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Cheap flights from Washington, D.C. Dulles Intl Airport to Boston from £58

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOS
20 Aug — 27 Aug1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Boston Logan Intl are usually found in January or March, booked 54 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap 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 15 August 2025.

Round-trip from

£108

One-way from

£58

Popular in

May

Cheapest in

January

Average price

£237
United Airlines
  • United Airlines
  • 3/9-3/9
  • 1 total stop
  • 5h 43m total
  • Washington, D.C. to Boston
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United Airlines
  • United Airlines
  • 4/9
  • 1 total stop
  • 5h 29m total
  • Washington, D.C. to Boston
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£11 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Dulles Intl to Boston

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 15 August 2025.

Wed 3/908:55IAD - BOS
Nonstop1h 40mUnited Airlines
Wed 3/918:56BOS - IAD
1 stop4h 03mUnited Airlines
Deal found 13/8£108
Wed 3/922:18IAD - BOS
Nonstop1h 39mUnited Airlines
Wed 10/907:10BOS - IAD
1 stop4h 45mUnited Airlines
Deal found 13/8£109
Mon 15/908:40IAD - BOS
1 stop4h 44mUnited Airlines
Thu 18/905:30BOS - IAD
Nonstop1h 40mUnited Airlines
Deal found 13/8£110
Thu 4/906:20IAD - BOS
1 stop3h 26mUnited Airlines
Fri 5/905:30BOS - IAD
Nonstop1h 40mUnited Airlines
Deal found 13/8£112
Fri 17/1006:15IAD - BOS
1 stop3h 23mUnited Airlines
Tue 21/1009:30BOS - IAD
Nonstop1h 44mUnited Airlines
Deal found 13/8£113
Mon 8/922:18IAD - BOS
Nonstop1h 39mUnited Airlines
Tue 9/905:30BOS - IAD
Nonstop1h 40mUnited Airlines
Deal found 14/8£114
Tue 9/908:55IAD - BOS
Nonstop1h 40mUnited Airlines
Fri 12/905:30BOS - IAD
Nonstop1h 40mUnited Airlines
Deal found 14/8£114
Wed 3/917:53IAD - BOS
1 stop5h 29mUnited Airlines
Thu 4/910:43BOS - IAD
1 stop5h 40mUnited Airlines
Deal found 13/8£116
Tue 23/908:40IAD - BOS
1 stop4h 44mUnited Airlines
Tue 30/910:34BOS - IAD
1 stop5h 31mUnited Airlines
Deal found 13/8£117
Tue 16/908:55IAD - BOS
Nonstop1h 40mUnited Airlines
Sun 21/905:30BOS - IAD
Nonstop1h 40mUnited Airlines
Deal found 13/8£118

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 15 August 2025.
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

Dulles Intl

Fly to

Boston

Route

Depart

Return

Price

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Wed 3/9

22:18-23:57

Nonstop1h 39m

Boston Logan Intl

Wed 10/9

07:10-11:55

1 stop4h 45m

£109

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Wed 3/9

12:35-14:13

Nonstop1h 38m

Boston Logan Intl

Sat 6/9

07:10-11:48

1 stop4h 38m

£109

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Mon 15/9

17:53-23:22

1 stop5h 29m

Boston Logan Intl

Wed 17/9

13:00-14:43

Nonstop1h 43m

£110

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Mon 1/9

06:20-11:17

1 stop4h 57m

Boston Logan Intl

Sat 6/9

14:40-16:23

Nonstop1h 43m

£110

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Tue 23/9

22:18-23:57

Nonstop1h 39m

Boston Logan Intl

Thu 25/9

12:10-16:06

1 stop3h 56m

£110

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Thu 30/10

06:00-10:43

1 stop4h 43m

Boston Logan Intl

Tue 4/11

05:30-07:13

Nonstop1h 43m

£110

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Tue 23/9

22:18-23:57

Nonstop1h 39m

Boston Logan Intl

Tue 30/9

10:34-16:05

1 stop5h 31m

£110

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 6/9

06:20-09:37

1 stop3h 17m

Boston Logan Intl

Sat 6/9

14:40-16:23

Nonstop1h 43m

£110

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 13/9

08:35-13:24

1 stop4h 49m

Boston Logan Intl

Mon 15/9

05:30-07:10

Nonstop1h 40m

£110

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Mon 8/9

17:53-23:22

1 stop5h 29m

Boston Logan Intl

Sat 13/9

05:30-07:10

Nonstop1h 40m

£110

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 20 results
1
2

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 8 August 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Boston is 54 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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of £10). Flying from Washington, D.C. Dulles Intl Airport to Boston in July is currently the most expensive (average of £724). 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 15 August 2025.

When flying from Washington, D.C. Dulles Intl Airport to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 3% versus a flight at midday.

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 7 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.

  • 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 (92%), Avianca (82%), Ethiopian Air( 72%).

  • 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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of £10). Flying from Washington, D.C. Dulles Intl Airport to Boston in July is currently the most expensive (average of £724). 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
Peabody
Cambridge
Somerville
Quincy
Chelmsford

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

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

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