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$248+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BRU
Apr 2 — Apr 91
Thu 4/2
Thu 4/9
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 March 3, 2026.

This KAYAK deal was found by Cheapflights users on 2/27. 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.
Mon 4/278:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Sun 5/1010:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 2/27$503
This KAYAK deal was found by Cheapflights users on 3/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Wed 4/2910:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 3/1$504
This oojo deal was found by Cheapflights users on 2/26. 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.
Sun 4/58:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Thu 4/1610:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 2/26$505
This oojo deal was found by Cheapflights users on 2/27. 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 4/228:20 pm
IAD
-
BRU
1 stop16h 10m
Scandinavian Airlines
Wed 5/1310:55 am
BRU
-
IAD
2 stops36h 05m
Scandinavian Airlines
Deal found 2/27$506
This KAYAK deal was found by Cheapflights users on 3/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Mon 4/279:10 pm
BRU
-
IAD
2 stops49h 50m
Scandinavian Airlines
Deal found 3/1$507
This Mytrip deal was found by Cheapflights users on 2/28. 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 4/198:20 pm
IAD
-
BRU
2 stops32h 20m
Scandinavian Airlines
Tue 4/289:10 pm
BRU
-
IAD
2 stops25h 50m
Scandinavian Airlines
Deal found 2/28$508
This FlightHub deal was found by Cheapflights users on 2/27. 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.
Thu 5/78:20 pm
IAD
-
BRU
2 stops57h 40m
Scandinavian Airlines
Wed 5/1310:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 2/27$509
This Mytrip deal was found by Cheapflights users on 2/27. 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.
Thu 5/78:20 pm
IAD
-
BRU
1 stop31h 20m
Scandinavian Airlines
Sat 5/1610:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 2/27$510
This KAYAK deal was found by Cheapflights users on 3/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:20 pm
IAD
-
BRU
2 stops42h 20m
Scandinavian Airlines
Sun 10/253:10 pm
BRU
-
IAD
1 stop32h 05m
Scandinavian Airlines
Deal found 3/1$511
This lastminute.com deal was found by Cheapflights users on 3/3. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:20 pm
IAD
-
BRU
2 stops32h 20m
Scandinavian Airlines
Fri 4/2411:20 am
BRU
-
IAD
2 stops35h 40m
Scandinavian Airlines
Deal found 3/3$514
This Gotogate deal was found by Cheapflights users on 2/27. 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.
Thu 4/98:20 pm
IAD
-
BRU
2 stops15h 55m
Scandinavian Airlines
Fri 4/1710:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 2/27$515
This Mytrip deal was found by Cheapflights users on 3/3. 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.
Thu 4/168:30 pm
IAD
-
CRL
2 stops19h 00m
Multiple Airlines
Mon 4/208:50 am
CRL
-
IAD
2 stops16h 30m
Multiple Airlines
Deal found 3/3$586

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 March 3, 2026.

Round-trip from

$503
(KAYAK)

One-way from

$248
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$767

Good round-trip deal

$760 or less

Good one-way deal

$386 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. 2% potential increase in price ($19 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 March 2026
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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 March 3, 2026.
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

