Cheap flights from Belgium to London from £36

The cheapest month to fly to London from Belgium is in November. Flight prices, which tend to average around £71, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Belgium averaging around £80.

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £131. 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 £387.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £139. Flights in the morning are often more expensive, with an average ticket price of £189.

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 £133 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 £99 on momondo.

Historically, on average around 16% 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 98 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. Monday 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 15% of their flights experiencing any sort of delay.

The number of flights available between Belgium and London is 9 per day as of May 2026. The most frequent departure time is 09:00, with 54% of daily flights leaving at midday.

The number of flights available between Belgium and London is 69 per week as of May 2026. The most frequent departure day is Sun, with 26% of weekly flights leaving on this day.