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Cheap flights from Washington, D.C. Dulles Intl Airport to Boston from £64

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOS
3 Sep — 10 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Boston

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Boston
Explore the most affordable flight options available from Dulles Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 August 2026.

Thu 20/817:28
IAD
-
BOS
Nonstop1h 51m
United Airlines
Thu 27/805:45
BOS
-
IAD
Nonstop1h 35m
United Airlines
Deal found 30/7£109
Sat 5/922:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Mon 7/907:30
BOS
-
IAD
1 stop3h 56m
United Airlines
Deal found 3/8£111
Mon 24/822:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Wed 26/805:45
BOS
-
IAD
Nonstop1h 35m
United Airlines
Deal found 3/8£112
Sat 29/806:15
IAD
-
BOS
1 stop3h 37m
United Airlines
Sat 29/819:23
BOS
-
IAD
Nonstop1h 45m
United Airlines
Deal found 30/7£117
Sat 12/911:12
IAD
-
BOS
1 stop23h 46m
Frontier
Tue 22/912:52
BOS
-
IAD
1 stop11h 18m
Frontier
Deal found 1/8£118
Thu 1/1022:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Sat 3/1019:13
BOS
-
IAD
Nonstop1h 45m
United Airlines
Deal found 30/7£119
Mon 24/806:16
IAD
-
BOS
1 stop5h 01m
United Airlines
Mon 24/819:23
BOS
-
IAD
Nonstop1h 45m
United Airlines
Deal found 31/7£120
Wed 2/922:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Sun 6/909:30
BOS
-
IAD
Nonstop1h 41m
United Airlines
Deal found 30/7£122
Thu 3/906:16
IAD
-
BOS
1 stop3h 32m
United Airlines
Sun 6/909:30
BOS
-
IAD
Nonstop1h 41m
United Airlines
Deal found 2/8£123
Sat 5/922:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Sun 6/907:30
BOS
-
IAD
1 stop3h 56m
United Airlines
Deal found 3/8£125
Sat 17/1022:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Sun 18/1006:00
BOS
-
IAD
1 stop5h 25m
United Airlines
Deal found 30/7£126

Find flight deals from Dulles Intl to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 4 August 2026.

Round-trip from

£109

One-way from

£64

Popular in

June

Cheapest in

January

Average price

£250
United Airlines
  • United Airlines
  • 20/8-27/8
  • Nonstop
  • 3h 26m total
  • Washington, D.C. to Boston
Search Deals
United Airlines
  • United Airlines
  • 16/12
  • 1 total stop
  • 4h 39m total
  • Washington, D.C. to Boston
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£41 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Dulles Intl to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 August 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Wed 16/9

22:15-23:59

Nonstop1h 44m

Boston Logan Intl

Thu 17/9

05:45-07:20

Nonstop1h 35m

£112

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Wed 23/9

22:15-23:59

Nonstop1h 44m

Boston Logan Intl

Sun 27/9

05:45-07:20

Nonstop1h 35m

£112

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Thu 10/9

08:35-14:22

1 stop5h 47m

Boston Logan Intl

Mon 14/9

05:45-07:20

Nonstop1h 35m

£117

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Mon 24/8

06:16-09:48

1 stop3h 32m

Boston Logan Intl

Sat 29/8

07:30-11:26

1 stop3h 56m

£127

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 12/9

13:05-14:50

Nonstop1h 45m

Boston Logan Intl

Tue 15/9

05:45-07:20

Nonstop1h 35m

£139

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Mon 19/10

22:25-00:09

Nonstop1h 44m

Boston Logan Intl

Mon 26/10

05:30-07:10

Nonstop1h 40m

£143

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 5/9

22:15-23:59

Nonstop1h 44m

Boston Logan Intl

Tue 8/9

05:45-07:20

Nonstop1h 35m

£153

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Thu 3/9

06:16-12:47

1 stop6h 31m

Boston Logan Intl

Sun 6/9

05:45-07:20

Nonstop1h 35m

£159

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 12/9

08:35-10:18

Nonstop1h 43m

Boston Logan Intl

Tue 22/9

19:23-21:08

Nonstop1h 45m

£166

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Tue 15/9

22:15-23:59

Nonstop1h 44m

Boston Logan Intl

Sat 19/9

05:45-07:20

Nonstop1h 35m

£166

Flights are sorted by cheapest return flights first.

Deals found on 3/8

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Dulles Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Boston

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Boston?

The best time to book flights from Washington, D.C. Dulles Intl Airport to Boston is 72 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.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Boston?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of £158). Flying from Washington, D.C. Dulles Intl Airport to Boston in June is currently the most expensive (average of £316). 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.

What is the cheapest time of day to fly from IAD to BOS?

Find hourly flight availability from Dulles Intl to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 August 2026.

When flying from Washington, D.C. Dulles Intl Airport to Boston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to Boston?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Boston flights typically cost between £187 and £291 in August.
The cheapest return price found within the last 5 days was £109 on United Airlines (20 Aug–22 Aug).

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Boston from Washington, D.C. Dulles Intl?

    Most people fly into Boston Logan Intl (BOS) if they book a flight to Boston from Washington, D.C. Dulles Intl. On average, Logan Intl has 16 inbound flights from Washington, D.C. Dulles Intl per day from 0 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Boston?

    Airlines like United Airlines fly from Washington, D.C. Dulles Intl Airport to Boston in about 1h 44m. The time it takes to get you to your destination is usually consistent. There are 411 mi between Washington, D.C. Dulles Intl Airport and Boston. All flights are typically direct.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Boston?

    Before booking your flight to Boston from Washington, D.C. Dulles Intl Airport, check out the most reliable airlines to get you to your destination on time: Egyptair (85%), Avianca (84%), Republic Airways( 78%).

  • Can I find deals for flights from Dulles Intl to Boston that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Boston flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Boston.

  • Can I find deals for business class flights from Dulles Intl to Boston?

    Yes. Cheapflights offers flight deals from Dulles Intl to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Boston?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of £158). Flying from Washington, D.C. Dulles Intl Airport to Boston in June is currently the most expensive (average of £316). 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.

See more FAQs

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Burlington
Canton
North Truro
Waltham
Warwick
Cambridge
Peabody
Wellfleet
Revere
Somerville
Quincy
Chelmsford

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Alternative routes for Dulles Intl to Boston

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Cheapflights makes it easy to find Dulles Intl to Boston flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Boston?

Millions of users choose and trust Cheapflights to book the best flight deals from Dulles Intl to Boston for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Dulles Intl to Boston with no change fees?

Yes, we can. To see specific flights from Dulles Intl to Boston with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Dulles Intl to Boston become cheaper?

Yes! Start tracking prices for Dulles Intl to Boston flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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