Fly to

Route

Depart

Return

Price

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 4/9

5:45 pm-2:10 pm

2 stops14h 25m

Charleroi Brussels

Mon 4/13

4:10 pm-3:10 pm

2 stops29h 00m

$703

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Sun 4/19

1:20 pm-8:30 pm

2 stops25h 10m

Charleroi Brussels

Tue 4/28

9:40 am-11:35 am

2 stops31h 55m

$712

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 3/21

9:30 pm-7:50 pm

1 stop17h 20m

Brussels Bruxelles-National

Wed 3/25

6:30 am-6:15 pm

2 stops16h 45m

$812

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sat 4/25

10:10 pm-8:00 pm

1 stop15h 50m

Brussels Bruxelles-National

Sat 5/2

12:00 pm-2:20 pm

Nonstop8h 20m

$819

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Fri 4/10

5:05 pm-7:05 pm

2 stops20h 00m

Charleroi Brussels

Mon 4/13

9:30 pm-3:10 pm

2 stops23h 40m

$832

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 3/19

6:05 pm-12:35 pm

1 stop13h 30m

Charleroi Brussels

Fri 3/27

6:25 am-4:15 pm

2 stops38h 50m

$861

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Sun 3/22

6:05 pm-12:45 pm

1 stop13h 40m

Charleroi Brussels

Wed 4/1

6:40 am-7:00 pm

2 stops18h 20m

$864

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 4/23

8:30 pm-9:30 pm

2 stops19h 00m

Charleroi Brussels

Tue 5/19

12:25 pm-3:10 pm

2 stops32h 45m

$873

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Sun 4/26

5:35 pm-7:25 am

Nonstop7h 50m

Brussels Bruxelles-National

Tue 5/19

12:00 pm-2:20 pm

Nonstop8h 20m

$878

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Sat 5/2

5:15 pm-9:40 pm

2 stops22h 25m

Charleroi Brussels

Sun 5/10

6:30 am-7:00 pm

2 stops18h 30m

$893

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 49 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Belgium (average of $401). Flying from Washington, D.C. Dulles Intl Airport to Belgium in June is currently the most expensive (average of $670). 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 March 3, 2026.

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

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 March 3, 2026.
Get a feel of what it's like to fly with United Airlines, Scandinavian 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.
United Airlines
7.4
Good
9,381 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
9,381 reviews
United Airlines
7.4
Good
9,381 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
1,703 reviews
United Airlines
7.4
Good
9,381 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
1,466 reviews
United Airlines
7.4
Good
9,381 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
388 reviews
United Airlines
7.4
Good
9,381 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
617 reviews
United Airlines
7.4
Good
9,381 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

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 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?

    United Airlines can get you from Washington, D.C. Dulles Intl Airport to Belgium in just under 15h 50m. 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 $285 and Brussels Airlines from $439 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 SWISS (66%), Air Canada (65%) or Austrian Airlines (65%) 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 $261. On average you can expect to pay $1,201. The most popular route, (Washington, D.C. Dulles Intl - Brussels Bruxelles-National), can usually be booked for $476.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Belgium (average of $401). Flying from Washington, D.C. Dulles Intl Airport to Belgium in June is currently the most expensive (average of $670). 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 Lisbon flights
Dulles Intl to Dublin flights
Reagan-National to Heathrow flights
Dulles Intl to Madrid flights
Dulles Intl to Athens flights
Dulles Intl to Gatwick flights
Dulles Intl to Istanbul flights
Dulles Intl to Stansted flights
Dulles Intl to Barcelona-El Prat flights
Baltimore to Charles de Gaulle flights
Dulles Intl to Amsterdam flights
Baltimore to Gatwick flights
Reagan-National to Charles de Gaulle flights
Dulles Intl to Orly flights
Dulles Intl to Frankfurt flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Bruxelles-National flights
Reagan-National to Madrid flights
Dulles Intl to Edinburgh flights
Baltimore to Madrid flights
Dulles Intl to Keflavik Intl flights
Baltimore to Dublin flights
Dulles Intl to Zurich flights
Baltimore to Lisbon flights
Baltimore to Athens flights
Dulles Intl to Munich flights
Baltimore to Keflavik Intl flights
Reagan-National to Lisbon flights
Dulles Intl to Vicenza flights
Baltimore to Istanbul flights
Dulles Intl to Copenhagen flights
Dulles Intl to Luton flights
Reagan-National to Keflavik Intl flights
Baltimore to Barcelona-El Prat flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Vienna 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 March 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$333Average$726FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$393Average$680FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$423Average$561FlexibilityNo cancel feeOn-time77%
DeltaCheapest$511Average$656FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$539Average$799FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$540Average$631FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$555Average$771FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$592Average$924FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$633Average$1,066FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$775Average$1,254FlexibilityNo cancel feeOn-time76%

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