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$260+ Cheap flights from Dulles Intl (IAD) to Brussels

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BRU
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Brussels are usually found in September or November, booked 74 days in advance, depart on a Wednesday or Thursday and return on a Friday

Cheap flight deals from Dulles Intl to Brussels

Cheapest flights from Dulles Intl to Brussels
Explore the most affordable flight options available from Dulles Intl to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This FlightHub deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:20 pm
IAD
-
BRU
2 stops32h 20m
Scandinavian Airlines
Sat 4/258:30 pm
BRU
-
IAD
1 stop26h 20m
Scandinavian Airlines
Deal found 2/3$467
This CrystalTravel deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:20 pm
IAD
-
BRU
2 stops32h 20m
Scandinavian Airlines
Mon 4/135:45 am
BRU
-
IAD
1 stop17h 05m
Scandinavian Airlines
Deal found 2/2$468
This oojo deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Sun 4/198:30 pm
BRU
-
IAD
1 stop26h 20m
Scandinavian Airlines
Deal found 2/4$469
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Sat 5/23:15 pm
BRU
-
IAD
1 stop31h 35m
Scandinavian Airlines
Deal found 2/2$470
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:20 pm
IAD
-
BRU
1 stop17h 30m
Scandinavian Airlines
Thu 4/166:55 pm
BRU
-
IAD
2 stops27h 55m
Scandinavian Airlines
Deal found 2/1$471
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Sat 4/188:30 pm
BRU
-
IAD
1 stop26h 20m
Scandinavian Airlines
Deal found 2/3$475
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Wed 4/2210:20 am
BRU
-
IAD
1 stop12h 30m
Scandinavian Airlines
Deal found 2/3$476
This FlightHub deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:20 pm
IAD
-
BRU
2 stops18h 10m
Scandinavian Airlines
Wed 5/1310:20 am
BRU
-
IAD
1 stop12h 30m
Scandinavian Airlines
Deal found 2/3$477
This FlightHub deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:30 pm
IAD
-
BRU
1 stop31h 10m
Scandinavian Airlines
Tue 3/103:10 pm
BRU
-
IAD
1 stop32h 05m
Scandinavian Airlines
Deal found 2/3$479
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Sat 4/253:15 pm
BRU
-
IAD
1 stop31h 35m
Scandinavian Airlines
Deal found 2/2$481
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Thu 4/2310:20 am
BRU
-
IAD
1 stop12h 30m
Scandinavian Airlines
Deal found 2/2$482
This Mytrip deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:00 am
IAD
-
CRL
3 stops30h 50m
Multiple Airlines
Mon 3/96:00 pm
CRL
-
IAD
2 stops27h 50m
Multiple Airlines
Deal found 2/3$595

Find flight deals from Dulles Intl to Brussels

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Brussels (BR1). 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 February 4, 2026.

Round-trip from

$467
(FlightHub)

One-way from

$260
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$684
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. 19% potential increase in price ($192 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Brussels 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 2,558,603 searches. Data last updated February 4, 2026.
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

Dulles Intl

Fly to

Brussels

Route

Depart

Return

Price

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Mon 4/13

8:20 pm-2:35 pm

1 stop12h 15m

Brussels Bruxelles-National

Thu 4/16

5:45 am-4:50 pm

1 stop17h 05m

$501

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 5/2

8:20 pm-6:30 pm

1 stop16h 10m

Brussels Bruxelles-National

Sun 5/10

10:20 am-4:50 pm

1 stop12h 30m

$572

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 5/2

8:20 pm-2:35 pm

1 stop12h 15m

Brussels Bruxelles-National

Fri 5/8

10:20 am-4:50 pm

1 stop12h 30m

$572

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Wed 3/4

9:00 am-9:50 pm

3 stops30h 50m

Charleroi Brussels

Mon 3/9

6:00 pm-4:50 pm

2 stops27h 50m

$595

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Sun 3/1

6:00 pm-10:45 pm

2 stops22h 45m

Charleroi Brussels

Fri 3/6

6:00 pm-3:50 pm

2 stops27h 50m

$636

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Wed 3/25

10:00 pm-3:45 pm

1 stop12h 45m

Charleroi Brussels

Wed 4/1

9:20 am-3:45 pm

1 stop12h 25m

$666

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 5/7

8:20 pm-7:40 pm

2 stops17h 20m

Charleroi Brussels

Sat 5/9

8:15 pm-4:50 pm

2 stops26h 35m

$671

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Tue 4/14

9:45 pm-9:25 pm

1 stop17h 40m

Brussels Bruxelles-National

Tue 4/21

6:55 pm-11:35 am

1 stop22h 40m

$684

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Wed 4/1

1:19 pm-8:05 pm

2 stops24h 46m

Brussels Bruxelles-National

Sun 4/19

10:20 am-4:50 pm

1 stop12h 30m

$701

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Wed 4/8

5:30 pm-7:15 am

Nonstop7h 45m

Brussels Bruxelles-National

Fri 4/17

12:00 pm-2:20 pm

Nonstop8h 20m

$712

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 37 results
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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
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 Brussels

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Brussels. Price data was last updated on January 30, 2026.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Brussels is 74 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 Brussels?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Brussels (average of $392). Flying from Washington, D.C. Dulles Intl Airport to Brussels in June is currently the most expensive (average of $673). 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?

Find hourly flight availability from Dulles Intl to Brussels. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2026.

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

Explore weekly flight availability from Dulles Intl to Brussels. 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 February 4, 2026.

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).

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

AI-powered summary based on content written by travel experts. AI can make mistakes.
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

Get insights into the airlines that provide service to Brussels. 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 Brussels. Reviews last updated February 4, 2026.
See what other customers who have flown with United Airlines, Scandinavian Airlines, and Aer Lingus 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.
United Airlines
7.4
Good
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,236 reviews
United Airlines
7.4
Good
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Scandinavian Airlines
7.3
Good
1,677 reviews
United Airlines
7.4
Good
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,444 reviews
United Airlines
7.4
Good
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Brussels Airlines
7.2
Good
381 reviews
United Airlines
7.4
Good
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
606 reviews
United Airlines
7.4
Good
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Brussels. 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 Washington, D.C. Dulles Intl Airport to Brussels?

    Airlines like Scandinavian Airlines and Turkish Airlines fly from Washington, D.C. Dulles Intl Airport to Brussels in about 12h 15m. The time it takes to get you to your destination can typically vary by up to 5h 25m. 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 TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as $333 on this airline. Additional options worth looking into are British Airways and Icelandair, starting at $345 and $393 round-trip. These flights start at 58% 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 $188 on Icelandair. Other airlines that offer cheap prices include Scandinavian Airlines from $285 and Brussels Airlines from $439 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 SWISS (46%), Air Canada (43%) and Austrian Airlines (43%).

  • 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 $386. On average you can expect to pay $1,158. The most popular route, (Washington, D.C. Dulles Intl - Brussels Bruxelles-National), can usually be booked for $458.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Brussels (average of $392). Flying from Washington, D.C. Dulles Intl Airport to Brussels in June is currently the most expensive (average of $673). 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

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

Top 10 airlines flying from Dulles Intl to Brussels

Discover the top 10 airlines that operate flights from Dulles Intl to Brussels. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$333Average$726FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$345Average$726FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$393Average$741FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$423Average$562FlexibilityNo cancel feeOn-time77%
KLMCheapest$480Average$713FlexibilityNo cancel feeOn-time75%
DeltaCheapest$511Average$704FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$539Average$791FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$540Average$624FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$592Average$931FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$633Average$1,066FlexibilityNo cancel feeOn-timeN/A

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