$252 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 9/14. 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

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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Flights 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

Wed, Jan 21 - Tue, Jan 27
Scandinavian Airlines Logo
8:30 pm - 2:30 pmIAD-BRU
12h 00m1 stop
Scandinavian Airlines Logo
7:20 pm - 5:15 pmBRU-IAD
27h 55m2 stops
$445Scandinavian Airlines
Find Deal
Wed, Jan 21 - Tue, Jan 27
Scandinavian Airlines Logo
8:30 pm - 2:30 pmIAD-BRU
12h 00m1 stop
Scandinavian Airlines Logo
7:20 pm - 5:15 pmBRU-IAD
27h 55m2 stops
$446Scandinavian Airlines
Find Deal
Sun, Oct 5 - Tue, Oct 21
Scandinavian Airlines Logo
10:05 pm - 8:35 pmIAD-BRU
16h 30m2 stops
Scandinavian Airlines Logo
12:40 pm - 7:59 pmBRU-IAD
37h 19m2 stops
$448Scandinavian Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 15
Scandinavian Airlines Logo
10:05 pm - 6:20 pmIAD-BRU
14h 15m2 stops
Scandinavian Airlines Logo
7:00 pm - 7:59 pmBRU-IAD
30h 59m2 stops
$449Scandinavian Airlines
Find Deal
Sun, Oct 5 - Tue, Oct 21
Scandinavian Airlines Logo
10:05 pm - 3:20 pmIAD-BRU
11h 15m1 stop
Scandinavian Airlines Logo
12:40 pm - 7:59 pmBRU-IAD
37h 19m2 stops
$451Scandinavian Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 15
Scandinavian Airlines Logo
10:05 pm - 3:20 pmIAD-BRU
11h 15m1 stop
Scandinavian Airlines Logo
7:00 pm - 7:59 pmBRU-IAD
30h 59m2 stops
$452Scandinavian Airlines
Find Deal
Wed, Oct 22 - Tue, Oct 28
Scandinavian Airlines Logo
10:05 pm - 7:50 pmIAD-BRU
15h 45m1 stop
Scandinavian Airlines Logo
11:30 am - 6:15 pmBRU-IAD
35h 45m2 stops
$453Scandinavian Airlines
Find Deal
Sun, Oct 5 - Tue, Oct 21
Scandinavian Airlines Logo
10:05 pm - 3:20 pmIAD-BRU
11h 15m1 stop
Scandinavian Airlines Logo
4:00 pm - 7:59 pmBRU-IAD
33h 59m1 stop
$454Scandinavian Airlines
Find Deal
Tue, Sep 16 - Sat, Sep 20
 Logo
10:20 pm - 10:55 pmIAD-CRL
18h 35m2 stops
 Logo
5:05 pm - 1:30 pmCRL-IAD
26h 25m2 stops
Wed, Aug 20 - Wed, Aug 27
 Logo
9:45 am - 2:45 pmIAD-CRL
23h 00m3 stops
 Logo
5:35 pm - 1:30 pmCRL-IAD
25h 55m2 stops
Expert advice

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

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United Polaris offers lie-flat seats with aisle access, ideal for long-haul flights.


United's Wi-Fi varies; T-Mobile customers get free streaming on flights.

Brussels Airlines

Brussels Airlines' Premium Economy offers recliner seats, leg rests, and a 13.3” screen for entertainment.


In Business Class, enjoy a self-serve bar with snacks and beverages during your flight.

Lufthansa

Lufthansa's Premium Economy offers 50% more space and an extra checked bag up to 23kg.


Lufthansa provides 11 special meal choices, including gluten-free and halal options, pre-orderable 24 hours before departure.

Read more about Lufthansaby Jessica Macdonald
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

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.

Read more
Marisa Garcia

Marisa Garcia

Expert on Brussels Airlines

Marisa Garcia

Marisa Garcia

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.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Jessica Macdonald

Jessica Macdonald

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.

Read more
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.

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

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Washington, D.C. Dulles Intl Airport to Brussels.

Our data shows that the cheapest route for a return flight from Washington, D.C. Dulles Intl Airport to Brussels cost $606 and was between Washington, D.C. Dulles Intl Airport (IAD) and Brussels Bruxelles-National Airport (BRU). On average, the best prices are found if you fly this route. The average price for a return flight for this route is $606.

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 Mondays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Thursdays 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 September, where tickets cost $682 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,131 and $1,102 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 3 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Cheapest flight$252
Flight from Washington, D.C. to Charleroi Brussels

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 $252 for a one-way ticket and $445 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?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Washington, D.C. and Brussels, with SkyTeam 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

Brussels Airlines, United Airlines

Brussels Airlines, United Airlines

Friday

Brussels Airlines, United Airlines

Brussels Airlines, United Airlines

Saturday

Brussels Airlines, United Airlines

Brussels Airlines, United Airlines

Sunday

United 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

Brussels Airlines, United Airlines

Brussels Airlines, United Airlines

Friday

Brussels Airlines, United Airlines

Brussels Airlines, United Airlines

Saturday

Brussels Airlines, United Airlines

Brussels Airlines, United Airlines

Sunday

United 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
United AirlinesOverall score based on 8896 reviews
7.1Entertainment
7.7Boarding
6.6Food
8.1Crew
7.3Comfort
Airline reviews

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

8.0 ExcellentHal, Jul 2025IAD - MSY
Read more United Airlines reviews

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

No choice of food. Needed to pay more even for a can of coke!!!

