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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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOS
17 May — 24 May1
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 17 April 2026.

Mon 18/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Tue 19/505:45
BOS
-
IAD
Nonstop1h 39m
United Airlines
Deal found 16/4£128
Fri 22/506:33
IAD
-
BOS
1 stop4h 43m
United Airlines
Tue 26/505:45
BOS
-
IAD
Nonstop1h 38m
United Airlines
Deal found 13/4£130
Thu 7/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Sun 10/505:45
BOS
-
IAD
Nonstop1h 39m
United Airlines
Deal found 17/4£131
Sat 2/508:35
IAD
-
BOS
Nonstop1h 43m
United Airlines
Wed 6/505:45
BOS
-
IAD
Nonstop1h 39m
United Airlines
Deal found 13/4£132
Tue 26/506:33
IAD
-
BOS
1 stop4h 43m
United Airlines
Tue 2/605:45
BOS
-
IAD
Nonstop1h 38m
United Airlines
Deal found 14/4£134
Mon 11/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Tue 12/519:26
BOS
-
IAD
1 stop3h 59m
United Airlines
Deal found 13/4£134
Sat 9/508:20
IAD
-
BOS
1 stop4h 31m
United Airlines
Wed 13/505:45
BOS
-
IAD
Nonstop1h 39m
United Airlines
Deal found 16/4£135
Wed 29/408:22
IAD
-
BOS
Nonstop1h 42m
United Airlines
Mon 4/505:45
BOS
-
IAD
Nonstop1h 39m
United Airlines
Deal found 14/4£137
Mon 11/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Fri 15/505:45
BOS
-
IAD
Nonstop1h 39m
United Airlines
Deal found 13/4£137
Fri 8/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Mon 11/505:45
BOS
-
IAD
Nonstop1h 39m
United Airlines
Deal found 17/4£138
Wed 20/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Mon 25/519:00
BOS
-
IAD
1 stop4h 19m
United Airlines
Deal found 13/4£139
Mon 4/522:15
IAD
-
BOS
Nonstop1h 44m
United Airlines
Tue 5/515:32
BOS
-
IAD
1 stop5h 39m
United Airlines
Deal found 14/4£140

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 17 April 2026.

Round-trip from

£128

One-way from

£66

Popular in

May

Cheapest in

January

Average price

£229

Good round-trip deal

£324 or less
United Airlines
  • United Airlines
  • 18/5-19/5
  • Nonstop
  • 3h 23m total
  • Washington, D.C. to Boston
Search Deals
United Airlines
  • United Airlines
  • 7/5
  • Nonstop
  • 1h 44m total
  • Washington, D.C. to Boston
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£13 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 April 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 17 April 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
Fastest return journey

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Wed 6/5

12:43-14:26

Nonstop1h 43m

Boston Logan Intl

Wed 13/5

05:45-07:24

Nonstop1h 39m

£141

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sun 3/5

22:15-23:59

Nonstop1h 44m

Boston Logan Intl

Mon 4/5

05:45-07:24

Nonstop1h 39m

£141

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Thu 30/4

08:35-10:18

Nonstop1h 43m

Boston Logan Intl

Fri 1/5

05:45-07:24

Nonstop1h 39m

£141

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 30/5

06:33-09:53

1 stop3h 20m

Boston Logan Intl

Tue 2/6

09:30-11:12

Nonstop1h 42m

£160

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Wed 2/9

08:29-12:47

1 stop4h 18m

Boston Logan Intl

Sun 6/9

19:00-22:59

1 stop3h 59m

£163

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 4/7

06:33-09:53

1 stop3h 20m

Boston Logan Intl

Sat 18/7

05:45-07:23

Nonstop1h 38m

£175

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Thu 16/7

22:10-23:59

Nonstop1h 49m

Boston Logan Intl

Mon 27/7

06:00-11:28

1 stop5h 28m

£181

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Fri 28/8

06:15-09:53

1 stop3h 38m

Boston Logan Intl

Sun 30/8

05:45-07:20

Nonstop1h 35m

£181

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Tue 16/6

12:58-14:43

Nonstop1h 45m

Boston Logan Intl

Thu 18/6

05:45-07:23

Nonstop1h 38m

£183

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Fri 1/5

08:20-13:51

1 stop5h 31m

Boston Logan Intl

Sun 3/5

05:45-07:24

Nonstop1h 39m

£189

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 19 resultsSorted by cheapest first
1
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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?

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Boston. Price data was last updated on 10 April 2026.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Boston is 85 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 £252). 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 17 April 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 1h 43m. 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: 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 £190.

  • 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 £252). 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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Fly with Cheapflights

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How does Cheapflights help users find flights from Dulles Intl to Boston?

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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