£58 Find Cheap Flights from London Heathrow Airport to Belgium – Compare and Save

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KAYAK's insights & trends for Heathrow to Belgium flights

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

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

The cheapest ticket to Belgium from London Heathrow Airport found in the last 5 days was to Brussels, at £110 return. The most popular route is from London Heathrow Airport (LHR) to Brussels Bruxelles-National Airport (BRU), and the cheapest return airline ticket found on this route in the last 5 days was £110.

What is the cheapest time of day to fly to Belgium?

The cheapest time of day to fly to Belgium is generally in the afternoon, when retur flights cost £139 on average. Morning departures are around 138% more expensive than evening flights, on average. The most expensive time of day to fly to Belgium is generally in the morning, which is peak travel time and where the average cost of a ticket is £549.

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

The cheapest month for flights from London Heathrow Airport to Belgium is January, when tickets cost £114 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of return tickets is £164 and £157 respectively.

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

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

How far in advance should I book a flight from London Heathrow Airport to Belgium?

To get a below-average price on a flight from London Heathrow Airport to Belgium, you should book around 4 weeks before departure, which saves you about 26% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

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

Low season

February

Cheapest flight

£58
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (3% more expensive on average)
Flight from London Heathrow Airport to Brussels Airport

Flights from Heathrow to Belgium: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Heathrow to Belgium 
Verified travelerFlew with British Airways-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-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 - booking Belgium flights

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Belgium?

    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 Belgium.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London Heathrow Airport to Belgium 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 Belgium?

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

    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 from London Heathrow Airport to Belgium up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Heathrow to Belgium

 
Need help choosing which airline to fly with from Heathrow to Belgium? 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.
7.3
Brussels AirlinesOverall score based on 437 reviews
7.4Boarding
7.1Comfort
6.2Entertainment
7.9Crew
6.4Food
Airline reviews

Luggage delayed and delivers 24 hours later … broken. No resolution… no response. We don’t have a suitcase for the rest of our 2 week trip

2.0 MediocreAnonymous, Sept 2026
Read more Brussels Airlines reviews

Luggage delayed and delivers 24 hours later … broken. No resolution… no response. We don’t have a suitcase for the rest of our 2 week trip

It was great like always had all my 3 luggage and I got to my destination safely

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.

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

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.

My experience on this flight was good. The seat I had had a lot of leg room, but it was so close to the aisle that the flight attendants kept bumping into my visual monitor connected to my seat to watch tv.

It was fine, but it cost me twice as much to return to Boston as it took me to get to Heathrow from Boston two weeks prior. I flew on Jet Blue over and it was half the cost of British Air.

Staff and comfort were great but first choice meal was unavailable even in row 21.

My only issue with my flight to Jersey was that the Gate wasn't announced until shortly before boarding, otherwise all went well even with how busy Heathrow was. I appreciate British Airways staff's politeness, hospitality and positive energy.

Cabin crew was very good. No wifi and no doors to the suites

Very timly. Great service !!! Pick up after meals can be swifter.

Straightforward boarding process. Pilot kept us informed during the flight, especially highlighting the fact that we would experience "significant braking" when we landed on the short runway in Florence. The flight attendants were pleasant. My chief complaint is that I was stuffed into a seat in the rear of the aircraft (row 29?). The seat pitch was soooo tight that my knees were hard against the seat in front of me as soon as I sat down. One inch more room would have made a difference. Thankfully it was not a super long flight, but it was quite uncomfortable and I had to work out the kinks in my knees once I deplaned. Is it really necessary to have the rows this close together??

Paid for first class and was surprised that the seats were the same in economy except no one was in the middle seat. I expected an actual first class seat.

Captain handled the precaution of return to stand very well.

This flight had seats that were more comfortable than the trans-Atlantic flight I had come on. Boarding, however, was atrocious. There was no point in boarding groups since everyone ended up on the same bus to get on the plane. And the bus ride took forever to get to the plane. The snacks can barely even qualify as snacks. Make sure you bring your own or eat before getting on,

More options for your flight from Heathrow to Belgium

Complete your trip to Belgium with a hotel stay or car hire