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$234+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BRU
Aug 9 — Aug 161
Sun 8/9
Sun 8/16
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 July 10, 2026.

This Fareboom deal was found by Cheapflights users on 7/5. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:20 pm
IAD
-
BRU
2 stops15h 55m
Scandinavian Airlines
Mon 8/2410:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 7/5$692
This FlightHub deal was found by Cheapflights users on 7/9. 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.
Sun 11/810:30 pm
IAD
-
BRU
1 stop12h 35m
TAP AIR PORTUGAL
Mon 11/165:55 pm
BRU
-
IAD
1 stop26h 50m
TAP AIR PORTUGAL
Deal found 7/9$693
This Mytrip deal was found by Cheapflights users on 7/5. 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 8/1811:20 pm
IAD
-
CRL
2 stops15h 55m
Multiple Airlines
Wed 9/235:35 pm
CRL
-
IAD
2 stops33h 00m
Multiple Airlines
Deal found 7/5$694
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 8/248:20 pm
IAD
-
BRU
2 stops32h 20m
Scandinavian Airlines
Mon 8/3110:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 7/9$694
This Mytrip deal was found by Cheapflights users on 7/5. 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 8/198:30 pm
IAD
-
BRU
2 stops15h 30m
Multiple Airlines
Wed 8/268:50 pm
BRU
-
IAD
2 stops24h 20m
Multiple Airlines
Deal found 7/5$695
This Mytrip deal was found by Cheapflights users on 7/9. 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 8/168:20 pm
IAD
-
BRU
2 stops32h 20m
Scandinavian Airlines
Tue 8/2511:20 am
BRU
-
IAD
2 stops35h 40m
Scandinavian Airlines
Deal found 7/9$696
This Fareboom deal was found by Cheapflights users on 7/8. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:20 pm
IAD
-
BRU
1 stop20h 40m
Scandinavian Airlines
Fri 10/910:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 7/8$697
This Scandinavian Airlines deal was found by Cheapflights users on 7/9. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:20 pm
IAD
-
BRU
1 stop16h 10m
Scandinavian Airlines
Tue 9/226:55 pm
BRU
-
IAD
2 stops28h 05m
Scandinavian Airlines
Deal found 7/9$698
This oojo deal was found by Cheapflights users on 7/9. 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 10/48:20 pm
IAD
-
BRU
1 stop16h 10m
Scandinavian Airlines
Fri 10/95:45 am
BRU
-
IAD
1 stop17h 15m
Scandinavian Airlines
Deal found 7/9$699
This Mytrip deal was found by Cheapflights users on 7/9. 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 8/174:30 pm
IAD
-
CRL
2 stops19h 05m
Multiple Airlines
Mon 8/249:25 am
CRL
-
IAD
2 stops35h 05m
Multiple Airlines
Deal found 7/9$701
This Justfly.com deal was found by Cheapflights users on 7/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/308:30 pm
IAD
-
BRU
2 stops15h 50m
Scandinavian Airlines
Mon 12/710:20 am
BRU
-
IAD
1 stop12h 55m
Scandinavian Airlines
Deal found 7/6$701
This Cheapflightsfares deal was found by Cheapflights users on 7/8. 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 8/268:20 pm
IAD
-
BRU
2 stops18h 10m
Scandinavian Airlines
Mon 8/3110:20 am
BRU
-
IAD
1 stop12h 40m
Scandinavian Airlines
Deal found 7/8$703

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 July 10, 2026.

Round-trip from

$692
(Fareboom)

One-way from

$234
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,066

Good round-trip deal

$1,218 or less

Good one-way deal

$760 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. 26% potential increase in price ($302 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 10, 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

