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$320+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BRU
Jun 29 — Jul 61
Mon 6/29
Mon 7/6
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 May 30, 2026.

This FlightHub deal was found by Cheapflights users on 5/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:20 pm
IAD
-
BRU
2 stops31h 55m
Scandinavian Airlines
Sat 9/263:15 pm
BRU
-
IAD
1 stop31h 45m
Scandinavian Airlines
Deal found 5/26$834
This Mytrip deal was found by Cheapflights users on 5/28. 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.
Mon 11/167:40 pm
IAD
-
CRL
2 stops17h 40m
Multiple Airlines
Mon 11/304:55 pm
CRL
-
IAD
3 stops27h 50m
Multiple Airlines
Deal found 5/28$835
This Scandinavian Airlines deal was found by Cheapflights users on 5/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:20 pm
IAD
-
BRU
1 stop12h 15m
Scandinavian Airlines
Fri 10/307:20 pm
BRU
-
IAD
2 stops29h 30m
Scandinavian Airlines
Deal found 5/28$835
This Mytrip deal was found by Cheapflights users on 5/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:30 pm
IAD
-
BRU
2 stops15h 45m
Multiple Airlines
Tue 8/2510:00 am
BRU
-
IAD
2 stops16h 24m
Multiple Airlines
Deal found 5/26$836
This Mytrip deal was found by Cheapflights users on 5/28. 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.
Wed 8/58:30 pm
IAD
-
BRU
2 stops18h 15m
Multiple Airlines
Wed 8/269:55 pm
BRU
-
IAD
2 stops28h 40m
Multiple Airlines
Deal found 5/28$837
This Mytrip deal was found by Cheapflights users on 5/29. 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.
Fri 10/98:30 pm
IAD
-
CRL
2 stops13h 00m
Multiple Airlines
Tue 10/131:50 pm
CRL
-
IAD
2 stops35h 10m
Multiple Airlines
Deal found 5/29$838
This Kiwi.com deal was found by Cheapflights users on 5/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/55:15 pm
IAD
-
BRU
1 stop21h 30m
Multiple Airlines
Tue 7/147:45 pm
BRU
-
IAD
2 stops45h 01m
Multiple Airlines
Deal found 5/28$838
This Mytrip deal was found by Cheapflights users on 5/27. 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.
Mon 8/1710:35 pm
IAD
-
CRL
2 stops18h 20m
Multiple Airlines
Tue 8/2512:20 pm
CRL
-
IAD
2 stops32h 50m
Multiple Airlines
Deal found 5/27$840
This Mytrip deal was found by Cheapflights users on 5/27. 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 7/238:30 pm
IAD
-
CRL
2 stops20h 15m
Multiple Airlines
Thu 8/2010:15 am
CRL
-
IAD
2 stops34h 55m
Multiple Airlines
Deal found 5/27$841
This FlightHub deal was found by Cheapflights users on 5/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:35 pm
IAD
-
BRU
1 stop19h 20m
TAP AIR PORTUGAL
Tue 9/298:55 pm
BRU
-
IAD
1 stop29h 40m
TAP AIR PORTUGAL
Deal found 5/28$842
This Scandinavian Airlines deal was found by Cheapflights users on 5/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:19 pm
IAD
-
BRU
2 stops56h 21m
Scandinavian Airlines
Sun 8/233:15 pm
BRU
-
IAD
1 stop31h 45m
Scandinavian Airlines
Deal found 5/28$844
This CheapOair deal was found by Cheapflights users on 5/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:30 pm
IAD
-
BRU
2 stops16h 10m
Multiple Airlines
Mon 11/306:30 am
BRU
-
IAD
2 stops16h 45m
Multiple Airlines
Deal found 5/27$846

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 May 30, 2026.

