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

There are many flights that can get you from Boston to Washington, D.C. Dulles Intl Airport in 4h 24m. Fly via United Airlines to get the fastest option. There are 411 mi between Boston and Washington, D.C. Dulles Intl Airport.

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

The most flights from BOS to IAD are scheduled on a Friday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (13 on average).

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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

On average you can expect to pay £691 for a flight from Boston to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is £233 while the most popular route, (Boston Logan Intl - Washington, D.C. Dulles Intl) is currently priced at £377.

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

Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Logan Intl; the airport handles an average of 17 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Boston airport to Washington, D.C. Dulles Intl. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.

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

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

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

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

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

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

£48+ Cheap Flights from Boston to Washington, D.C. Dulles Intl Airport

Cheapflights Tip: The best prices from Boston Logan Intl to Washington, D.C. Dulles Intl are usually found in January or December, booked 68 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Boston to Dulles Intl

Enter your travel dates to find the best prices.

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Cheapest flights from Boston to Dulles Intl
Explore the most affordable flight options available from Boston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 October 2026.

Sun 8/1105:30 -

Nonstop1h 40m

Fri 13/1122:19 -

Nonstop1h 40m

Deal found 1/10£88

Thu 29/1005:30 -

Nonstop1h 40m

Fri 30/1022:19 -

Nonstop1h 40m

Deal found 30/9£97

Sat 14/1105:30 -

Nonstop1h 40m

Sun 15/1108:40 -

Nonstop1h 39m

Deal found 30/9£103

Thu 29/1005:30 -

Nonstop1h 40m

Mon 2/1108:40 -

Nonstop1h 39m

Deal found 1/10£104

Tue 10/1119:41 -

Nonstop1h 47m

Sun 15/1108:40 -

Nonstop1h 39m

Deal found 1/10£106

Thu 29/1009:30 -

Nonstop1h 45m

Sun 1/1106:10 -

1 stop4h 57m

Deal found 29/9£111

Fri 13/1105:30 -

Nonstop1h 40m

Sun 15/1108:40 -

Nonstop1h 39m

Deal found 1/10£115

Sun 22/1105:30 -

Nonstop1h 40m

Mon 23/1112:50 -

Nonstop1h 42m

Deal found 30/9£119

Fri 23/1005:45 -

Nonstop1h 35m

Tue 27/1017:15 -

Nonstop1h 42m

Deal found 30/9£119

Thu 22/1005:45 -

Nonstop1h 35m

Mon 26/1017:50 -

1 stop4h 09m

Deal found 30/9£120

Tue 1/1214:36 -

Nonstop1h 47m

Fri 4/1222:19 -

Nonstop1h 40m

Deal found 30/9£123

Find flight deals from Boston to Dulles Intl

Round-trip from	£88
One-way from	£48
Popular in	June
Cheapest in	January
Average price	£257
Good one-way deal	£691 or less

United Airlines
8/11-13/11
Nonstop
3h 20m total
Boston to Washington, D.C.

Search Deals

United Airlines
7/1-31/12
1 total stop
4h 14m total
Boston to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£15 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).

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Average for round-trip flights in October 2026

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Price to beat on a one-way flight from Boston Logan Intl to Washington, D.C. Dulles Intl.

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to Washington, D.C. Dulles Intl Airport that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Fri 13/11

05:30-07:10

Nonstop1h 40m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£54

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Mon 23/11

18:05-22:25

1 stop4h 20m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£67

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Wed 21/10

07:38-11:25

1 stop3h 47m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£67

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Tue 3/11

05:30-07:10

Nonstop1h 40m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£77

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Tue 27/10

19:41-21:28

Nonstop1h 47m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£79

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Thu 5/11

05:30-07:10

Nonstop1h 40m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£92

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Mon 7/12

19:01-22:54

1 stop3h 53m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£94

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Thu 5/11

06:00-11:50

1 stop5h 50m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Tue 3/11

09:15-16:28

1 stop7h 13m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£100

BostonWashington, D.C.

BOS Boston Logan Intl - IAD Washington, D.C. Dulles Intl

BOSIAD

Boston Logan Intl

Fri 20/11

05:30-07:10

Nonstop1h 40m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£101

Flights are sorted by cheapest return flights first.

Deals found on 1/10

Showing 1-10 of 22 resultsSorted by cheapest first

Best time to book a flight from Boston to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Boston with our price prediction graph.

BOS-IAD

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 Boston to Washington, D.C. Dulles Intl Airport

Prices

Airlines

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

To ensure you get the cheapest price possible for a flight from Boston to Washington, D.C. Dulles Intl Airport, you should look to book at least 67 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Boston to Washington, D.C. Dulles Intl Airport (average of £190). Flying from Boston to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of £280). 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 BOS to IAD?

