£46 Find Cheap Flights from London Heathrow Airport to Belgium

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 Belgium departing on 15/5. 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

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Cheap Flights from Heathrow to Belgium

Cheapest return prices found by our users on KAYAK in the last 72 hours
Brussels
Brusselsdirect£98
Ostend
Ostend2 stops£292
Brussels
Brusselsdirect£98
Ostend
Ostend2 stops£292

Book Cheap Heathrow to Belgium Plane Tickets

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

Thu, 29 Jan - Thu, 5 Feb
British Airways Logo
14:05 - 16:20
LHR
-
BRU
1h 15mdirect
British Airways Logo
20:35 - 20:45
BRU
-
LHR
1h 10mdirect
£98British Airways
Wed, 28 Jan - Wed, 4 Feb
British Airways Logo
08:35 - 10:50
LHR
-
BRU
1h 15mdirect
British Airways Logo
10:25 - 10:45
BRU
-
LHR
1h 20mdirect
£99British Airways
Fri, 6 Feb - Mon, 9 Feb
British Airways Logo
06:35 - 08:50
LHR
-
BRU
1h 15mdirect
British Airways Logo
20:45 - 20:55
BRU
-
LHR
1h 10mdirect
£100British Airways
Fri, 23 Jan - Sun, 25 Jan
British Airways Logo
14:45 - 17:00
LHR
-
BRU
1h 15mdirect
British Airways Logo
21:35 - 21:45
BRU
-
LHR
1h 10mdirect
£101British Airways
Sun, 11 Jan - Sun, 25 Jan
British Airways Logo
08:15 - 10:30
LHR
-
BRU
1h 15mdirect
British Airways Logo
21:35 - 21:45
BRU
-
LHR
1h 10mdirect
£102British Airways
Fri, 16 Jan - Sat, 17 Jan
British Airways Logo
08:35 - 10:50
LHR
-
BRU
1h 15mdirect
British Airways Logo
19:25 - 19:40
BRU
-
LHR
1h 15mdirect
£102British Airways
Mon, 26 Jan - Fri, 30 Jan
Brussels Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
21:10 - 21:20
BRU
-
LHR
1h 10mdirect
£103Brussels Airlines
Wed, 14 Jan - Fri, 16 Jan
Brussels Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
16:55 - 17:05
BRU
-
LHR
1h 10mdirect
£105Brussels Airlines
Fri, 9 Jan - Sun, 11 Jan
Brussels Airlines Logo
17:50 - 20:00
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
16:55 - 17:05
BRU
-
LHR
1h 10mdirect
£105Brussels Airlines
Thu, 29 Jan - Thu, 5 Feb
Multiple Airlines Logo
20:50 - 11:30
LHR
-
CRL
13h 40m1 stop
Multiple Airlines Logo
16:55 - 09:50
CRL
-
LHR
17h 55m1 stop
£135Multiple Airlines
Booking Insights

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?

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

The cheapest ticket to Belgium from London Heathrow Airport found in the last 72 hours was to Brussels, at £101 return. The most popular route is from London Heathrow Airport (LHR) to Brussels Bruxelles-National Airport (BRU), and the cheapest round-trip airline ticket found on this route in the last 72 hours was £101.

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

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 Belgium, 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 Belgium is January, when tickets cost £108 (return) on average. On the other hand, the most expensive months are July and April, when the average cost of return tickets is £144 and £131 respectively.

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

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

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

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

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 Belgium, 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 a flight from London Heathrow Airport to Belgium, you should book around 5 weeks before departure, which saves you about 27% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

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

Low seasonFebruary
Cheapest flight£46
Best time to beat the crowds (26% less expensive on average)
Most popular time to fly (59% 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
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 - 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.

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

    The cheapest time of day to fly to Belgium is generally at night, when retur flights cost £120 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 £461.

