$334 Find Cheap Flights from Washington, D.C. to Brussels

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Brussels departing on 6/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Brussels

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Brussels.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Brussels.
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Everything you should know

Cheapest round-trip
$634
Typical prices: $844-$629
Scandinavian Airlines
Thu 10/22Tue 10/27
IAD - BRU • 1 stop
Cheapest non-stop
$1,132
Typical prices: $1,076-$761
United Airlines
Mon 7/20Thu 8/27
IAD - BRU • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Lufthansa's Premium Economy includes extra space and bags.
United's Wi-Fi offers free streaming for T-Mobile users.
Expert advice
Expert advice
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Top airlines
Cheapest • from $629 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines and Brussels Airlines. Average duration is 7h 47m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
Insights
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When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 43% compared to booking last minute.
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Flight Deals

Cheap Flights from Washington, D.C. to Brussels (IAD-BRU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Brussels that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Brussels

Thu, Oct 22 - Tue, Oct 27
Scandinavian Airlines Logo
8:20 pm - 7:50 pm
IAD
-
BRU
17h 30m
1 stop
Scandinavian Airlines Logo
7:15 pm - 6:15 pm
BRU
-
IAD
28h 00m
1 stop
$634Scandinavian Airlines
Wed, Sep 9 - Mon, Sep 14
Scandinavian Airlines Logo
8:20 pm - 2:35 pm
IAD
-
BRU
12h 15m
1 stop
Scandinavian Airlines Logo
10:20 am - 5:00 pm
BRU
-
IAD
12h 40m
1 stop
$639Scandinavian Airlines
Mon, Sep 21 - Sun, Oct 11
Scandinavian Airlines Logo
8:20 pm - 7:50 pm
IAD
-
BRU
17h 30m
1 stop
Scandinavian Airlines Logo
7:00 pm - 5:00 pm
BRU
-
IAD
28h 00m
2 stops
$640Scandinavian Airlines
Sun, Sep 20 - Sun, Oct 11
Scandinavian Airlines Logo
8:20 pm - 2:35 pm
IAD
-
BRU
12h 15m
1 stop
Scandinavian Airlines Logo
10:20 am - 5:00 pm
BRU
-
IAD
12h 40m
1 stop
$648Scandinavian Airlines
Wed, Sep 9 - Wed, Sep 23
Scandinavian Airlines Logo
8:20 pm - 7:50 pm
IAD
-
BRU
17h 30m
1 stop
Scandinavian Airlines Logo
10:20 am - 5:00 pm
BRU
-
IAD
12h 40m
1 stop
$652Scandinavian Airlines
Sun, Aug 23 - Tue, Dec 1
Scandinavian Airlines Logo
8:20 pm - 2:35 pm
IAD
-
BRU
12h 15m
1 stop
Scandinavian Airlines Logo
7:00 pm - 5:15 pm
BRU
-
IAD
28h 15m
2 stops
$655Scandinavian Airlines
Sun, Sep 20 - Sun, Oct 11
Scandinavian Airlines Logo
8:20 pm - 11:00 pm
IAD
-
BRU
20h 40m
1 stop
Scandinavian Airlines Logo
7:00 pm - 5:00 pm
BRU
-
IAD
28h 00m
2 stops
$656Scandinavian Airlines
Wed, Sep 9 - Wed, Sep 23
Scandinavian Airlines Logo
8:20 pm - 2:35 pm
IAD
-
BRU
12h 15m
1 stop
Scandinavian Airlines Logo
7:10 pm - 5:00 pm
BRU
-
IAD
27h 50m
1 stop
$659Scandinavian Airlines
Thu, Aug 27 - Tue, Sep 1
Multiple Airlines Logo
5:25 pm - 10:55 pm
IAD
-
CRL
23h 30m
2 stops
Multiple Airlines Logo
12:20 pm - 3:10 pm
CRL
-
IAD
32h 50m
2 stops
$816Multiple Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
9:55 am - 3:45 pm
IAD
-
CRL
23h 50m
2 stops
Multiple Airlines Logo
5:35 pm - 3:10 pm
CRL
-
IAD
27h 35m
2 stops
$842Multiple Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Brussels flights

Get data-powered insights and trends into flights from Washington, D.C. to Brussels to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Brussels?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Brussels departing in October.