When flying from Boston to Washington, D.C. Dulles Intl Airport, 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 Boston to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Boston to Washington, D.C. Dulles Intl Airport flights typically cost between £181 and £341 in November.
The cheapest return price found within the last 5 days was £88 on United Airlines (8 Nov–13 Nov).

Related info for your journey

What airport do you fly from for flights from Boston to Washington, D.C. Dulles Intl?
Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Logan Intl; the airport handles an average of 17 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Boston airport to Washington, D.C. Dulles Intl. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.
How long is the flight from Boston to Washington, D.C. Dulles Intl Airport?
There are many flights that can get you from Boston to Washington, D.C. Dulles Intl Airport in 4h 24m. Fly via United Airlines to get the fastest option. There are 411 mi between Boston and Washington, D.C. Dulles Intl Airport.
What are the most reliable airlines from Boston to Washington, D.C. Dulles Intl Airport?
The top 3 most reliable airlines when flying from Boston to Washington, D.C. Dulles Intl Airport are Ethiopian Air (93%), Egyptair (89%) and Air China (82%).
What are the cheapest flights from Boston to Washington, D.C. Dulles Intl Airport?
On average you can expect to pay £691 for a flight from Boston to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is £233 while the most popular route, (Boston Logan Intl - Washington, D.C. Dulles Intl) is currently priced at £377.
Can I find deals for flights from Boston to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Boston to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Boston to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Dulles Intl.
Can I find deals for business class flights from Boston to Dulles Intl?
Yes. Cheapflights offers flight deals from Boston to Dulles Intl 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 Boston to Washington, D.C. Dulles Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Boston to Washington, D.C. Dulles Intl Airport (average of £190). Flying from Boston to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of £280). 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.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to Dulles Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to Dulles Intl from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes, we can. To see specific flights from Boston to Dulles Intl 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 Boston to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Boston today and book when prices fit your budget.

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Cheap flights from Boston to Washington, D.C. Dulles Intl Airport from £48

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Boston to Dulles Intl

Cheapest flights from Boston to Dulles IntlExplore the most affordable flight options available from Boston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 October 2026.

Explore the most affordable flight options available from Boston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 October 2026.

Best flights from Boston to Dulles IntlDiscover carefully curated flight deals from Boston to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 October 2026.

Discover carefully curated flight deals from Boston to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 October 2026.

Direct flights from Boston to Dulles IntlExplore direct flight options from Boston to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 October 2026.

Explore direct flight options from Boston to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 October 2026.

Last-minute flights from Boston to Dulles IntlDiscover last-minute flight deals from Boston to Dulles Intl. Data last updated 5 October 2026 and is based on user searches.

Discover last-minute flight deals from Boston to Dulles Intl. Data last updated 5 October 2026 and is based on user searches.

One-way flights from Boston to Dulles IntlSearch for one-way flight options from Boston to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 5 October 2026.

Search for one-way flight options from Boston to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 5 October 2026.

Find flight deals from Boston to Dulles Intl

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Use the filters below to find and compare flights from Boston to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Boston to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Boston with our price prediction graph.

Cheapflights Insights

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

To ensure you get the cheapest price possible for a flight from Boston to Washington, D.C. Dulles Intl Airport, you should look to book at least 67 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

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

When flying from Boston to Washington, D.C. Dulles Intl Airport, 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 Boston to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Boston to Washington, D.C. Dulles Intl Airport flights typically cost between £181 and £341 in November.The cheapest return price found within the last 5 days was £88 on United Airlines (8 Nov–13 Nov).

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

The most flights from BOS to IAD are scheduled on a Friday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (13 on average).

Related info for your journey

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

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

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

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

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

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

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

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

Travelling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Boston to Dulles Intl

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Complete your trip

Complete your trip to Dulles Intl by adding a car hire and/or hotel booking to your travel itinerary.

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Other flights to Dulles Intl

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Boston and Dulles Intl flights

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

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Cheapest flights from Boston to Dulles Intl
Explore the most affordable flight options available from Boston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 October 2026.

Best flights from Boston to Dulles Intl
Discover carefully curated flight deals from Boston to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 October 2026.

Direct flights from Boston to Dulles Intl
Explore direct flight options from Boston to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 October 2026.

Last-minute flights from Boston to Dulles Intl
Discover last-minute flight deals from Boston to Dulles Intl. Data last updated 5 October 2026 and is based on user searches.

One-way flights from Boston to Dulles Intl
Search for one-way flight options from Boston to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 5 October 2026.

Boston to Washington, D.C. Dulles Intl Airport flights typically cost between £181 and £341 in November.
The cheapest return price found within the last 5 days was £88 on United Airlines (8 Nov–13 Nov).