The cheapest times to fly from IAD to BRU are

  • January 1st to March 25th
  • May 14th to June 3rd
  • September 17th to December 9th (except the week of September 24th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAD to BRU is late January. Prices can be as high as $1339 for Saturday flights during early August, or as low as $489 for Monday flights around late January.


When to Fly to Brussels

Flying from Washington, DC (IAD) to Brussels (BRU) will usually cost between $494 to $1036 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January with an average ticket price of $519. Due to high demand the most expensive time to fly is early August, with an average price of $1134. Planning your trip to low-cost times can easily save you $614 on economy flights and even more on first-class flights. Generally, any price below $680 can be considered a good price for a round-trip IAD to BRU flight.

See below for a graph of average weekly prices for the IAD to BRU route. All prices are for round-trip tickets in USD.

IAD to BRU Flight Prices

Compared to other flights, the IAD to BRU flight is cheaper than the average and costs less than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to BRU, and Wednesday the cheapest day to fly back into IAD. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $91 (11%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $662. Return trip prices are from the BRU to IAD flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from IAD to BRU can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 7 hour 58 minutes may be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from IAD to BRU while comparing.

Destination alternative #1: Schiphol Airport (AMS) in Amsterdam

  • 98 miles (158 km) away from BRU
  • Usually 5.44% less expensive than BRU
  • Nonstop flights available

See IAD to AMS flights


Flight Hacking IAD to BRU

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from IAD to BRU — but Champion Traveler does!

Hack #1: London (IAD > LHR > BRU)

  • Price for both tickets: $615
  • Average savings: $66 (9.63%)

See IAD to LHR flights


Flight Questions Answered

Still have questions about flying from IAD to BRU? We’ve got answers.

Which airlines fly this route?

You can find 27 major airlines flying this route most often: Aer Lingus, Aeroflot, Air Canada, Air Europa, Air France, Alaska, Alitalia, American, Austrian, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, LOT, Lufthansa, Royal Air Maroc, SAS, Singapore Airlines, SWISS, Tap Air Portugal, THAI, Turkish Airlines, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Brussels National Airport to Washington Dulles International Airport?

The distance between the two airports is roughly 3881 miles or 6246 kilometers.

How long does it take to fly from IAD to BRU?

The real-world flight time for a nonstop IAD to BRU flight is about 7 hour 58 minutes.

How many flights go between Washington, DC and Brussels?

It depends on the day of the week and the date, but a typical day might have around 92 available flights from IAD to BRU.


Airport Location Info


Departing Airport

Origination code IAD
Origination airport name Washington Dulles International Airport
City Washington, DC
Country the United States
Latitude 38.9
Longitude -77.5

Return Airport

Destination code BRU
Destination airport name Brussels National Airport
City Brussels
Country Belgium
Latitude 50.9
Longitude 4.5


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.