£51 Find Cheap Flights from London Heathrow Airport to Brussels – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Brussels departing on 9/8. 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 London to Brussels, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Brussels, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£101
Typical prices: £187-£118
Brussels Airlines
Thu 9/7Sun 12/7
LHR - BRU • Direct
Cheapest direct flights
£101
Typical prices: £154-£104
Brussels Airlines
Wed 12/8Wed 19/8
LHR - BRU • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
At Heathrow, BA may post gates late, so watch screens closely and move fast.
BA boarding can mean a bus gate with a short window, so head over immediately.
Expert advice
Expert advice
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Expert advice
Expert advice
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Top airlines
Cheapest • from £101 (return)
Best reviews • 7.2 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
You can fly direct with British Airways and Brussels Airlines. Average duration is 1h 12m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 84% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 5 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Brussels!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Heathrow to Brussels (LHR-BRU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow 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 return flight deals from Heathrow to Brussels

Thu, 9 Jul - Sun, 12 Jul
Brussels Airlines Logo
17:50 - 20:00
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
16:55 - 17:05
BRU
-
LHR
1h 10mdirect
£101Brussels Airlines
Tue, 28 Jul - Tue, 4 Aug
Brussels Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£102Brussels Airlines
Thu, 9 Jul - Sun, 12 Jul
Brussels Airlines Logo
06:50 - 08:55
LHR
-
BRU
1h 05mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£103Brussels Airlines
Thu, 10 Sep - Sun, 13 Sep
Brussels Airlines Logo
06:50 - 08:55
LHR
-
BRU
1h 05mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£103Brussels Airlines
Sat, 11 Jul - Tue, 14 Jul
Brussels Airlines Logo
06:50 - 08:55
LHR
-
BRU
1h 05mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£104Brussels Airlines
Mon, 27 Jul - Fri, 31 Jul
Brussels Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£105Brussels Airlines
Sat, 11 Jul - Tue, 14 Jul
Brussels Airlines Logo
06:50 - 08:55
LHR
-
BRU
1h 05mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£106Brussels Airlines
Sat, 11 Jul - Sat, 18 Jul
Brussels Airlines Logo
06:50 - 08:55
LHR
-
BRU
1h 05mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£106Brussels Airlines
Fri, 10 Jul - Fri, 24 Jul
Multiple Airlines Logo
20:50 - 08:00
LHR
-
CRL
10h 10m
1 stop
Multiple Airlines Logo
16:00 - 22:40
CRL
-
LHR
7h 40m
2 stops
£187Multiple Airlines
Thu, 16 Jul - Thu, 30 Jul
Multiple Airlines Logo
20:50 - 11:30
LHR
-
CRL
13h 40m
1 stop
Multiple Airlines Logo
21:05 - 09:10
CRL
-
LHR
13h 05m
1 stop
£189Multiple Airlines
Booking Insights

KAYAK’s insights & trends for Heathrow to Brussels flights

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

How much is a return flight from London Heathrow Airport to Brussels?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Brussels departing in July.

What is the cheapest London Heathrow Airport to Brussels flight route?

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

The cheapest return flight from London Heathrow Airport to Brussels costs £124 on the route between London Heathrow Airport (LHR) and Brussels Bruxelles-National Airport (BRU). It is also the most popular route.

What’s the cheapest day of the week to fly from London Heathrow Airport to Brussels?

The average price of all round-trip flights from London Heathrow Airport to Brussels clicked on KAYAK for each day over the last 12 months.

For London Heathrow Airport to Brussels, Friday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Brussels back to London Heathrow Airport, the best deals are generally found on Tuesday, with Saturday being the most expensive.

What is the cheapest month to fly from London Heathrow Airport to Brussels?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow 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 London Heathrow Airport to Brussels is December, where tickets cost £69 (return) on average. On the other hand, the most expensive months are February and May, where the average cost of round-trip tickets is £89 and £89 respectively.

How far in advance should I book a flight from London Heathrow 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 London Heathrow 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 London Heathrow Airport to Brussels, you should book around 5 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Expert advice

Expert advice for your flight from Heathrow 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
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, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Good to know - Cheap tickets from London Heathrow Airport to Brussels

Cheapest flight£51
Flight from London Heathrow Airport to Brussels Airport

When to book flights from Heathrow to Brussels

Are your dates flexible? Find out the best times to travel from Heathrow to Brussels based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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.

Flights from Heathrow to Brussels: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Heathrow to Brussels 
Verified travelerFlew with British Airways
LHR
-
BRU
Feb 2024
Have patience. Heathrow is crowded and they don’t post the gate until the last minute. Be prepared to travel a long distance to the gate once it gets posted and go immediately.
Verified travelerFlew with British Airways
LHR
-
BRU
Jan 2024
Be prepared. BA didn't provide a gate until 45 minutes pre-boarding, with only a 15-20 minute window for passengers to "board" a bus, to take them to their plane.

