How much does it cost to fly round-trip from Brussels to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment. Brussels to Washington, D.C. Dulles Intl Airport flights typically cost between $572 and $640 in December. The cheapest round-trip price found within the last 3 days was $538 on TAP AIR PORTUGAL (Dec 4-Dec 7).

How long is the flight from Brussels to Washington, D.C. Dulles Intl Airport?

TAP AIR PORTUGAL and Delta can get you from Brussels to Washington, D.C. Dulles Intl Airport in just under 14h. Your travel time can differ by up to 1h 15m. There are 3879 mi between Brussels and Washington, D.C. Dulles Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Brussels to Washington, D.C. Dulles Intl Airport round-trip?

Cheapflights users have booked flights from Brussels to Washington, D.C. Dulles Intl Airport round-trip from $456. Other airlines that can offer you cheap pricing are United Airlines, from $470, and Brussels Airlines, from $496. British Airways is currently priced 25% below the average price you’ll pay for this route.

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

To ensure you get the cheapest price possible for a flight from Brussels to Washington, D.C. Dulles Intl Airport, you should look to book at least 51 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.

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

Currently, June is the cheapest month in which you can book a flight from Brussels to Washington, D.C. Dulles Intl Airport (average of $419). Flying from Brussels to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $528). 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.

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

The most flights from BR1 to IAD 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).

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

While on average a flight from Brussels to Washington, D.C. Dulles Intl Airport is generally $1,393, our data shows the cheapest flight currently is $638. When looking at the most popular route, (Brussels Bruxelles-National - Washington, D.C. Dulles Intl), you can expect to pay $519 for that flight.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Brussels to Washington, D.C. Dulles Intl Airport on time: Air Canada (83%), Austrian Airlines (83%), SWISS (83%).

What are the most popular airlines that fly from Brussels to Washington, D.C. Dulles Intl Airport?

Before booking your flight from Brussels to Washington, D.C. Dulles Intl Airport check out the most popular airlines for this route: United Airlines, Brussels Airlines or Lufthansa.

What is the cheapest time of day to fly from BRU to IAD?

It’s optimal to fly from Brussels to Washington, D.C. Dulles Intl Airport in the afternoon. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the morning.

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

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

How can I find direct flights from Brussels to Dulles Intl?

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

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

Yes. Cheapflights offers flight deals from Brussels to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$347+ Flights from Brussels to Washington, D.C. Dulles Intl Airport

Round-trip from	$538 (TAP AIR PORTUGAL)
One-way from	$347 (Kiwi.com)
Popular in	April
Cheapest in	May
Average price	$623

United Airlines

United's Polaris Lounges at IAD offer showers, daybeds, and dining for long-haul passengers.

United's Premium Plus offers extra legroom, upgraded meals, and two checked bags on international flights.

Brussels Airlines

Brussels Airlines' Premium Economy offers larger seats and upgraded meals on long-haul flights.

Brussels Airlines' economy class includes meals, drinks, and seatback entertainment on long-haul flights.

Lufthansa

Lufthansa's Allegris cabins offer 31-inch pitch seats with adjustable headrests for long-haul comfort.

Lufthansa's Sleeper's Row offers extra space with a mattress and blanket for long-haul flights.

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$456	Average$558	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$470	Average$648	FlexibilityNo cancel fee	On-time69%
Brussels Airlines	Cheapest$496	Average$660	FlexibilityNo cancel fee	On-timeN/A
Lufthansa	Cheapest$528	Average$764	FlexibilityNo cancel fee	On-time76%

$347+ Cheap flights from Brussels to Dulles Intl (IAD)

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Brussels to Washington, D.C. Dulles Intl are usually found in May or January, booked 51 days in advance, depart on a Wednesday or Friday and return on a Wednesday

Find flight deals from Brussels to Dulles Intl

Cheapest flights from Brussels to Dulles IntlExplore the most affordable flight options available from Brussels to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 15, 2025.

Explore the most affordable flight options available from Brussels to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 15, 2025.

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Everything you need to know about your flight from Brussels to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Brussels to Dulles Intl. Price data was last updated on November 7, 2025.

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

What is the cheapest time of day to fly from BRU to IAD?

Find hourly flight availability from Brussels to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 15, 2025.

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

How much does it cost to fly round-trip from Brussels to Washington, D.C. Dulles Intl Airport?

The best insider tips for Brussels to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Brussels to Washington, D.C. Dulles Intl Airport trip

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Brussels Airlines

Lufthansa

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Related info for your journey

Find useful and relevant information for your journey from Brussels to Dulles Intl. 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 Brussels to Washington, D.C. Dulles Intl Airport?

What are the cheapest airlines flying from Brussels to Washington, D.C. Dulles Intl Airport round-trip?

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

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

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

How can I find direct flights from Brussels to Dulles Intl?

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

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

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Cheapest flights from Brussels to Dulles Intl
Explore the most affordable flight options available from Brussels to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 15, 2025.