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$233+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BRU
Dec 31 — Jan 71
Wed 12/31
Wed 1/7
1 adult, Economy
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Find 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 1, 2025.

This oojo deal was found by Cheapflights users on 11/30. 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 12/25:30 pmIAD - BRU
1 stop11h 30mTAP AIR PORTUGAL
Tue 12/96:00 amBRU - IAD
1 stop14h 35mTAP AIR PORTUGAL
Deal found 11/30$579
This oojo deal was found by Cheapflights users on 11/30. 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.
Mon 12/15:30 pmIAD - BRU
1 stop17h 35mTAP AIR PORTUGAL
Mon 12/156:00 amBRU - IAD
1 stop15h 15mTAP AIR PORTUGAL
Deal found 11/30$627
This oojo deal was found by Cheapflights users on 11/30. 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 12/95:30 pmIAD - BRU
1 stop11h 30mTAP AIR PORTUGAL
Tue 12/166:00 amBRU - IAD
1 stop14h 35mTAP AIR PORTUGAL
Deal found 11/30$637
This Cheapflightsfares deal was found by Cheapflights users on 11/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:11 pmIAD - BRU
2 stops15h 29mScandinavian Airlines
Wed 12/1010:20 amBRU - IAD
1 stop12h 55mScandinavian Airlines
Deal found 11/29$658
This FlightHub deal was found by Cheapflights users on 12/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:19 pmIAD - BRU
2 stops25h 31mScandinavian Airlines
Tue 12/911:30 amBRU - IAD
2 stops35h 45mScandinavian Airlines
Deal found 12/1$669
This Gotogate deal was found by Cheapflights users on 12/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:45 pmIAD - BRU
1 stop13h 50mRoyal Air Maroc
Thu 12/115:35 pmBRU - IAD
1 stop31h 10mRoyal Air Maroc
Deal found 12/1$686
This Mytrip deal was found by Cheapflights users on 12/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:00 pmIAD - CRL
2 stops17h 45mMultiple Airlines
Sun 12/77:50 amCRL - IAD
2 stops17h 40mMultiple Airlines
Deal found 12/1$701
This Cheapflightsfares deal was found by Cheapflights users on 11/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:11 pmIAD - BRU
2 stops15h 29mScandinavian Airlines
Mon 12/1510:20 amBRU - IAD
1 stop12h 55mScandinavian Airlines
Deal found 11/30$705
This Gotogate deal was found by Cheapflights users on 12/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:40 pmIAD - BRU
1 stop10h 15mMultiple Airlines
Wed 1/710:20 amBRU - IAD
2 stops38h 10mMultiple Airlines
Deal found 12/1$723
This CheapOair deal was found by Cheapflights users on 11/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/17:49 pmIAD - BRU
2 stops36h 41mScandinavian Airlines
Mon 12/83:10 pmBRU - IAD
2 stops50h 29mScandinavian Airlines
Deal found 11/30$736
This Cheapflightsfares deal was found by Cheapflights users on 11/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:45 pmIAD - BRU
1 stop13h 50mRoyal Air Maroc
Mon 12/157:35 amBRU - IAD
1 stop17h 10mRoyal Air Maroc
Deal found 11/29$741
This Mytrip deal was found by Cheapflights users on 11/29. 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 11/308:30 pmIAD - CRL
2 stops19h 45mMultiple Airlines
Sun 12/77:50 amCRL - IAD
2 stops18h 15mMultiple Airlines
Deal found 11/29$772

Cheap 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 1, 2025.

Round-trip from

$511
(FlightHub)

One-way from

$233
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,517

Good round-trip deal

$920 or less

Good one-way deal

$620 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. 13% potential increase in price ($130 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($64 potential savings vs. average RT price).
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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.
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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 1, 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