What is the cheapest Washington, D.C. Dulles Intl Airport to Brussels flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Washington, D.C. Dulles Intl Airport to Brussels costs $863 on the route between Washington, D.C. Dulles Intl Airport (IAD) and Brussels Bruxelles-National Airport (BRU). It is also the most popular route.

What’s the cheapest day of the week to fly from Washington, D.C. to Brussels?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Brussels clicked on KAYAK for each day over the last 12 months.

When flying from Washington, D.C. to Brussels, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Brussels, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Brussels is July, where tickets cost $201 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $612 and $512 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Brussels, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Brussels, you should book around 7 weeks before departure, which saves you about 43% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Expert advice

Expert advice for your flight from Washington, D.C. to Brussels

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Marisa Garcia

Marisa Garcia

Expert on Brussels Airlines

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Good to know

Cheapest flight$334
Flight from Washington Dulles Airport to Brussels Airport

When to book flights from Washington, D.C. to Brussels

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Brussels based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington, D.C. to Brussels flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Brussels was $334 for a one-way ticket and $629 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Brussels?

    Yes, you’ll need a passport to travel to Brussels from Washington, D.C..

  • Which airports will I be using when flying from Washington, D.C. to Brussels?

    Washington, D.C. is served by only 1 airport and there are 2 airports in Brussels. You will leave Washington, D.C. from Washington, D.C. Dulles Intl and you will be arriving in Brussels at one of these airports: Brussels Bruxelles-National or Charleroi Brussels.

  • Which aircraft models fly most regularly from Washington, D.C. to Brussels?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Brussels?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Brussels, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Brussels?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Brussels.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Brussels?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Brussels?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Brussels with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Brussels?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Brussels from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Washington, D.C. to Brussels?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. Dulles Intl to Brussels.
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Brussels, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Brussels

Monday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

Thursday

United Airlines

United Airlines

Friday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

Saturday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

Sunday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

See more direct flights

Direct returns

Brussels to Washington, D.C. Dulles Intl

Monday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

Thursday

United Airlines

United Airlines

Friday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

Saturday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

Sunday

Brussels Airlines,United Airlines

Brussels Airlines,United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Washington, D.C. to Brussels

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Brussels. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Brussels? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Scandinavian AirlinesOverall score based on 1769 reviews
7.3Comfort
6.7Entertainment
6.7Food
8.0Crew
7.6Boarding
Airline reviews

The stewardess was incredibly rude. The gave you only one drink with dinner.

6.0 GoodAnonymous, Apr 2026
IAD - CPH
Read more Scandinavian Airlines reviews

The stewardess was incredibly rude. The gave you only one drink with dinner.

Cancelled flight, wasn't refunded paid selected seats. Poor customer service. Called airline and they didn't realize the flight was cancelled until several hours after the email notice was sent.

The worst with the trip was the space in economy, my knees are still hurting. There was no way to control personal air by turning a knob above you, it was way to hot on both rides. During the night flight they allowed 2 people from across the aile which was narrow to sit and talk for 7 hours while also using tablets and the flashlight from their phones pointing into the row where I sat at times. They allowed people with way too large baggage to bring onboard. I paid way too much for the ticket ($1,364} for economy. Kayak misinformed me to get cancellation insurance that was only valid for a very short time (less than 12 hours) and was over one hundred dollars. Hotel booking was incorrect, I had the room booked myself at the hotel, only double or larger rooms available which I paid over 400 dollars for. I will never fly with SAS again unless there is no other alternative.

Crew members were excellent. The seat wasn’t the best as well as a food options.

5 of my 7 pieces of luggage are missing and they cant call to find out where it is. I have to fill out a form and wait for them to mail it to me in several days (if they find it). That does not work for my travel itinerary. I need my full ticket cost refunded please.