FAQs for booking London Heathrow Airport to Brussels flights

  • What is the cheapest flight from London Heathrow Airport to Brussels?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Brussels was £51 for a one-way ticket and £101 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Brussels?

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at one of these airports: Brussels Bruxelles-National or Charleroi Brussels.

  • Which aircraft models fly most regularly from London Heathrow Airport to Brussels?

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

  • Which airline alliances offer flights from London Heathrow Airport to Brussels?

    oneworld, and Star Alliance are the airline alliances operating flights between London Heathrow Airport and Brussels, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from London Heathrow Airport 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 London Heathrow Airport to Brussels.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Brussels?

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

  • What is the Hacker Fare option on flights from London Heathrow Airport to Brussels?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Brussels with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport 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 London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from London Heathrow Airport to Brussels?

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

Direct departures

London Heathrow to Brussels

Monday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Tuesday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Wednesday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Thursday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Friday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Saturday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Sunday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

See more direct flights

Direct returns

Brussels to London Heathrow

Monday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Tuesday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Wednesday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Thursday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Friday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Saturday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

Sunday

British Airways,Brussels Airlines

British Airways,Brussels Airlines

See more direct flights

Reviews of the top airlines flying from Heathrow to Brussels

 
See real verified KAYAK customer reviews for airlines flying from London 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 Heathrow 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.
7.2
Brussels AirlinesOverall score based on 412 reviews
7.3Boarding
7.9Crew
6.2Entertainment
6.3Food
7.0Comfort
Airline reviews

Everything was better but france airlines more better than them

8.0 ExcellentTansia, May 2026
FIH - BRU
Read more Brussels Airlines reviews

Everything was better but france airlines more better than them

Good leg room for people of all sizes. Pleasent crew.

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

Seats not as comfortable as I had hoped. Food was very nice, service was fine. Entertainment options very nice. Had thought the premium economy was a more plus 2-3-2 layout but it was a 2-4-2 with seats not as wide as I had expected.

I flew four flights on British Airways within two weeks. I was unable to download the boarding pass to my phone for any of the four flights. I could check-in for my flight but the system would not give me boarding pass. I tried multiple ways and multiple times. I discovered many other passengers also had the same issue with their boarding passes. No explanation or acknowledgement by BA.

The plane was a long way from departure lounge. The plane looked tired but got us there.

Lovely big plane. Excellent take off and landing. Cabin crew were so nice. Flight in time no delays

Because our ABZ-LHR flight was cancelled by BA for reasons they refuse to tell us--not weather--we did not make this flight and were booked on the following day. BA offered no assistance to us on the phone or in the airport, and we had to find a hotel at Heathrow on our own.

Horrible - flight was delayed by 6 hours - we boarded, were made to de-board due some technical fault; aircraft changed; special meals request on new flight - all went awry. Landed in Dulles airport; breezed thru immigration; as Business Class passengers or baggage was delivered almost 90 minutes after landing; air tags indicated the bags were just near the carousel but the unhelpful BA staff - Maria and Ghina refused to give any update - palming it off on some imaginary invisible “manager” despite air tags evidence showing it right there. So about 50-60 passengers waiting and getting infuriatingly impatient for their bags coz one container was not delivered. Finally after much argument by some other passengers Maria condescended to go to the “ramp” and within 5 minutes the baggage was delivered miraculously. Question is why couldn’t she have done it one hour earlier ? Poor poor experience once again on Business Class BA.

Poor service, antiquated plane with 2-3-2. B-class config upstairs. Tight and not comfortable—not what I expected for paying B-class! AND my bag didn’t make the transfer, bag will be delivered the day after it lands!

Cheap Flight Fares would not provide booking info. I canceled the reservation and we arbitrated with American Express. They provided erroneous info to Amex and it was determined that C.F.F. deserved the price of the ticket. Worse experience I've ever had.

Seating space is appalling. Seats and all surrounding area in "Economy" is built for individuals shorter than 4' 10" and below 120 lbs. Ridiculous. While I'm not expecting fine dining, the food was the worst airplane food that I can recall.

Business class lounge for my gate was closed and no email was sent, causing me to walk back and forth to different gates, etc for over 20 minutes one way. Flight entertainment was mediocre with very poor choices especially for business class cabin. Original flight was cancelled and rebooking was difficult and no reason given for cancellation.

Everything you need to know for your flight from Heathrow to Brussels

Information on your arrival and departure airports