Cheap flights from London Heathrow Airport to Belgium from £49

The month of April is, on average, the cheapest month to fly to Belgium from London Heathrow Airport, with most prices found around £60. If you aren’t able to travel during the month of April, then book flights to Belgium from London Heathrow Airport during December instead. Flights to Belgium in December, while not as cheap as those in April, still average around £68.

The cheapest day to depart from London Heathrow Airport to Belgium is on a Friday when prices can be found for as low as £422. 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 £474.

Our most recent data shows that the best time of day to fly to Belgium is in the evening. Flights from London Heathrow Airport to Belgium during this time can be as low as £115. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £474 on average. Flights to Belgium from London Heathrow Airport 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 Heathrow - Belgium flight prices

You are more likely to see cheaper flights to Belgium from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around £124 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 Heathrow Airport for as low as £102 on momondo.

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

Brussels Airlines, British Airways and KLM are the top three most popular airlines that fly to Belgium from London Heathrow Airport according to our data. Brussels Airlines is the first choice among our users, with 54% 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 94 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. 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 15% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Belgium is 13 per day as of May 2026. The most frequent departure time is 11:00, with 62% of daily flights leaving at midday.

As of May 2026, 94 flights take off from London Heathrow Airport and land in Belgium each week. The most common flight departure day for this route is Mon, with 26% of weekly flights taking off on this day.