The seats were really close together and hard to get comfortable. The food was okay. The cheese was amazing! I loved the cold towels they gave us.

When my flight was changed from delays they were quick to rebook me.

I really enjoyed how clean and big the aircraft was, as well as how friendly the crew was.

Airline left me stranded in the U.S. gave me an unrequested refund of 40% of booking and canceled my trip back! When I asked why, the said “we don’t have to tell you why”. “But you can rebook”. Never again! Paid 2x and rebooked on Austrian. What a joke!

Painful seats for a 10 hour flight. There’s a very hard flat board in the seat that goes up to half the back and after 7 hours it gets impossible to find the right position to avoid the pain.

I paid for the seat with more leg room but on the day of my departure my seat was changed. I brought it to the airline costumer service and he was able to change it back. The person sitting next to me had the same exact issue.

SAS is very good at service, the lounge was great, and flights were on time. Boarding is fast and efficient!

Great experience. Typically do klm to Amsterdam but may start taking this flight in future - greatxexperience.

The food was wonderful! The blankets and pillows were a nice touch and the staff were very accommodating, making frequent rounds to offer food, drink, etc. We were also told in advance when to expect meals to arrive, which is thoughtful. I liked the early notification about the lack of headphones as well, although unfortunately I'm not sure we received on for the first leg of the trip, which would have been nice to prepare for. The seats are a bit tight, and the bright monitors on the wall were on during an overnight trip, making it difficult to sleep for those close to them. .

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

Original flight was canceled, booked another one and find out when checking I was on the waiting list. Horrible experience

Actually this is my first time using airline I was in every single thing that happened throughout our journey, the appearance of the plane inside furnished about the seating the flight attendants and many many more I was so excited throughout thank you Brussels Airlines for the great service.

On board service was decent. I like the legroom at UA that seems to be more than in other airlines

It was really good because the employees were very nice and fun to talk to. The entertainment was nice because they had plenty of movies to watch.

Crew was enthusiastic. Meal was surprisingly good. They came to give water very frequently. Negative that the seat reclining didn't work

That was a short flight by the only time I could actually sleep

How can a national carrier and part of Lufthansa group not even provide complimentary water and a snack in such a long flight ?

Everything went well. I made my connection which is always a concern.

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

When I booked the flight, I wasn't aware that this was a "no frills" flight. No wifi, no reclining seat, no complimentary soft drinks.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

It was excellent! The plane left Chicago early. Arrived in Dublin early. The crew was excellent! It was a great experience.

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

The food was mediocre, the coffee was terrible. The entertaining selection was plentiful. They lost my checked luggage which put a damper on my 10-day vacation.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

Boarded with no problems. Sat on the tarmac for an hour before taking off. We were the last ones on our connecting flight. Didn't think we were going to make it. Our flight to Iceland was similarly delayed. When we've flown other airlines, pilots have tried to make up time while in the air. This doesn't seem to be something that Icelandair does. We made all of our flights, but it was stressful and we didn't think it was going to happen based on the time we arrived.

The flight was delayed and as a consequence we missed our connecting flight. Were stuck for another 6h in Reykyavik. Appreciated that we got a generous food voucher at least. Would have liked to see more information upon arrival including a person waiting for connecting flight travellers and informing already that we will not catch the flight and directing us to the office dealing with the matter; unfortunately that didnt happen and we hence first needed to find out whether flight had indeed left already and then locate the adequate office to help us with booking us on the next connecting flight. Also my suitcase broke and it is not clear whether it is happened on the leg with Iceland Air from DC to Reykyavik or on the leg with Lufthansa from Reykyavik to Frankfurt. Finally, understood that it is a low cost company but at least provision of earplugs for free would have been nice, instead of making them buy.

Great experience on Icelandair flight from Newark to Amsterdam by way of Reykjavík. Courteous and professional staff. Food was solid. Service - outstanding. Cabin was a little warm.

Good service. No complementary food for international flight. WiFi kinda pricey. Got the job done for the right price.

Still one of my favorite airlines, but the entertainment options were a bit lacking. It didn't help that my screen didn't work on one of the legs of the trip.

The plane was very small and the aisle was so narrow that every time someone walked by they rubbed against me, so it was very uncomfortable.

Everything was good. Only issue comes from being vegan and flying. The food options are super limited.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

Paid for a Premium seat...minimal recline, no footrest. Maybe slightly wider than a cheap economy seat. Zero chance of getting any rest on this plane

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

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