $97, but on average you can expect to pay $121.

Are there nonstop flights from Boston to Washington Dulles Intl for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to Washington Dulles Intl under $100. A good price for a nonstop flight from Boston to Washington Dulles Intl is less than $147.

Are there last-minute flights available from Boston to Washington Dulles Intl for under $200?

There are currently 20+ open flights from Boston to Washington Dulles Intl within the next 7 days for less than $200.

Does it rain more in Boston or Washington Dulles Intl?

When traveling, we recommend packing in preparation to handle common weather conditions. The rainfall in Boston is typically similar to Washington Dulles Intl. We can gather that this will continue over the next 14 days.

Is Boston weather warmer or cooler than Washington Dulles Intl?

You can imagine temperatures to be in the 88 °F range in July. The weather in Washington Dulles Intl is generally hotter than Boston's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

How long is the flight from Boston to Washington Dulles Intl?

For as low as $105, United Airlines can have you in Washington Dulles Intl from Boston in 1h 34m. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Boston to Washington Dulles Intl round-trip?

United Airlines, at $97, was found to be the cheapest airline from Boston to Washington Dulles Intl. An alternate airline flying to your destination would be Delta. United Airlines is currently priced 54% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Boston to Washington Dulles Intl one-way?

The cheapest airlines for a one-way flight from Boston to Washington Dulles Intl are United Airlines ($49), Delta ($53), and Frontier ($56).

Alternative routes for Boston to Washington Dulles Intl

Destination information for Washington Dulles Intl

Things to know before you go. Useful info for your trip from Boston to Washington Dulles Intl
Flight duration
1h 33m
Average temperature for December in Washington Dulles Intl
48.2 °F
Avg rainfall for December in Washington Dulles Intl
3.2 ″

Airports servicing Boston

Airports servicing Washington

Top 5 airlines from Boston to Washington Dulles Intl

The chart below displays the airlines Cheapflights users traveling from Boston to Washington Dulles Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
$77 $152 No cancel fee 65%
Delta
$80 $209 No cancel fee N/A
JetBlue
$117 $250 No cancel fee 62%
American Airlines
$92 $260 No cancel fee 71%
United Airlines
$147 $282 No cancel fee 69%

Hourly flight availability from Boston to Washington Dulles Intl

Morning 6 AM to noon 60% of BOS to IAD departures
Afternoon Noon to 6 PM 40% of BOS to IAD departures
Early morning Midnight to 6 AM 0% of BOS to IAD departures
Evening 6 PM to midnight 0% of BOS to IAD departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Boston to Washington Dulles Intl
Sunday
3 daily flights
Monday
3 daily flights
Tuesday
1 daily flight
Wednesday
3 daily flights
Thursday
7 daily flights
Friday
2 daily flights
Saturday
2 daily flights