Cheap flights from London Heathrow Airport to Madrid from $103

The month of January is, on average, the cheapest month to fly to Madrid from London Heathrow Airport, with most prices found around $179. If you aren’t able to travel during the month of January, then book flights to Madrid from London Heathrow Airport during November instead. Flights to Madrid in November, while not as cheap as those in January, still average around $237.

The cheapest day to depart on your flight to Madrid is on a Thursday when prices can be found for as low as $347. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $518. These prices are subject to change though, so be sure to set up a Price Alert for flights to Madrid.

Flying to Madrid from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $418 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Madrid is at midday when prices are around $886.

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 $341 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 $216 on momondo.

There are 2 cabin classes available to choose from on London Heathrow to Madrid Barajas 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 104 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, Wamos Air have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

As of February 2026, 64 flights take off from London Heathrow Airport and land in Madrid each day. The most common flight departure time for this route is 19:00, with 43% of daily flights taking off at midday.

The number of flights available between London Heathrow Airport and Madrid is 454 per week as of February 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.