Find flights
Deals
When to book
FAQs

Cheap flights from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport from £383

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — IAD
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Brussels Bruxelles-National to Washington, D.C. Dulles Intl are usually found in May or March, booked 51 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Bruxelles-National to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Bruxelles-National (BRU) to Dulles Intl (IAD). 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 September 2025.

Round-trip from

£383

Popular in

April

Cheapest in

May

Average price

£486
United Airlines
  • United Airlines
  • 29/10-5/11
  • 2 total stops
  • 27h 05m total
  • Brussels to Washington, D.C.
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Bruxelles-National to Dulles Intl

Cheapest flights from Bruxelles-National to Dulles Intl
Explore the most affordable flight options available from Bruxelles-National to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Tue 30/908:30BRU - IAD
1 stop11h 00mUnited Airlines
Sun 19/1009:35IAD - BRU
1 stop16h 30mUnited Airlines
Deal found 14/9£383
Mon 22/907:00BRU - IAD
1 stop12h 30mUnited Airlines
Sun 5/1009:35IAD - BRU
1 stop16h 30mUnited Airlines
Deal found 15/9£383
Thu 6/1107:00BRU - IAD
2 stops15h 21mUnited Airlines
Sat 13/1218:20IAD - BRU
1 stop12h 55mUnited Airlines
Deal found 15/9£384
Tue 30/912:00BRU - IAD
Nonstop8h 25mUnited Airlines
Sun 23/1117:45IAD - BRU
Nonstop7h 30mUnited Airlines
Deal found 14/9£387
Thu 9/1012:00BRU - IAD
Nonstop8h 25mBrussels Airlines
Sun 12/1017:45IAD - BRU
Nonstop7h 30mBrussels Airlines
Deal found 14/9£388
Fri 3/1009:40BRU - IAD
1 stop12h 35mUnited Airlines
Sat 18/1012:50IAD - BRU
2 stops13h 15mUnited Airlines
Deal found 15/9£389
Sat 27/910:00BRU - IAD
2 stops17h 01mUnited Airlines
Sat 4/1013:20IAD - BRU
1 stop13h 40mUnited Airlines
Deal found 14/9£391
Sat 27/908:45BRU - IAD
1 stop13h 41mUnited Airlines
Sat 11/1017:45IAD - BRU
Nonstop7h 30mUnited Airlines
Deal found 14/9£394
Sun 12/1014:25BRU - IAD
1 stop31h 25mUnited Airlines
Mon 20/1017:45IAD - BRU
Nonstop7h 30mUnited Airlines
Deal found 14/9£396
Fri 19/911:35BRU - IAD
1 stop33h 05mITA Airways
Thu 25/916:30IAD - BRU
1 stop12h 10mITA Airways
Deal found 14/9£400
Mon 22/915:05BRU - IAD
2 stops15h 08mDelta
Sun 5/1012:08IAD - BRU
1 stop14h 32mDelta
Deal found 15/9£401

Cheapflights Fare Finder

 
Customise your flight search to find flights from Bruxelles-National to Dulles Intl 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 September 2025.
Use the filters below to find and compare flights from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Bruxelles-National

Fly to

Dulles Intl

Route

Depart

Return

Price

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Sun 9/11

09:30-15:50

1 stop12h 20m

Washington, D.C. Dulles Intl

Thu 20/11

17:45-07:15

Nonstop7h 30m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Thu 25/9

08:30-13:30

1 stop11h 00m

Washington, D.C. Dulles Intl

Thu 16/10

09:35-08:05

1 stop16h 30m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Thu 9/10

08:30-13:30

1 stop11h 00m

Washington, D.C. Dulles Intl

Sun 12/10

17:45-07:15

Nonstop7h 30m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Sat 8/11

07:00-15:50

1 stop14h 50m

Washington, D.C. Dulles Intl

Thu 20/11

09:45-07:50

1 stop16h 05m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Wed 29/10

09:00-21:15

1 stop17h 15m

Washington, D.C. Dulles Intl

Wed 5/11

17:45-07:15

Nonstop7h 30m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Thu 13/11

14:25-20:15

1 stop11h 50m

Washington, D.C. Dulles Intl

Thu 20/11

17:45-07:15

Nonstop7h 30m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Sat 22/11

14:25-20:15

1 stop11h 50m

Washington, D.C. Dulles Intl

Tue 2/12

08:45-07:50

2 stops17h 05m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Wed 8/10

10:30-15:50

1 stop11h 20m

Washington, D.C. Dulles Intl

Sat 18/10

12:40-08:05

2 stops13h 25m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Tue 30/9

07:00-13:30

1 stop12h 30m

Washington, D.C. Dulles Intl

Fri 24/10

13:20-09:00

1 stop13h 40m

£383

BrusselsWashington, D.C.

BRU - IAD

BRUIAD

Brussels Bruxelles-National

Wed 8/10

11:50-07:20

2 stops25h 30m

£616

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 18 results
1
2

Best time to book a flight from Bruxelles-National to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Bruxelles-National 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 Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a return flight from Bruxelles-National to Dulles Intl. Price data was last updated on 12 September 2025.

The best time to book flights from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport is 51 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 Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). 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 BRU to IAD?

Find hourly flight availability from Bruxelles-National to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport as you normally would.

How much does it cost for a return flight from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Bruxelles-National to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport?

    For as low as £383, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Brussels Bruxelles-National Airport in 11h 35m. Brussels Bruxelles-National Airport and Washington, D.C. Dulles Intl Airport are separated by a distance of 3879 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as £616 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Brussels Airlines from £971 and United Airlines from £1,138 one-way.

  • What are the most reliable airlines from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport?

    Consider Air Canada (77%), Austrian Airlines (77%) or SWISS (77%) when booking your flight. These represent the most reliable airlines when flying from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Bruxelles-National to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Bruxelles-National to Dulles Intl?

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

  • Can I find deals for business class flights from Bruxelles-National to Dulles Intl?

    Yes. Cheapflights offers flight deals from Bruxelles-National 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 Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Brussels Bruxelles-National Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). 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
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
College Park
Tysons

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Bruxelles-National to Dulles Intl?

Cheapflights helps you search for flights from Bruxelles-National to Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Bruxelles-National to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Bruxelles-National to Dulles Intl.

Can Cheapflights find flights from Bruxelles-National to Dulles Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Bruxelles-National to Dulles Intl with no change fees.

Can Cheapflights notify me if prices for flights from Bruxelles-National to Dulles Intl become cheaper?

Of course! You can now track prices for flights from Bruxelles-National to Dulles Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.