£43 Find Cheap Flights from Belgium to London

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 15/1. 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 London

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£102
Overall average: £107
Brussels Airlines
Mon 5/1Fri 9/1
BRU - LHR • Direct
Cheapest one-way flight
£43
Multiple Airlines
Thu 15/1
CRL - LGW • 1 stop
Our travellers' advice
AI-powered summary based on content written by KAYAK users. AI can make mistakes.
Allow extra time for baggage at Heathrow.
Heathrow's size means longer passport control times.
User tips
User tips
User tips
User tips
Top airlines
British Airways
Most flights • 32 per week
Brussels Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
CRL-LON
Cheapest
BRU-LON
Most popular
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 13% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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 London!
Flight Deals
Booking Insights
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

Mon, 5 Jan - Fri, 9 Jan
Brussels Airlines Logo
16:55 - 17:05
BRU
-
LHR
1h 10mdirect
Brussels Airlines Logo
17:50 - 20:00
LHR
-
BRU
1h 10mdirect
£102Brussels Airlines
Mon, 5 Jan - Fri, 9 Jan
Ryanair Logo
12:55 - 22:25
CRL
-
LTN
10h 30m1 stop
Ryanair Logo
05:50 - 12:35
LTN
-
CRL
5h 45m1 stop
£102Ryanair
Mon, 5 Jan - Thu, 8 Jan
Brussels Airlines Logo
16:55 - 17:05
BRU
-
LHR
1h 10mdirect
Brussels Airlines Logo
06:50 - 08:55
LHR
-
BRU
1h 05mdirect
£102Brussels Airlines
Sat, 24 Jan - Sat, 31 Jan
British Airways Logo
09:55 - 10:15
BRU
-
LHR
1h 20mdirect
British Airways Logo
11:25 - 13:40
LHR
-
BRU
1h 15mdirect
£103British Airways
Thu, 29 Jan - Tue, 3 Feb
Multiple Airlines Logo
06:25 - 21:10
CRL
-
LGW
15h 45m1 stop
Multiple Airlines Logo
13:55 - 22:35
LGW
-
CRL
7h 40m1 stop
£103Multiple Airlines
Sun, 18 Jan - Sat, 24 Jan
Multiple Airlines Logo
18:00 - 21:55
CRL
-
STN
28h 55m2 stops
Multiple Airlines Logo
17:25 - 17:00
STN
-
CRL
22h 35m2 stops
£103Multiple Airlines
Wed, 25 Feb - Tue, 3 Mar
British Airways Logo
14:35 - 14:50
BRU
-
LHR
1h 15mdirect
British Airways Logo
18:45 - 21:00
LHR
-
BRU
1h 15mdirect
£104British Airways
Sat, 28 Mar - Sun, 29 Mar
Wizz Air Logo
08:55 - 18:15
CRL
-
LTN
10h 20m1 stop
Wizz Air Logo
08:20 - 19:40
LTN
-
CRL
10h 20m1 stop
£111Wizz Air
Thu, 22 Jan - Sun, 25 Jan
KLM Logo
14:45 - 16:35
BRU
-
LCY
2h 50m1 stop
KLM Logo
20:05 - 07:35
LCY
-
BRU
10h 30m1 stop
£181KLM
Tue, 27 Jan - Fri, 30 Jan
KLM Logo
06:15 - 09:30
BRU
-
LCY
4h 15m1 stop
KLM Logo
09:20 - 14:15
LCY
-
BRU
3h 55m1 stop
£183KLM
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 round-trip prices found by users searching on KAYAK in the last 72 hours.

If travelling to London, the cheapest city to fly from in the last 3 days was Brussels, with flights as low as £43 one-way and £102 return. Flights from Brussels are the most searched and start at $198 for a return trip.

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 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 January, where tickets cost £109 on average for one-way flights. On the other hand, the most expensive months are December and July, where the average cost of tickets from Belgium is £147 and £138 respectively. For return trips, the best month to travel is January with an average price of £109.

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 £97 one-way - £139 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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 85 days 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 Southend Airport, with an average flight price of £79.

Good to know - Cheap tickets from Belgium to London

Low seasonSeptember
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly (1% more expensive on average)

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?

    If travelling to London, the cheapest city to fly from in the last 3 days was Brussels, with flights as low as £43 one-way and £102 return. Flights from Brussels are the most searched and start at $198 for a return trip.

  • 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 £138. The cheapest price found on KAYAK in the last 2 weeks cost £52 and departed from Brussels Bruxelles-National Airport.

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Friday where tickets can be as cheap as £148. On the other hand, the most expensive day to fly is Saturday, where prices are £453 on average.

  • 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.

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

    The cheapest time of day to fly to London is generally at night, when flights cost £149 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 £260.

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 £97 or less one-way and £139 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 375 reviews
7.3Boarding
6.9Comfort
7.9Crew
6.2Food
6.1Entertainment
Airline reviews

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.

2.0 MediocreAnonymous, Sept 2025
LHR - BRU
Read more Brussels Airlines reviews

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

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Not only were the aircrafts spacious, but the crew was friendly and efficient. I was so gracious for the included meals on the longer flight (8+ hours).

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

The check-in baggage belt was broken (which is understandable) but what was surprising is they would check you in, give a baggage tag and then you have to drag the baggage to a different counter at the end of airport. No vegetarian option in in-flight meal. British Airways remains the worst big name airlines and always my last option while booking.

Decrepit planes, poor business class layout designed to maximize revenue, no decent movie selection.

Entertainment did not work from DC to London. Was not able to check in online during my return journey from Mumbai to London. Food was good!

The to flight was excellent but the return flight the seats seemed not cushioning enough.

⭐ 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, Sara 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.

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
Slough
Winchester
Croydon
Stansted
Folkestone
Chichester
Maidstone
Colchester
Chelmsford
Crawley
Richmond
Bedford
Watford
Hastings

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.