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$304+ Cheap flights from Dulles Intl (IAD) to Brussels

IAD — BRU
Dec 10 — Dec 171
Thu 12/10
Thu 12/17
1 adult, Economy
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Find cheap flights from Dulles Intl to Brussels with Cheapflights

1. Tell us where you want to go

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2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Brussels are usually found in April or February, booked 71 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Dulles Intl to Brussels

Cheapest flights from Dulles Intl to Brussels

Wed 12/28:30 pm -
1 stop12h 00m
Sun 12/137:45 pm -
2 stops27h 30m
Deal found 11/9$742
Mon 11/308:30 pm -
2 stops16h 10m
Mon 12/710:20 am -
1 stop12h 55m
Deal found 11/9$743
Mon 11/308:30 pm -
2 stops16h 10m
Sun 12/67:45 pm -
2 stops27h 30m
Deal found 11/9$745
Tue 12/15:25 pm -
1 stop11h 35m
Mon 12/76:00 am -
1 stop15h 15m
Deal found 11/9$746
Tue 12/11:30 pm -
1 stop15h 05m
Tue 12/811:35 am -
1 stop30h 10m
Deal found 11/9$747
Mon 12/712:35 pm -
2 stops13h 00m
Wed 12/1612:55 pm -
1 stop17h 46m
Deal found 11/9$748
Wed 12/210:30 pm -
1 stop12h 35m
Tue 12/86:00 am -
1 stop14h 40m
Deal found 11/9$750
Wed 12/98:10 pm -
1 stop19h 20m
Thu 12/246:40 am -
1 stop16h 20m
Deal found 11/9$751
Sat 11/285:25 pm -
1 stop11h 35m
Tue 12/86:00 am -
1 stop14h 40m
Deal found 11/9$753
Tue 12/17:40 pm -
1 stop12h 55m
Sun 12/66:55 am -
1 stop17h 35m
Deal found 11/5$754
Mon 11/308:30 pm -
2 stops32h 20m
Thu 12/1010:20 am -
1 stop12h 55m
Deal found 11/9$755

Find flight deals from Dulles Intl to Brussels

Round-trip from

$674
(Scandinavian Airlines)

One-way from

$304
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$812
From Washington, D.C. Dulles Intl to Brussels
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Brussels
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($166 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Tue 4/6

5:15 pm-9:40 am

1 stop10h 25m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$355

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Sat 4/10

5:15 pm-9:40 am

1 stop10h 25m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$407

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Sat 4/10

5:15 pm-9:40 am

1 stop10h 25m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$429

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Thu 4/1

5:15 pm-9:40 am

1 stop10h 25m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$432

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Fri 4/30

8:20 pm-12:00 pm

2 stops33h 40m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$509

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Fri 12/25

1:50 pm-2:25 pm

2 stops18h 35m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$647
Quickest round-trip

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Tue 1/12

5:45 pm-7:15 am

Nonstop7h 30m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$704

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Sun 12/6

5:45 pm-7:15 am

Nonstop7h 30m

Brussels Bruxelles-National

Tue 12/15

11:55 am-2:30 pm

Nonstop8h 35m

$792

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Thu 1/14

5:45 pm-7:15 am

Nonstop7h 30m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$804

Washington, D.C.Brussels

IAD Washington, D.C. Dulles Intl - BRU Brussels Bruxelles-National

IADBRU

Washington, D.C. Dulles Intl

Thu 2/18

5:45 pm-7:15 am

Nonstop7h 30m

Brussels Bruxelles-National

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$804

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Dulles Intl to Brussels

Have a flexible travel schedule? Discover the best time to fly to Brussels from Dulles Intl with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Brussels

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

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Brussels (average of $750). Flying from Washington, D.C. Dulles Intl Airport to Brussels in June is currently the most expensive (average of $1,377). 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 BRU?

When flying from Washington, D.C. Dulles Intl Airport to Brussels, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

The most flights from IAD to BR1 are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Brussels?

Airfare is typical for this route at the moment.
Washington, D.C. Dulles Intl Airport to Brussels flights typically cost between $512 and $885 in February.
The cheapest round-trip price found within the last 5 days was $674 on Scandinavian Airlines (Feb 20-Feb 23).

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

The best time to book flights from Washington, D.C. Dulles Intl Airport to Brussels is 65 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.

The best insider tips for Washington, D.C. Dulles Intl Airport to Brussels flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Brussels trip
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
John Walton

John Walton

Expert on Brussels Airlines

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Blane Bachelor

Blane Bachelor

Expert on Lufthansa

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more

Reviews of airlines servicing Brussels

See what other customers who have flown with Scandinavian Airlines,Aer Lingus, andBrussels Airlines from Washington, D.C. Dulles Intl Airport to Brussels have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.5
Good
2,028 reviews

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Scandinavian Airlines
7.5
Good
2,028 reviews
Scandinavian Airlines
7.5
Good
2,028 reviews

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Aer Lingus
7.3
Good
1,882 reviews
Scandinavian Airlines
7.5
Good
2,028 reviews

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Brussels Airlines
7.3
Good
437 reviews
Scandinavian Airlines
7.5
Good
2,028 reviews

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
United Airlines
7.3
Good
10,471 reviews
Scandinavian Airlines
7.5
Good
2,028 reviews

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Icelandair
6.9
Okay
767 reviews
Scandinavian Airlines
7.5
Good
2,028 reviews

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(

Related info for your journey

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

    Airlines like United Airlines and Delta fly from Washington, D.C. Dulles Intl Airport to Brussels in about 7h 30m. The time it takes to get you to your destination can typically vary by up to 6h 30m. Airlines will cover a distance of 3879 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Brussels round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Brussels is Icelandair. Our recent data shows that you can find tickets from as low as $385 on this airline. Additional options worth looking into are Scandinavian Airlines and Turkish Airlines, starting at $467 and $517 round-trip. These flights start at 60% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $232 on Icelandair. Other airlines that offer cheap prices include Aer Lingus from $401 and Scandinavian Airlines from $456 one-way.

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

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Brussels are Brussels Airlines (78%), United Airlines (78%) and Air Canada (73%).

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Brussels is $549. On average you can expect to pay $2,495. The most popular route, (Washington, D.C. Dulles Intl - Brussels Bruxelles-National), can usually be booked for $607.

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

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

  • How can I find direct flights from Dulles Intl to Brussels?

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Brussels 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 Brussels?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Brussels (average of $750). Flying from Washington, D.C. Dulles Intl Airport to Brussels in June is currently the most expensive (average of $1,377). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Brussels

Dulles Intl to Bruxelles-National flights
Baltimore to Bruxelles-National flights
Dulles Intl to Antwerp flights

Top 7 airlines flying from Dulles Intl to Brussels

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$385Average$676FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$467Average$659FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$517Average$654FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$680Average$874FlexibilityNo cancel feeOn-timeN/A
Brussels AirlinesCheapest$762Average$1,611FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$782Average$1,199FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$786Average$1,331FlexibilityNo cancel feeOn-time76%

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