Fantastic. The only thing - out of my six luggage one was lost in Copenhagen, however it was delivered Home 3 Days later so all great..

The crew was friendly, the flight was pleasant. Thank you for your service!

Our trip plan from Kayak stated we were flying SAS. That was not true. The first leg was a Delta flight. We wasted 25 minutes before finding out to check in with the correct airline. Then our SAS flight for the second leg arrived 25 minutes late, and our third leg flight with SAS closed the gate knowing the flight delay was SAS’s fault, and that this flight would only be backed up 5 minutes. The final kicker was that between Delta and SAS, they lost all our checked luggage.

Flight was completely full January 9th? I problem i had the stewardess was bumping into me constantly walking by? very annoying.. on Austrian air I dint have this issue at all...

Amazing! Everyone was so nice and the food was so good!!

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

Our flight from Dublin to Coruna did not exist any more. Apparently it was cancelled in February and I was not advised, nor was I offered any flights for rebooking. Happily Aer Lingus found another flight to another city in Spain that was 500 miles from Coruna; I had to pay for a hotel overnight and a revise my rental car that incurred additional costs, and I did not get to Coruna for another 24 hours. I was not at all impressed with Kayak or Chatdeal or Hertz.

OK overall. Flight was delayed Crew on flight was good

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

This was the smoothest flight I've ever taken with any airline, including Aer Lingus. Typically, there are moments when I feel afraid, but from take off (miraculously seamless!) to cruise, to landing this was a perfect flight. Thank you!

Poor. Plane left EWR late hence missed connecting flight in Dublin. No pro active info from flight staff on connection, only when probed a couple of lies on where we would dock, and on lilelyhood catching connecting flight. Lies as they will have known our EWR-DUB would be parked furthest away from the transit spit - lying it would be next to the AMS flight.

The crew was friendly. The plane was comfortable. In-flight wifi didn't work well at all. The ride was quite turbulent but understandable given the weather.

I flew economy class. Seats were very good and the crew was excellent

Punctual, smooth flight. Crew excellent and cabin very clean. Paid for WiFi but once you close out you cannot get back in even if you paid for entire flight.

Flight crew was superb. Meal was one of the meals at altitude I’ve had

One of the best flight experiences I've have had in along time. Would fly with them again.

WE didint profit of food , but for the other think all was good

Spacious and clean aircraft. Good food. Economy will always be squeezed but thankfully I had an aisle seat for stretching exercises. Good selection of movies, particularly Spike Lee joint.

Unfriendly, 8 hours delayed, no lounge access even flying business. Don’t fly Brussels

Flight from London was delayed so missed the connecting flight. Taking 2 days to get to destination which should have only taken a few hours.

Too cramped up for the better seats I paid for.

I didn’t like my seat in my return flight from Montreal to Orlando at all; considering I paid extra for better seats. That middle seat was cramped up way too much.

Suitcase didn’t arrive to Stockholm. Chairs y comfy and not even water is offered

Bad baggage and people management at boarding forcing me to dispatch my bad despite being the perfect size and respecting everything perfectly, whereas many did not and many free empty spots on the plane as usual… making me loose time and my planned bus at arrival to go to Geneva. Costing me 100 euros extra! So Brussels airlines needs to refund me

I never board the flight. My visa was delayed and when I tried calling Kayak, no one answer and I still have not heard from anyone.

All great. Very efficient. Good emails that kept us in the know

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

Was a bit surprised that Icelandair flies a domestically configured 757s on long-haul flights to Iceland (no lie-flat seats in business class).

When you consider the price I ended up paying for everything. This was not a good deal! I had no idea that this airline had changed to a bargain basement no frills airline. So, it was disappointing to have to pay for every little thing. The only thing included was water and coffee. You have to pay for everything else! So I just felt nickel and dime.

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Everything you need to know for your flight from Washington, D.C. to Brussels

Information on your arrival and departure airports