Cheapest round-trip

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Wed 8/19

8:20 pm-2:35 pm

1 stop12h 15m

Brussels Bruxelles-National

Wed 9/2

9:10 pm-5:00 pm

2 stops25h 50m

$693

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 9/10

8:30 pm-9:30 pm

2 stops19h 00m

Charleroi Brussels

Tue 9/22

5:30 pm-7:20 pm

3 stops31h 50m

$728

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Mon 11/9

5:45 pm-7:15 am

Nonstop7h 30m

Brussels Bruxelles-National

Tue 11/17

11:55 am-2:30 pm

Nonstop8h 35m

$762

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Mon 11/9

8:30 pm-6:20 pm

2 stops15h 50m

Brussels Bruxelles-National

Tue 11/17

7:00 pm-5:15 pm

2 stops28h 15m

$784

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Tue 11/17

9:20 pm-10:20 pm

1 stop19h 00m

Brussels Bruxelles-National

Thu 12/3

6:15 pm-11:45 am

1 stop23h 30m

$790

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Wed 11/11

10:30 pm-8:45 pm

1 stop16h 15m

Charleroi Brussels

Thu 11/19

7:25 am-3:15 pm

1 stop13h 50m

$794

Washington, D.C.Brussels

IAD - BRU

IADBRU

Washington, D.C. Dulles Intl

Fri 8/21

8:20 pm-9:40 am

1 stop31h 20m

Brussels Bruxelles-National

Fri 9/4

3:15 pm-5:00 pm

1 stop31h 45m

$806

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Mon 8/17

8:30 pm-8:35 pm

2 stops18h 05m

Charleroi Brussels

Mon 8/24

9:15 pm-9:24 pm

3 stops30h 09m

$813

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Fri 10/2

5:05 pm-5:40 pm

2 stops18h 35m

Charleroi Brussels

Sat 10/10

6:05 pm-3:10 pm

2 stops27h 05m

$823

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 10/22

5:45 pm-3:25 pm

1 stop15h 40m

Charleroi Brussels

Sun 10/25

7:45 am-9:35 pm

1 stop18h 50m

$829

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/7

Showing 1-10 of 53 resultsSorted by cheapest first
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6

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 $385). Flying from Washington, D.C. Dulles Intl Airport to Belgium in June is currently the most expensive (average of $773). 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 July 10, 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.

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 July 10, 2026.

The most flights from IAD to BE0 are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Belgium, you should look to book at least 23 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 July 10, 2026.
Get a feel of what it's like to fly with Scandinavian Airlines,United Airlines, andAer 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
1,873 reviews

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Scandinavian Airlines
7.4
Good
1,873 reviews
Scandinavian Airlines
7.4
Good
1,873 reviews

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
United Airlines
7.4
Good
9,964 reviews
Scandinavian Airlines
7.4
Good
1,873 reviews

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Aer Lingus
7.3
Good
1,652 reviews
Scandinavian Airlines
7.4
Good
1,873 reviews

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Brussels Airlines
7.2
Good
420 reviews
Scandinavian Airlines
7.4
Good
1,873 reviews

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Icelandair
7.0
Good
702 reviews
Scandinavian Airlines
7.4
Good
1,873 reviews

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(

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, United Airlines, and Turkish Airlines can get you from Washington, D.C. Dulles Intl Airport to Belgium in just under 7h 30m. Your travel time can differ by up to 11h 30m. There are 3879 mi between Washington, D.C. Dulles Intl Airport and Belgium. This flight may include one or multiple stops.

  • 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 $298 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Scandinavian Airlines from $370 and Brussels Airlines from $461 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 Brussels Airlines (62%), United Airlines (62%) or Lufthansa (51%) 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 $516. On average you can expect to pay $2,441. The most popular route, (Washington, D.C. Dulles Intl - Brussels Bruxelles-National), can usually be booked for $455.

  • 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 $385). Flying from Washington, D.C. Dulles Intl Airport to Belgium in June is currently the most expensive (average of $773). 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
Dulles Intl to Madrid flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Dulles Intl to Stansted flights
Dulles Intl to Istanbul flights
Dulles Intl to Dublin flights
Dulles Intl to Athens flights
Dulles Intl to Frankfurt flights
Baltimore to Gatwick flights
Dulles Intl to Keflavik Intl flights
Dulles Intl to Barcelona-El Prat flights
Baltimore to Keflavik Intl flights
Baltimore to Charles de Gaulle flights
Reagan-National to Charles de Gaulle flights
Dulles Intl to Lisbon flights
Dulles Intl to Orly flights
Dulles Intl to Luton flights
Dulles Intl to Munich flights
Dulles Intl to Amsterdam flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Edinburgh flights
Dulles Intl to Bruxelles-National flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Reagan-National to Madrid flights
Reagan-National to Keflavik Intl flights
Baltimore to Madrid flights
Dulles Intl to Vicenza flights
Dulles Intl to Zurich flights
Baltimore to Istanbul flights
Baltimore to Frankfurt flights
Baltimore to Athens flights
Baltimore to Dublin flights
Reagan-National to Lisbon flights
Baltimore to Lisbon flights
Dulles Intl to Oslo Gardermoen flights
Dulles Intl to Copenhagen flights
Baltimore to Barcelona-El Prat flights

Top 8 airlines flying from Dulles Intl to Belgium

Discover the top 8 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 July 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$393Average$634FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$440Average$730FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$463Average$581FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$531Average$633FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$539Average$796FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$621Average$953FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$761Average$1,362FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$762Average$1,270FlexibilityNo cancel feeOn-time76%

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