£51 Find Cheap Flights from London Heathrow Airport to Belgium – 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 Belgium departing on 8/10. 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

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Belgium

Cheapest return prices found by our users on KAYAK in the last 72 hours
Brussels
Brusselsdirect£104
Ostend
Ostend2 stops£270
Brussels
Brusselsdirect£104
Ostend
Ostend2 stops£270

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

Sun, 13 Sep - Sun, 20 Sep
Brussels Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£104Brussels Airlines
Fri, 30 Oct - Fri, 13 Nov
Brussels Airlines Logo
06:50 - 08:50
LHR
-
BRU
1h 00mdirect
Brussels Airlines Logo
21:10 - 21:20
BRU
-
LHR
1h 10mdirect
£104Brussels Airlines
Sat, 19 Sep - Tue, 22 Sep
British Airways Logo
07:45 - 09:55
LHR
-
BRU
1h 10mdirect
British Airways Logo
19:55 - 20:05
BRU
-
LHR
1h 10mdirect
£105British Airways
Thu, 8 Oct - Sun, 11 Oct
Brussels Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
£105Brussels Airlines
Thu, 17 Sep - Tue, 22 Sep
Brussels Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
Brussels Airlines Logo
16:55 - 17:05
BRU
-
LHR
1h 10mdirect
£105Brussels Airlines
Mon, 26 Oct - Thu, 29 Oct
British Airways Logo
17:40 - 19:55
LHR
-
BRU
1h 15mdirect
British Airways Logo
20:35 - 20:45
BRU
-
LHR
1h 10mdirect
£107British Airways
Thu, 10 Sep - Mon, 14 Sep
British Airways Logo
07:45 - 09:55
LHR
-
BRU
1h 10mdirect
British Airways Logo
20:50 - 20:55
BRU
-
LHR
1h 05mdirect
£108British Airways
Mon, 21 Sep - Tue, 29 Sep
Multiple Airlines Logo
17:55 - 20:00
LHR
-
BRU
1h 05mdirect
Multiple Airlines Logo
14:25 - 17:40
BRU
-
LHR
4h 15m
1 stop
£113Multiple Airlines
Tue, 15 Sep - Tue, 22 Sep
Multiple Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
Multiple Airlines Logo
17:30 - 20:40
BRU
-
LHR
4h 10m
1 stop
£115Multiple Airlines
Wed, 27 Jan - Wed, 10 Feb
Multiple Airlines Logo
06:50 - 08:50
LHR
-
BRU
1h 00mdirect
Multiple Airlines Logo
10:00 - 13:00
BRU
-
LHR
4h 00m
1 stop
£115Multiple 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 5 days was to Brussels, at £113 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 £113.

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

The average price for all round-trip flights from London Heathrow Airport to Belgium depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Belgium is generally at night, when retur flights cost £126 on average. Morning departures are around 120% 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 £496.

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 £113 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £149 and £148 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 Thursday is the most expensive. Flying from Belgium back to London Heathrow Airport, the best deals are generally found on Tuesday, 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 4 weeks before departure, which saves you about 22% 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

£51
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly and prices are also 3% lower 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.

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 431 reviews
7.4Boarding
6.2Entertainment
7.9Crew
6.3Food
7.0Comfort
Airline reviews

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

10.0 ExcellentAnonymous, Jul 2026
OUA - BRU
Read more Brussels Airlines reviews

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.

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

Not enough food for a 4 hour trip…Lack of entertainment and with no WIfi accessibility I didn’t figure it out how to access free WiFi

Not good because in this cancelled and then rebooked flight BA put me and my husband in both middle seats when we were originally seated together in original flight and i was in aisle. I hate sitting in the middle. BA food needs to be better. It was just ok. Thanks though to screw and everyone one for safe flight

Crew members were thorough in checking seatbelts and whatnot which makes me feel cared for because passenger safety is a main concern.

I was sent an email that said my card payment was not verified. When I spoke to an agent , he said my card was not verified and the flight I thought I had to booked was no longer available so I booked another flight on another airline(United). Later I got flight updates , etc., concerning my supposed first flight. So if I was charged for this flight on British Airways/American airlines, I need a refund.

The crew made it a great flight. They were friendly and attentive. They made me want to fly British Airways again.

BA has not been handling priority luggage with any special priority. This time our luggage was distinctly very slow to arrive, well after the first half of items to arrive. Business class flights cost a lot and it would be nice to have that reflected in the speed of baggage handling! (I note that this has worsened in our long experience of BA.) On a different note, we spent 2.5 hours on the plane after landing because of an airport mishap at Boston Logan. The pilot provided reasonably frequent update but more could have been done to ensure passenger comfort, such as more beverage and maybe snack services.

I purchased premier economy seats but I was seated one row off and was sitting in economy my bottle of water and cookie did not compare to the menus handed OP it in premier.

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,

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

Information on your arrival and departure airports