£36 Find Cheap Flights from Belgium to London – 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 to London departing on 22/9. 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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Flight Deals

Cheap Flights from Belgium to London

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

Wed, 26 Aug - Wed, 2 Sep
Brussels Airlines Logo
16:55 - 17:05
BRU
-
LHR
1h 10mdirect
Brussels Airlines Logo
17:55 - 20:00
LHR
-
BRU
1h 05mdirect
£93Brussels Airlines
Thu, 27 Aug - Mon, 31 Aug
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
Brussels Airlines Logo
17:55 - 20:00
LHR
-
BRU
1h 05mdirect
£94Brussels Airlines
Fri, 25 Sep - Mon, 28 Sep
Brussels Airlines Logo
16:55 - 17:05
BRU
-
LHR
1h 10mdirect
Brussels Airlines Logo
06:50 - 08:55
LHR
-
BRU
1h 05mdirect
£94Brussels Airlines
Sat, 24 Oct - Mon, 26 Oct
Brussels Airlines Logo
21:20 - 21:35
BRU
-
LHR
1h 15mdirect
Brussels Airlines Logo
11:05 - 13:15
LHR
-
BRU
1h 10mdirect
£94Brussels Airlines
Wed, 9 Sep - Sun, 13 Sep
Multiple Airlines Logo
06:20 - 18:05
CRL
-
LTN
12h 45m
1 stop
Multiple Airlines Logo
21:20 - 07:35
LTN
-
CRL
9h 15m
1 stop
£94Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep
Multiple Airlines Logo
20:35 - 07:35
CRL
-
LTN
12h 00m
1 stop
Multiple Airlines Logo
15:20 - 22:30
LTN
-
CRL
6h 10m
1 stop
£94Multiple Airlines
Thu, 10 Sep - Mon, 14 Sep
Multiple Airlines Logo
06:30 - 11:35
CRL
-
LTN
6h 05m
1 stop
Multiple Airlines Logo
08:15 - 21:25
LTN
-
CRL
12h 10m
1 stop
£95Multiple Airlines
Sat, 22 Aug - Tue, 25 Aug
British Airways Logo
20:05 - 20:10
BRU
-
LHR
1h 05mdirect
British Airways Logo
16:50 - 19:10
LHR
-
BRU
1h 20mdirect
£109British Airways
Fri, 21 Aug - Sun, 23 Aug
British Airways Logo
21:30 - 21:35
BRU
-
LHR
1h 05mdirect
British Airways Logo
07:40 - 09:50
LHR
-
BRU
1h 10mdirect
£110British Airways
Sat, 22 Aug - Sun, 23 Aug
British Airways Logo
20:05 - 20:10
BRU
-
LHR
1h 05mdirect
British Airways Logo
07:40 - 09:50
LHR
-
BRU
1h 10mdirect
£111British Airways
Booking Insights

KAYAK's insights & trends for flights to London

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

What is the cheapest flight to London?

These are the best return prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to London was found on the route from Brussels, at £93 return. The most popular connection is from Brussels to London, while KAYAK users have found return deals for as low as £93 in the last 5 days.

What is the cheapest day to fly to London?

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

Based on KAYAK data, the cheapest day to fly to London is Tuesday where round-trip tickets can be as cheap as £132. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are £315 on average.

What is the cheapest month to fly to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to London, 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 to London is March, where tickets cost £117 on average for return flights. On the other hand, the most expensive months are July and May, where the average cost of tickets from Belgium is £165 and £165 respectively. For one-way flights, the best month to travel is November with an average price of £96.

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

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

The cheapest time of day to fly to London is generally in the afternoon, when round-trip flights cost £138 on average. The most expensive time of day to fly to London is generally in the morning, which is peak travel time and where the average cost of a ticket is £169.

What is a good deal for flights to London?

If you’re looking for cheap airfare to London, 25% of our users found tickets to London for the following prices or less: From Brussels Bruxelles-National Airport £148 return.

How far in advance should I book a flight to London?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to London, 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, you should book around 5 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Which is the cheapest airport to fly into in London?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in London is London Stansted Airport (STN), with an average flight price of £84.

Good to know - Cheap tickets from Belgium to London

Low season

September

Cheapest flight

£36
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flight from Charleroi Brussels to London Stansted Airport

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

Insights shared by verified travellers who flew the route from Belgium to London 
Verified travelerFlew with British Airways
BRU
-
LHR
Dec 2024
Give yourself ample time for connecting flights. Lhr is a massive airport
DorothyFlew with British Airways
BRU
-
LHR
Jan 2024
Don’t forget the time on each end for baggage and passport control

FAQs - booking London flights

  • What is the cheapest flight to London?

