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$271+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BRU
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Washington, D.C. Dulles Intl to Brussels are usually found in January or April, booked 25 days in advance, depart on a Wednesday or Friday and return on a Friday

Cheap 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 20, 2025.

Round-trip from

$454
(Kiwi.com)

One-way from

$364
(Mytrip)

Popular in

July

Cheapest in

January

Average price

$785
From Washington, D.C. Dulles Intl to Brussels
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One-way flight from Washington, D.C. Dulles Intl to Brussels
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Highest demand for flights based on searches. 15% potential increase in price ($165 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find 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 20, 2025.

This oojo deal was found by Cheapflights users on 2/20. 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 10/1510:05 pmIAD - BRU
1 stop15h 45mScandinavian Airlines
Tue 10/217:10 pmBRU - IAD
1 stop30h 49mScandinavian Airlines
Deal found 2/20$461
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/286:10 pmIAD - BRU
1 stop10h 25mAer Lingus
Thu 4/310:20 amBRU - IAD
1 stop11h 30mAer Lingus
Deal found 2/19$475
This British Airways deal was found by Cheapflights users on 2/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/157:00 pmIAD - BRU
1 stop10h 30mBritish Airways
Sun 3/239:35 pmBRU - IAD
1 stop24h 00mBritish Airways
Deal found 2/20$583
This oojo deal was found by Cheapflights users on 2/20. 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.
Tue 3/253:00 pmIAD - BRU
1 stop14h 45mTurkish Airlines
Tue 5/611:10 amBRU - IAD
1 stop29h 35mTurkish Airlines
Deal found 2/20$597
This Icelandair deal was found by Cheapflights users on 2/19. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/268:40 pmIAD - BRU
1 stop10h 15mIcelandair
Fri 4/41:50 pmBRU - IAD
1 stop11h 30mIcelandair
Deal found 2/19$631
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Mon 4/710:05 pmIAD - BRU
2 stops19h 10mMultiple Airlines
Mon 4/147:25 pmBRU - IAD
2 stops30h 34mMultiple Airlines
Deal found 2/20$658
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/206:30 pmIAD - BRU
1 stop32h 20mUnited Airlines
Fri 5/237:00 amBRU - IAD
2 stops15h 10mUnited Airlines
Deal found 2/20$672
This oojo deal was found by Cheapflights users on 2/20. 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.
Fri 5/169:05 pmIAD - BRU
1 stop14h 30mRoyal Air Maroc
Sun 5/256:35 pmBRU - IAD
1 stop30h 30mRoyal Air Maroc
Deal found 2/20$705
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Sun 3/305:45 pmIAD - BRU
1 stop15h 20mTAP AIR PORTUGAL
Wed 4/25:55 amBRU - IAD
1 stop20h 55mTAP AIR PORTUGAL
Deal found 2/20$721
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Sun 3/239:45 pmIAD - CRL
2 stops20h 05mMultiple Airlines
Tue 4/17:20 amCRL - IAD
2 stops18h 05mMultiple Airlines
Deal found 2/20$735

Find flights from Dulles Intl to Brussels within your budget

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 20, 2025.

Fly from

Dulles Intl

Fly to

Brussels

Route

Depart

Return

Price

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Mon 4/7

10:05 pm-3:20 pm

1 stop11h 15m

Brussels Bruxelles-National

Mon 4/14

10:55 am-7:59 pm

2 stops15h 04m

$462

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Fri 3/28

6:10 pm-9:35 am

1 stop10h 25m

Brussels Bruxelles-National

Thu 4/3

10:20 am-3:50 pm

1 stop11h 30m

$475

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 3/15

7:00 pm-10:30 am

1 stop10h 30m

Brussels Bruxelles-National

Sun 3/23

9:35 pm-4:35 pm

1 stop24h 00m

$583

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Tue 3/25

3:00 pm-10:45 am

1 stop14h 45m

Brussels Bruxelles-National

Tue 5/6

11:10 am-10:45 am

1 stop29h 35m

$597

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 3/29

8:30 pm-11:50 am

1 stop10h 20m

Brussels Bruxelles-National

Fri 4/4

1:50 pm-7:20 pm

1 stop11h 30m

$611

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Mon 4/7

10:05 pm-11:15 pm

2 stops19h 10m

Brussels Bruxelles-National

Mon 4/14

7:25 pm-7:59 pm

2 stops30h 34m

$658

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Tue 5/20

6:30 pm-8:50 am

1 stop32h 20m

Brussels Bruxelles-National

Fri 5/23

7:00 am-4:10 pm

2 stops15h 10m

$672

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Fri 5/16

9:05 pm-5:35 pm

1 stop14h 30m

Brussels Bruxelles-National

Sun 5/25

6:35 pm-7:05 pm

1 stop30h 30m

$705

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sun 3/30

5:45 pm-3:05 pm

1 stop15h 20m

Brussels Bruxelles-National

Wed 4/2

5:55 am-8:50 pm

1 stop20h 55m

$721

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Sun 3/23

9:45 pm-10:50 pm

2 stops20h 05m

Charleroi Brussels

Tue 4/1

7:20 am-7:25 pm

2 stops18h 05m

$735

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 25 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.

Travel insights for flights from Dulles Intl to Brussels

Get recent, data-driven insights about flights from Dulles Intl to Brussels including ideal travel times, pricing trends, and more.

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 February 14, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Brussels is 25 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Brussels (average of $614). Flying from Washington, D.C. Dulles Intl Airport to Brussels in June is currently the most expensive (average of $1,146). 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 20, 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Brussels is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 49% on airfare.

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 20, 2025.

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).

Rainfall in Brussels by month

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

In terms of precipitation, rainfall in Brussels ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. August is typically the driest time to visit Brussels when rainfall is around 1.6 in.

Temperature in Brussels by month

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

If weather is an important factor for your trip to Brussels, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 37.4 F).

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 20, 2025.
Read reviews from past customers who have flown United Airlines, Brussels Airlines and Turkish Airlines from Washington, D.C. to Brussels. 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
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines
7.4
Good
8,766 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Brussels Airlines
7.4
Good
341 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Turkish Airlines
7.3
Good
3,832 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Scandinavian Airlines
7.3
Good
1,325 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.

  • 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 Aer Lingus. Our recent data shows that you can find tickets from as low as $454 on this airline. Additional options worth looking into are Scandinavian Airlines and Turkish Airlines, starting at $460 and $597 round-trip. These flights start at 49% 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 $364 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Scandinavian Airlines from $367 and Aer Lingus from $544 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 Air Canada (47%), Austrian Airlines (47%) and Brussels Airlines (47%).

  • 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 $484. On average you can expect to pay $1,368. The most popular route, (Washington, D.C. Dulles Intl - Brussels Bruxelles-National), can usually be booked for $460.

  • 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Brussels (average of $614). Flying from Washington, D.C. Dulles Intl Airport to Brussels in June is currently the most expensive (average of $1,146). 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

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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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$374Average$722FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$426Average$575FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$453Average$759FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$516Average$807FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$559Average$755FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$573Average$929FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$596Average$770FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$675Average$1,172FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$685Average$1,085FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$913Average$1,322FlexibilityNo cancel feeOn-timeN/A
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