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Cheap flights from Washington, D.C. Dulles Intl Airport to Boston from £59

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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOS
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Boston Logan Intl are usually found in January or December, 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 25 March 2025.

Round-trip from

£75

One-way from

£59

Popular in

April

Cheapest in

January

Average price

£214
United Airlines
  • United Airlines
  • 9/4-16/4
  • Nonstop
  • 3h 21m total
  • Washington, D.C. to Boston
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United Airlines
  • United Airlines
  • 19/5
  • Nonstop
  • 1h 40m total
  • Washington, D.C. to Boston
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£7 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in March 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 25 March 2025.

Wed 9/422:19IAD - BOS
Nonstop1h 40mUnited Airlines
Wed 16/405:30BOS - IAD
Nonstop1h 41mUnited Airlines
Deal found 25/3£75
Wed 14/520:30IAD - BOS
1 stop10h 56mDelta
Tue 20/510:00BOS - IAD
1 stop9h 39mDelta
Deal found 24/3£159
Fri 4/417:55IAD - BOS
1 stop6h 52mFrontier
Sun 6/409:06BOS - IAD
1 stop11h 38mFrontier
Deal found 25/3£162

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 25 March 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 9/4

22:19-23:59

Nonstop1h 40m

Boston Logan Intl

Wed 16/4

05:30-07:11

Nonstop1h 41m

£75

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Wed 14/5

20:30-07:26

1 stop10h 56m

Boston Logan Intl

Mon 19/5

20:45-11:45

1 stop15h 00m

£159

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Fri 4/4

17:55-00:47

1 stop6h 52m

Boston Logan Intl

Sun 6/4

09:06-20:44

1 stop11h 38m

£162

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Mon 19/5

22:19-23:59

Nonstop1h 40m

£59

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sat 10/5

18:17-22:56

1 stop4h 39m

£96

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

Sun 27/4

17:25-00:44

1 stop7h 19m

£159

Flights are sorted by cheapest return flights first.

Deals found on 25/3

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 21 March 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 25 March 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.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Boston

Explore weekly flight availability from Dulles Intl to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 25 March 2025.

The most flights from IAD to BOS are scheduled on a Saturday (15 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Boston by month

Plan your trip to Boston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boston ranges from 78.0 - 101.0 inches per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.

Temperature in Boston by month

Plan your trip to Boston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated 25 March 2025.
Get a feel of what it's like to fly with Delta, United Airlines and Frontier from Washington, D.C. to Boston by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,890 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,890 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Frontier
6.0
Okay
3,273 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 11 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 cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Boston round-trip?

    Flying on United Airlines is currently your cheapest option to Boston, with prices starting at £75. Additional return tickets that might be worth considering are offered by Delta and Frontier, with the lowest prices starting at £159 and £162, respectively. United Airlines is priced at 65% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Boston one-way?

    One-way options have recently been found by users for as low as £59 on United Airlines. Other airlines that offer cheap prices include Delta from £96 and Frontier from £159 one-way.

  • 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 (95%), ANA (90%), Ethiopian Air( 90%).

  • 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Cambridge
Somerville
Quincy
Chelmsford
Chelsea
Burlington
Kittery

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Alternative routes for Dulles Intl to Boston

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Boston flights

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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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