Sun 1/18

12:23 pm-2:30 pm

2 stops20h 07m

Brussels Bruxelles-National

Tue 1/27

9:50 am-7:09 pm

2 stops15h 19m

$531

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Wed 2/25

12:23 pm-9:40 am

2 stops15h 17m

Brussels Bruxelles-National

Mon 3/9

6:30 am-6:15 pm

2 stops16h 45m

$557

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Mon 4/13

8:20 pm-9:40 am

1 stop31h 20m

Brussels Bruxelles-National

Tue 4/28

9:10 pm-7:16 pm

2 stops28h 06m

$604

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 1/24

12:23 pm-7:50 pm

2 stops25h 27m

Brussels Bruxelles-National

Mon 2/2

10:20 am-7:09 pm

2 stops14h 49m

$609

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 4/18

12:30 pm-6:20 pm

2 stops23h 50m

Brussels Bruxelles-National

Tue 4/28

9:10 pm-7:16 pm

2 stops28h 06m

$617

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sun 3/1

12:23 pm-2:30 pm

2 stops20h 07m

Brussels Bruxelles-National

Tue 3/31

6:55 pm-4:50 pm

2 stops27h 55m

$629

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 1/22

5:30 pm-6:35 pm

1 stop19h 05m

Charleroi Brussels

Thu 1/29

7:25 am-3:15 pm

1 stop13h 50m

$641

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Fri 2/13

7:40 pm-6:20 pm

2 stops16h 40m

Charleroi Brussels

Tue 2/17

6:20 am-6:30 pm

2 stops18h 10m

$661

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Fri 1/23

8:45 pm-6:35 am

1 stop27h 50m

Brussels Bruxelles-National

Sat 2/7

5:35 pm-6:45 pm

1 stop31h 10m

$673

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Sun 1/18

10:30 pm-10:15 pm

2 stops17h 45m

Charleroi Brussels

Wed 2/4

6:55 am-9:00 pm

2 stops20h 05m

$673

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Showing 1-10 of 51 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, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Belgium (average of $427). Flying from Washington, D.C. Dulles Intl Airport to Belgium in June is currently the most expensive (average of $684). 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 1, 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 1, 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 1, 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
1,591 reviews

Comfort

7.3

Overall

7.4

Crew

8.0

Food

6.7

Entertainment

6.7

Boarding

7.6

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
1,591 reviews
Scandinavian Airlines
7.4
Good
1,591 reviews

Comfort

7.3

Overall

7.4

Crew

8.0

Food

6.7

Entertainment

6.7

Boarding

7.6

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
9,065 reviews
Scandinavian Airlines
7.4
Good
1,591 reviews

Comfort

7.3

Overall

7.4

Crew

8.0

Food

6.7

Entertainment

6.7

Boarding

7.6

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
1,384 reviews
Scandinavian Airlines
7.4
Good
1,591 reviews

Comfort

7.3

Overall

7.4

Crew

8.0

Food

6.7

Entertainment

6.7

Boarding

7.6

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
373 reviews
Scandinavian Airlines
7.4
Good
1,591 reviews

Comfort

7.3

Overall

7.4

Crew

8.0

Food

6.7

Entertainment

6.7

Boarding

7.6

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
584 reviews
Scandinavian Airlines
7.4
Good
1,591 reviews

Comfort

7.3

Overall

7.4

Crew

8.0

Food

6.7

Entertainment

6.7

Boarding

7.6

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 31h 20m. Your travel time can differ by up to . There are 3879 mi between Washington, D.C. Dulles Intl Airport and Belgium.

  • 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 Brussels Airlines (72%), United Airlines (72%) or Air Canada (43%) 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 $421. On average you can expect to pay $1,292. The most popular route, (Washington, D.C. Dulles Intl - Brussels Bruxelles-National), can usually be booked for $389.

  • 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, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Belgium (average of $427). Flying from Washington, D.C. Dulles Intl Airport to Belgium in June is currently the most expensive (average of $684). 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
Baltimore to Heathrow flights
Dulles Intl to Charles de Gaulle flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
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Reagan-National to Gatwick flights
Dulles Intl to Orly flights
Dulles Intl to Amsterdam flights
Baltimore to Charles de Gaulle flights
Dulles Intl to Stansted flights
Dulles Intl to Athens flights
Reagan-National to Charles de Gaulle flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Reagan-National to Madrid flights
Dulles Intl to Luton flights
Baltimore to Madrid flights
Dulles Intl to Edinburgh flights
Reagan-National to Istanbul flights
Dulles Intl to Keflavik Intl flights
Dulles Intl to Munich flights
Dulles Intl to Bruxelles-National flights
Dulles Intl to Zurich flights
Dulles Intl to Vienna flights
Reagan-National to Orly flights
Baltimore to Dublin flights
Reagan-National to Lisbon flights
Reagan-National to Dublin flights
Baltimore to Lisbon flights
Baltimore to Barcelona-El Prat flights
Baltimore to Keflavik Intl flights
Baltimore to Istanbul flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Sabiha Gokcen flights
Dulles Intl to Geneva flights
Baltimore to Luton flights
Reagan-National to Keflavik Intl flights
Baltimore to Athens flights
Dulles Intl to Malpensa flights
Baltimore to Frankfurt flights
Reagan-National to Athens 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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$419Average$567FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$441Average$754FlexibilityNo cancel feeOn-time76%
KLMCheapest$480Average$713FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$480Average$929FlexibilityNo 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$596Average$953FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$633Average$1,069FlexibilityNo cancel feeOn-timeN/A

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