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$264+ Cheap flights from Dulles Intl (IAD) to Belgium

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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BRU
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheap flight deals from Dulles Intl to Belgium

Cheapest flights from Dulles Intl to Belgium
Explore the most affordable flight options available from Dulles Intl to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Mon 12/155:05 pmIAD - BRU
1 stop18h 45mMultiple Airlines
Fri 1/98:45 amBRU - IAD
2 stops36h 30mMultiple Airlines
Deal found 12/14$1,046
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Mon 12/155:05 pmIAD - BRU
1 stop18h 45mMultiple Airlines
Sat 1/1011:00 amBRU - IAD
2 stops40h 00mMultiple Airlines
Deal found 12/14$1,063
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:30 pmIAD - BRU
1 stop24h 20mTAP AIR PORTUGAL
Sun 1/115:55 pmBRU - IAD
1 stop27h 20mTAP AIR PORTUGAL
Deal found 12/17$1,114
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Tue 12/169:00 pmIAD - BRU
1 stop13h 25mMultiple Airlines
Fri 1/98:45 amBRU - IAD
2 stops36h 30mMultiple Airlines
Deal found 12/14$1,137
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Mon 12/155:05 pmIAD - BRU
1 stop18h 45mMultiple Airlines
Thu 1/86:00 amBRU - IAD
1 stop15h 15mMultiple Airlines
Deal found 12/14$1,147
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Tue 12/169:00 pmIAD - BRU
1 stop13h 25mMultiple Airlines
Sat 1/1011:00 amBRU - IAD
2 stops40h 00mMultiple Airlines
Deal found 12/14$1,153
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Thu 12/2510:55 pmIAD - BRU
2 stops27h 35mMultiple Airlines
Sun 1/115:55 pmBRU - IAD
1 stop27h 20mMultiple Airlines
Deal found 12/17$1,165
This Mytrip deal was found by Cheapflights users on 12/14. 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.
Sat 12/278:30 pmIAD - CRL
2 stops19h 35mMultiple Airlines
Fri 1/98:30 pmCRL - IAD
2 stops24h 45mMultiple Airlines
Deal found 12/14$1,180
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Thu 12/258:30 pmIAD - CRL
2 stops19h 55mMultiple Airlines
Sun 1/119:35 amCRL - IAD
1 stop17h 25mMultiple Airlines
Deal found 12/17$1,212
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Fri 12/269:00 pmIAD - BRU
1 stop13h 10mMultiple Airlines
Sun 1/117:10 pmBRU - IAD
2 stops49h 25mMultiple Airlines
Deal found 12/17$1,215
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Mon 12/156:00 pmIAD - CRL
2 stops36h 15mMultiple Airlines
Sat 1/107:00 amCRL - IAD
1 stop14h 15mMultiple Airlines
Deal found 12/14$1,222
This Mytrip deal was found by Cheapflights users on 12/15. 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.
Tue 12/166:05 pmIAD - BRU
3 stops34h 45mMultiple Airlines
Tue 12/236:00 amBRU - IAD
1 stop14h 35mMultiple Airlines
Deal found 12/15$1,226

Find flight deals from Dulles Intl to Belgium

Keep the following information in mind while searching for Dulles Intl to Belgium flight deals. Data was last updated December 17, 2025.

Round-trip from

$481
(Cheapflightsfares)

One-way from

$264
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,804

Good round-trip deal

$898 or less

Good one-way deal

$650 or less
From Washington, D.C. Dulles Intl to Belgium
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Belgium
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($88 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Belgium.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Belgium.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Belgium 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 December 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Belgium that are best for you.

Fly from

Dulles Intl

Fly to

Belgium

Route

Depart

Return

Price

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Mon 1/26

4:50 pm-7:50 pm

1 stop21h 00m

Brussels Bruxelles-National

Fri 1/30

3:10 pm-6:50 pm

1 stop33h 40m

$500

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 5/2

8:20 pm-6:20 pm

2 stops16h 00m

Brussels Bruxelles-National

Tue 5/12

7:10 pm-4:50 pm

1 stop27h 40m

$535

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 1/24

8:30 pm-10:50 am

2 stops32h 20m

Brussels Bruxelles-National

Sat 1/31

8:30 pm-7:09 pm

2 stops28h 39m

$552

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Wed 1/21

8:30 pm-10:50 am

2 stops32h 20m

Brussels Bruxelles-National

Wed 1/28

8:30 pm-7:09 pm

2 stops28h 39m

$552

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sun 2/8

10:30 pm-5:05 pm

1 stop12h 35m

Brussels Bruxelles-National

Tue 2/17

6:00 am-2:35 pm

1 stop14h 35m

$554

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Thu 4/23

8:20 pm-6:15 pm

2 stops15h 55m

Brussels Bruxelles-National

Thu 5/14

5:45 am-4:50 pm

1 stop17h 05m

$565

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Wed 1/28

9:15 pm-10:10 pm

1 stop18h 55m

Brussels Bruxelles-National

Tue 2/3

6:20 pm-7:20 pm

1 stop31h 00m

$569

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Fri 1/9

7:40 pm-8:45 pm

2 stops19h 05m

Charleroi Brussels

Fri 1/16

8:35 am-6:30 pm

2 stops15h 55m

$588

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Fri 1/30

10:30 pm-10:30 pm

2 stops18h 00m

Charleroi Brussels

Wed 2/4

12:55 pm-3:15 pm

2 stops32h 20m

$653

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 2/12

1:30 pm-8:30 pm

2 stops25h 00m

Charleroi Brussels

Wed 2/18

4:30 pm-11:45 am

2 stops25h 15m

$656

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 46 results
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Best time to book a flight from Dulles Intl to Belgium

