Cheap flights from Belgium to London from £48

The cheapest month to fly to London from Belgium is in March. Flight prices, which tend to average around £118, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Belgium averaging around £121.

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £132. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Belgium to London for around £325.

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £110. Flights in the morning are often more expensive, with an average ticket price of £169.

Fly from Brussels Bruxelles-National to London Heathrow for the best Belgium - London flight prices

You are more likely to see cheaper flights to London from Belgium when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £141 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Belgium for as low as £100 on momondo.

There are 3 cabin classes available to choose from on Belgium to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 17% of flights between Belgium and London have experienced a delay on any given week. The average delay length over the past 12 months has been 97 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

The number of flights available between Belgium and London is 10 per day as of September 2026. The most frequent departure time is 09:00, with 65% of daily flights leaving at midday.

The number of flights available between Belgium and London is 70 per week as of September 2026. The most frequent departure day is Sun, with 30% of weekly flights leaving on this day.