Cheap flights from London Heathrow Airport to Madrid from £42

The month of January is, on average, the cheapest month to fly to Madrid from London Heathrow Airport, with most prices found around £95. The month of February is another great option to travel to Madrid, with average flight prices from London Heathrow Airport averaging around £121.

Our data shows that Thursday is the least expensive day to fly to Madrid. Tickets to fly out on this day can be as low as £291. The most expensive day to fly to Madrid is Monday, with ticket prices averaging around £451.

According to our data, the cheapest time of day to fly to Madrid is at midday. momondo users have found flights departing from London Heathrow Airport to Madrid at midday for as low as £148. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £789 on average. Flights to Madrid from London Heathrow Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from London Heathrow to Madrid Barajas for the best London Heathrow - Madrid Barajas flight prices

You are more likely to see cheaper flights to Madrid from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Madrid for around £160 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Madrid from London Heathrow Airport for as low as £125 on momondo.

There are 3 cabin classes available to choose from on London Heathrow Airport to Madrid 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 15% of flights between London and Madrid have experienced a delay on any given week. The average delay length over the past 12 months has been 110 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. Thursday 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 14% of their flights experiencing any sort of delay.

As of September 2026, 60 flights take off from London Heathrow Airport and land in Madrid each day. The most common flight departure time for this route is 17:00, with 36% of daily flights taking off at midday.

423 flights are operational weekly from London Heathrow Airport to Madrid as of September 2026. The most popular departure day for this route is Tue, with 17% of flights per week taking off on this day.