Have a flexible travel schedule? Discover the best time to fly to Belgium 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 Belgium

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Belgium (average of $436). Flying from Washington, D.C. Dulles Intl Airport to Belgium in June is currently the most expensive (average of $679). 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 BE?

Find hourly flight availability from Dulles Intl to Belgium. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 17, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Belgium, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 33% versus a flight in the morning.

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

Explore weekly flight availability from Dulles Intl to Belgium. 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 December 17, 2025.

The most flights from IAD to BE0 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).

Reviews of airlines servicing Belgium

Get insights into the airlines that provide service to Belgium. 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 Belgium. Reviews last updated December 17, 2025.
Get a feel of what it's like to fly with Scandinavian Airlines, United Airlines, and Aer Lingus from Washington, D.C. Dulles Intl Airport to Belgium by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.
Scandinavian Airlines
7.4
Good
1,606 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.
United Airlines
7.4
Good
9,092 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.
Aer Lingus
7.2
Good
1,395 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.
Brussels Airlines
7.2
Good
375 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.
Icelandair
7.0
Good
591 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Belgium. 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 Belgium?

    Scandinavian Airlines can get you from Washington, D.C. Dulles Intl Airport to Belgium in just under 21h. Your travel time can differ by up to . There are 3879 mi between Washington, D.C. Dulles Intl Airport and Belgium.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Belgium 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 $206 and TAP AIR PORTUGAL from $298 one-way.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Belgium?

    While some choose either Washington, D.C. Dulles Intl - Charleroi Brussels or Washington, D.C. Dulles Intl - Antwerp Deurne, Washington, D.C. Dulles Intl - Brussels Bruxelles-National is the most popular route from Washington, D.C. Dulles Intl Airport to Belgium.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Belgium consider choosing Lufthansa (51%), Air Canada (50%) or Austrian Airlines (50%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Belgium is $506. On average you can expect to pay $900. The most popular route, (Washington, D.C. Dulles Intl - Brussels Bruxelles-National), can usually be booked for $468.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Belgium (average of $436). Flying from Washington, D.C. Dulles Intl Airport to Belgium in June is currently the most expensive (average of $679). 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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Alternative routes for Dulles Intl to Belgium

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Dulles Intl to Charles de Gaulle flights
Baltimore to Heathrow flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Istanbul flights
Dulles Intl to Madrid flights
Dulles Intl to Gatwick flights
Dulles Intl to Lisbon flights
Reagan-National to Heathrow flights
Dulles Intl to London City flights
Dulles Intl to Orly flights
Reagan-National to Charles de Gaulle flights
Dulles Intl to Barcelona-El Prat flights
Baltimore to Charles de Gaulle flights
Dulles Intl to Athens flights
Baltimore to Gatwick flights
Dulles Intl to Stansted flights
Reagan-National to Orly flights
Reagan-National to Gatwick flights
Dulles Intl to Dublin flights
Dulles Intl to Frankfurt flights
Dulles Intl to Amsterdam flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Reagan-National to Istanbul flights
Dulles Intl to Zurich flights
Reagan-National to Madrid flights
Baltimore to Madrid flights
Dulles Intl to Luton flights
Dulles Intl to Keflavik Intl flights
Dulles Intl to Edinburgh flights
Reagan-National to Lisbon flights
Baltimore to Istanbul flights
Baltimore to Lisbon flights
Dulles Intl to Sabiha Gokcen flights
Baltimore to Keflavik Intl flights
Dulles Intl to Vienna flights
Dulles Intl to Munich flights
Baltimore to Barcelona-El Prat flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Malpensa flights
Baltimore to Athens flights
Dulles Intl to Bruxelles-National flights
Reagan-National to Malpensa flights
Reagan-National to Keflavik Intl flights
Dulles Intl to Linate flights
Baltimore to Luton flights
Reagan-National to Athens flights
Baltimore to Frankfurt flights
Dulles Intl to Geneva flights

Top 10 airlines flying from Dulles Intl to Belgium

Discover the top 10 airlines that operate flights from Dulles Intl to Belgium. 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 December 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$423Average$586FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$441Average$763FlexibilityNo cancel feeOn-time76%
KLMCheapest$480Average$713FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$480Average$784FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$511Average$704FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$539Average$782FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$540Average$624FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$555Average$726FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$592Average$926FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$633Average$1,082FlexibilityNo cancel feeOn-timeN/A

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