Reviews of the top 3 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.
7.7
KLMOverall score based on 1432 reviews
7.1Entertainment
7.6Comfort
7.2Food
7.8Boarding
8.4Crew
Airline reviews

Terrible last row seats many seats available but no offer to move to better seat

2.0 MediocreAnonymous, Dec 2025
AMS - BUD
Read more KLM reviews

Terrible last row seats many seats available but no offer to move to better seat

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

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

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

I was in a bulkhead seat and my tray table wasn't level. Eating was difficult.

Nice lounge but had a 5 hour layover which is a lot

Flight on time and priority boarding worked. I travelled economy although business was available as no flights are cheap these days and at least with BA loyalty card I get a baggage allowance for nothing. That made the flight comparable or even cheaper than the ‘budget’ alternative. As for catering and entertainment - not on a BA short haul economy ! At least we were offered biscuits and water! Catering for economy short haul has been reduced to the minimum - no tea or coffee or other drinks than water (from a large bottle with a paper cup on offer). They will say this is better for the environment, which it is, but proper waste management is still needed for empty packets etc. so actually it’s a money saver.

Audi visual not working for a whole group of seats in first class. How does a plane leave the main hub in such poor condition? How much that we can’t see so immediately is also compromised?

main meals are horrible but then you dont fly for the food

It was good. Couldn’t Check in online and select seats

It was great. Enough space and room for legs . Great service to.

⭐ British Airways Review — A Journey of Highs, Lows, and Lessons ⭐ I recently flew Business Class round-trip from Boston to Mumbai with British Airways, and my experience was a tale of two extremes — from disappointment to exceptional service, and then back to inconsistency. Boston → London: A Surprisingly Poor Start My journey began on a disappointing note. On a 6-hour Business Class flight, I was surprised to discover that there wasn’t a single proper vegetarian meal option available. I was offered a few bakery items only after repeatedly requesting something to eat. The flight attendant shrugged, offered no solution, and eventually — quite literally — threw some bread at me after much delay. This was not only disheartening, it was extremely surprising given my wonderful Business Class experience with BA last year. I stepped off that flight genuinely hungry and had to make a mad dash to the lounge just to get a proper meal. London → Mumbai: A Complete Turnaround The next sector restored my faith in British Airways. The entire crew was warm, welcoming, attentive, and genuinely caring. A special shoutout to Phiroze and the entire team serving the Business Class cabin — their professionalism, hospitality, and thoughtful service were extraordinary. They truly embodied what makes British Airways a global leader, and I am deeply grateful for the experience they provided. This is the BA I know and love. Mumbai → London: A Strange Meal Schedule This sector was generally fine, but the meal timing was puzzling. Lunch at 10:30 AM — for a Business cabin — felt unusual, and most passengers, including myself, barely touched it. The rest of the service was smooth, but the scheduling definitely needs a rethink. London → Boston: Mixed Experience Again The flight itself was decent, but the Business Lounge at Heathrow for this leg was a letdown. Arrived during lunch hours: no hot vegetarian options available Lounge area: dirty dishes everywhere Even after politely alerting the staff, the dishes were ignored and left uncleared For a premium cabin passenger — and at one of the world’s busiest international hubs — this was disappointing. Overall Impression My journey with British Airways felt inconsistent — two great sectors sandwiched between two that fell short of the BA standard. When BA is good, it is world-class. When it misses, the gap is noticeable. I genuinely hope the airline takes this feedback as constructive insight. I continue to believe in British Airways, and I commend the outstanding crew on the London → Mumbai sector — they were the highlight of my entire trip. With a little more focus on vegetarian meal availability, lounge service, and consistency across crews, BA can ensure every Business Class passenger experiences the premium journey they promise.

We were in business class and I had seat # 1. This was a night flight and after dinner was served, lights were dimmed and I went to sleep. The crew were loud and noisy so I didn’t get much sleep. I expect the crew to enjoy themselves but would Appreciate some decency in staying quiet while the passengers sleep

Have travelled business class with other airlines who profess to be the best in the world. They can however not beat the service and comfort that BA provide.

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

Information on your arrival and departure airports