Round-trip from

$834
(FlightHub)

One-way from

$320
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$993

Good round-trip deal

$1,211 or less

Good one-way deal

$701 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. 21% potential increase in price ($212 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 30, 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 - CRL

IADCRL

Washington, D.C. Dulles Intl

Fri 10/9

8:30 pm-3:30 pm

2 stops13h 00m

Charleroi Brussels

Tue 10/13

1:50 pm-7:00 pm

2 stops35h 10m

$838

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Sat 11/7

7:40 pm-10:55 pm

2 stops21h 15m

Charleroi Brussels

Sat 11/21

5:05 pm-8:35 pm

2 stops33h 30m

$856

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Wed 11/25

5:50 pm-11:40 am

1 stop11h 50m

Charleroi Brussels

Fri 12/4

9:55 am-8:35 pm

2 stops16h 40m

$885

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Fri 9/4

3:25 pm-7:40 pm

2 stops22h 15m

Charleroi Brussels

Tue 9/15

12:20 pm-3:10 pm

2 stops32h 50m

$928

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Mon 11/9

7:40 pm-7:20 pm

2 stops17h 40m

Charleroi Brussels

Sat 11/14

5:05 pm-8:35 pm

2 stops33h 30m

$929

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Thu 10/1

9:45 am-3:30 pm

3 stops23h 45m

Charleroi Brussels

Tue 10/6

1:50 pm-7:00 pm

2 stops35h 10m

$950

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Wed 9/16

10:20 pm-10:15 pm

2 stops17h 55m

Charleroi Brussels

Thu 9/24

6:35 am-8:25 pm

3 stops19h 50m

$950

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Tue 11/3

5:25 pm-10:45 pm

2 stops23h 20m

Charleroi Brussels

Tue 11/17

11:00 am-6:45 pm

3 stops37h 45m

$952

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Fri 9/25

8:55 pm-3:30 pm

2 stops12h 35m

Charleroi Brussels

Sun 10/4

11:40 am-3:30 pm

1 stop33h 50m

$955

Washington, D.C.Brussels

IAD - CRL

IADCRL

Washington, D.C. Dulles Intl

Wed 9/2

5:15 pm-10:15 pm

2 stops23h 00m

Charleroi Brussels

Fri 9/11

9:50 am-8:25 pm

2 stops16h 35m

$962

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/28

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 May 30, 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 May 30, 2026.

The most flights from IAD to BE0 are scheduled on a Monday (8 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 67 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 May 30, 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
1,802 reviews

Crew

8.0

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
Scandinavian Airlines
7.4
Good
1,802 reviews
Scandinavian Airlines
7.4
Good
1,802 reviews

Crew

8.0

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
United Airlines
7.4
Good
9,766 reviews
Scandinavian Airlines
7.4
Good
1,802 reviews

Crew

8.0

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
Aer Lingus
7.3
Good
1,589 reviews
Scandinavian Airlines
7.4
Good
1,802 reviews

Crew

8.0

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
Brussels Airlines
7.2
Good
408 reviews
Scandinavian Airlines
7.4
Good
1,802 reviews

Crew

8.0

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
Icelandair
7.0
Good
661 reviews
Scandinavian Airlines
7.4
Good
1,802 reviews

Crew

8.0

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.

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 and United 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 8h 40m. 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 Brussels Airlines from $439 and United Airlines from $464 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 (73%), United Airlines (73%) or Lufthansa (70%) 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 $390. On average you can expect to pay $1,719. The most popular route, (Washington, D.C. Dulles Intl - Brussels Bruxelles-National), can usually be booked for $602.

  • 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
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Dulles Intl to Charles de Gaulle flights
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Baltimore to Charles de Gaulle flights
Baltimore to Gatwick flights
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Reagan-National to Charles de Gaulle flights
Dulles Intl to Orly flights
Reagan-National to Madrid flights
Dulles Intl to Munich flights
Baltimore to Athens flights
Baltimore to Madrid flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Vicenza flights
Dulles Intl to Keflavik Intl flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Copenhagen flights
Dulles Intl to Edinburgh flights
Dulles Intl to Bruxelles-National flights
Dulles Intl to Zurich flights
Dulles Intl to Luton flights
Baltimore to Lisbon flights
Dulles Intl to Vienna flights
Baltimore to Keflavik Intl flights
Baltimore to Dublin flights
Reagan-National to Lisbon flights
Baltimore to Istanbul flights
Baltimore to Barcelona-El Prat flights
Baltimore to Amsterdam flights
Reagan-National to Keflavik Intl flights
Reagan-National 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 May 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$393Average$618FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$440Average$726FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$462Average$558FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$531Average$633FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$539Average$787FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$591Average$874FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$633Average$1,160FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$762Average$1,270FlexibilityNo cancel feeOn-time76%

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