    In the last 5 days, the cheapest flight deal to London was found on the route from Brussels, at £93 return. The most popular connection is from Brussels to London, while KAYAK users have found return deals for as low as £93 in the last 5 days.

  • Which London airport is closest to central London?

    Out of the 6 airports in London, London City is the nearest to the city center (8 miles). You'll travel 14 miles to reach the center of London if you land in London Heathrow Airport, 24 miles if you land in London Gatwick Airport, and 28 miles if you arrive in London Luton Airport.

  • How much is a flight to London?

    On average, a flight to London costs £135. The cheapest price found on KAYAK in the last 2 weeks cost £65 and departed from Brussels Bruxelles-National Airport.

  • How does KAYAK find such low prices on flights to London?

    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 to London.

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

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

  • What is the Hacker Fare option on flights to London?

    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 London 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 to London?

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

Top tips for finding cheap flights to London

  • Looking for a cheap flight from Belgium to London? 25% of our users found flights on this route for £118 or less one-way and £148 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Reviews of the top airlines flying from Belgium to London

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Belgium to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to London? 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 427 reviews
7.0Comfort
7.9Crew
7.4Boarding
6.2Entertainment
6.3Food
Airline reviews

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

8.0 ExcellentAlexandre, Jul 2025
BRU - GVA
Read more Brussels Airlines reviews

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

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 ?

Terrible seats. Whoever designed the seats should try taking a long flight in it themselves.

Food quality is deteriorating each time, last year was very good. I avoid the plane food lately.

Been flying on various airlines, all over the world, for 50+ years. The food on Brussels Air was easily the worst I ever endured.

I have traveled to probably over a hundred locations worldwide, but had only one mixup of airport in Shanghai. Until Iceland and Stockholm. Reykjavik has 2 airports, Stockholm 4 (!). Please indicate clearly when a departure flight is scheduled from an aiport other than the international aiport. That would greatly reduce stress. Thanks

More than one hour detail with no explanation and no compensation

my husband's monitor did not work. there was a visibly ill family in my husband's row.

we had to unexpectedly check a bag, the flight was late getting in

The seats are not comfortable if you are not tall.

The flight was cancelled and I was re-routed via an inconvenient routing proposed.

Overall great! They could add more entertainment option. They kept running out of vegetarian food options and I got travel packs. This happened on all legs of the flight. Need to plan for it better - I am sure you have some data analytics from all your travels.

Better service to offer drinks in the middle of the trip

They can improve Everything, a 12 hour flight has just 2 meals and the meals are 7 hours apart, wtf are they thinking. At the very least they should have 2 refreshments like some small snacks with some water or some other refreshments since there are people travelling with medical conditions. The services and seats were genuinely horrible

As I remember my last BA flight - mediocre at best. Uncomfortable with poor and minimal food and drinks. Screen broke shortly into flight so didn’t have access to entertainment either.

I have nothing but amazing things to say about every staff member I encounter on my transport from Brussels (Bru) to New York (jfk) via London (lhr) after many flight delays and changes every colleague I asked for help gave me the utmost respect and did everything in their power to make sure I arrived in Washington DC to make it in time for my brothers wedding. The flight attendants on the flight from Bru to lhr move me to the front of the plane so I could get off quickly and try to make it to my connection to dc, when I missed that wagans at the support desk did everything in his power to get me to dc via two transfers. Especially during the busy holiday season I am so so grateful for the amazing customer service that I encountered today.

Firing with British airways leaves me feeling stressed and disappointed. They are substandard in so many aspects of airline travel.

Worst trans-Atlantic flight in years! The seats were incredibly tight, both in width and depth. The back selection was so cold, it was like traveling in a refrigerator. Although I had an entire row, the seat arms would not go up, so I could not take advantage of it to sleep. However, the crew was smiling and helpful and really seemed to enjoy their jobs. The food was the worst I have ever experienced on any flight. The PA system blasts announcements to the point of hurting my ears when using the audiovisual equipment. Not safe or sat. Also, I did not like the bait and switch tactic. I put in a search with one bag and the other flights had put that into their price, but BA did not and made me pay extra for it which would have made the price comparable to others. Also, even at check in there was no “choice” of seat, unless you paid extra for it even in the same row. No other airline I have been on does this. Once check in begins, normally, you can choose any unoccupied seat in your category. These tactics and the lack of comfort means I will never fly BA again.

An early flight and a bit confusing where to check in with British Airways; good we asked at the information counter the night before as we stayed overnight at the Sheraton on the departure level.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Winchester
Slough
Stansted
Croydon
Folkestone
Newport
Chichester
Colchester
Maidstone
Crawley
Chelmsford
Bedford
Hastings
Richmond

Everything you need to know for your flight to London

Cabin class types available on flights to London

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.