Cheap flights from London to Belgium from £48

The month of March is, on average, the cheapest month to fly to Belgium from London, with most prices found around £110. If you aren’t able to travel during the month of March, then book flights to Belgium from London during November instead. Flights to Belgium in November, while not as cheap as those in March, still average around £111.

The cheapest day to depart from London to Belgium is on a Friday when prices can be found for as low as £430. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Belgium on Tuesday is £470.

Our most recent data shows that the best time of day to fly to Belgium is at midday. Flights from London to Belgium during this time can be as low as £119. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £466 on average. Flights to Belgium from London in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Belgium from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around £122 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belgium from London for as low as £100 on momondo.

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

Ryanair, British Airways, and Brussels Airlines are the most popular carriers operating from London to Belgium

Brussels Airlines, British Airways and KLM are the top three most popular airlines that fly to Belgium from London according to our data. Brussels Airlines is the first choice among our users, with 53% of people opting to fly with this airline when travelling to Belgium. Keep in mind that there are 3 different airlines that fly to Belgium on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between London and Belgium have experienced a delay on any given week. The average delay length over the past 12 months has been 96 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon 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. Friday 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.

As of February 2026, there are 13 flights per day flying from London to Belgium. The most common time of day flights depart is 11:00, with 88% of flights taking off at midday.

93 flights are operational weekly from London to Belgium as of February 2026. The most popular departure day for this route is Tue, with 32% of flights per week taking off on this day.