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Cheap flights from Washington, D.C. Dulles Intl Airport to Boston from £66

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 30/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOS
31 May — 7 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Boston Logan Intl are usually found in January or December, booked 85 days in advance, depart on a Monday or Tuesday and return on a Tuesday

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 1 May 2026.

Tue 16/608:35
IAD
-
BOS
Nonstop1h 45m
United Airlines
Tue 16/619:27
BOS
-
IAD
Nonstop1h 49m
United Airlines
Deal found 29/4£126
Mon 18/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Tue 26/505:45
BOS
-
IAD
Nonstop1h 38m
United Airlines
Deal found 29/4£127
Wed 17/622:10
IAD
-
BOS
Nonstop1h 49m
United Airlines
Tue 23/605:45
BOS
-
IAD
Nonstop1h 38m
United Airlines
Deal found 26/4£129
Tue 26/522:10
IAD
-
BOS
Nonstop1h 49m
United Airlines
Wed 27/519:27
BOS
-
IAD
Nonstop1h 49m
United Airlines
Deal found 1/5£129
Thu 28/522:10
IAD
-
BOS
Nonstop1h 49m
United Airlines
Thu 4/605:45
BOS
-
IAD
Nonstop1h 38m
United Airlines
Deal found 28/4£131
Wed 20/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Sun 24/505:45
BOS
-
IAD
Nonstop1h 38m
United Airlines
Deal found 29/4£132
Tue 26/506:33
IAD
-
BOS
1 stop4h 43m
United Airlines
Tue 9/619:27
BOS
-
IAD
Nonstop1h 49m
United Airlines
Deal found 26/4£134
Wed 10/612:35
IAD
-
BOS
1 stop5h 22m
United Airlines
Tue 16/609:30
BOS
-
IAD
Nonstop1h 42m
United Airlines
Deal found 30/4£135
Tue 19/512:43
IAD
-
BOS
Nonstop1h 43m
United Airlines
Tue 19/519:26
BOS
-
IAD
1 stop3h 59m
United Airlines
Deal found 27/4£136
Thu 14/508:20
IAD
-
BOS
1 stop5h 31m
United Airlines
Wed 27/509:30
BOS
-
IAD
Nonstop1h 42m
United Airlines
Deal found 28/4£137

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 1 May 2026.

Round-trip from

£126

One-way from

£66

Popular in

May

Cheapest in

January

Average price

£249

Good round-trip deal

£324 or less
United Airlines
  • United Airlines
  • 16/6-16/6
  • Nonstop
  • 3h 34m total
  • Washington, D.C. to Boston
Search Deals
United Airlines
  • United Airlines
  • 30/5
  • Nonstop
  • 1h 49m total
  • Washington, D.C. to Boston
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Boston Logan Intl.
Search Deals

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 1 May 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

Tue 9/6

08:35-10:20

Nonstop1h 45m

Boston Logan Intl

Tue 16/6

09:30-11:12

Nonstop1h 42m

£153

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Tue 30/6

17:42-21:55

1 stop4h 13m

Boston Logan Intl

Wed 1/7

09:25-11:07

Nonstop1h 42m

£160

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Thu 21/5

06:33-09:53

1 stop3h 20m

Boston Logan Intl

Tue 26/5

16:15-21:00

1 stop4h 45m

£160

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 15/8

22:10-23:54

Nonstop1h 44m

Boston Logan Intl

Sat 22/8

07:35-11:26

1 stop3h 51m

£168
Fastest return journey

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Tue 12/5

22:15-23:59

Nonstop1h 44m

Boston Logan Intl

Tue 19/5

05:45-07:24

Nonstop1h 39m

£168

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Tue 9/6

22:10-23:59

Nonstop1h 49m

Boston Logan Intl

Wed 17/6

05:45-07:23

Nonstop1h 38m

£169

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Thu 21/5

06:33-11:16

1 stop4h 43m

Boston Logan Intl

Sun 24/5

19:00-23:19

1 stop4h 19m

£175

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Thu 16/7

06:33-11:16

1 stop4h 43m

Boston Logan Intl

Sat 18/7

05:45-07:23

Nonstop1h 38m

£180

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 16/5

22:15-23:59

Nonstop1h 44m

Boston Logan Intl

Mon 18/5

19:26-23:25

1 stop3h 59m

£184

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Fri 31/7

06:33-11:16

1 stop4h 43m

Boston Logan Intl

Wed 5/8

06:00-11:28

1 stop5h 28m

£187

Flights are sorted by cheapest return flights first.

Deals found on 26/4

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 84 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 May is currently the most expensive (average of £249). 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 1 May 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?

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 13 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 4h 43m. The time it takes to get you to your destination can typically vary by up to . There are 411 mi between Washington, D.C. Dulles Intl Airport and Boston.

  • 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: ITA Airways (93%), Ethiopian Air (89%), Avianca( 89%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Boston?

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Boston is £216. On average you can expect to pay £324. The most popular route, (Washington, D.C. Dulles Intl - Boston Logan Intl), can usually be booked for £199.

  • 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 May is currently the most expensive (average of £249). 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
Waltham
Warwick
Cambridge
Peabody
Somerville
Quincy
Chelmsford

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Alternative routes for Dulles Intl to Boston

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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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