Cheap flights from London Heathrow Airport to Spain from £26

The cheapest month to fly to Spain from London Heathrow Airport is in January. Flight prices, which tend to average around £108, are often lower during this time because this is during the off-season. If you aren’t able to travel to Spain during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of £128.

The cheapest day to depart on your flight to Spain is on a Monday when prices can be found for as low as £150. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Spain is Sunday, with ticket prices averaging around £171.

In the evening is the cheapest time of day to fly from London Heathrow Airport to Spain when you can find flight prices for as low as £144. Flying to Spain in the evening is an ideal time because this is during off-peak travel hours. Flights at midday are often more expensive, with an average ticket price of £194.

Fly from London Heathrow to Bilbao for the best London Heathrow - Spain flight prices

You are more likely to see cheaper flights to Spain from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Spain for around £142 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Spain from London Heathrow Airport for as low as £111 on momondo.

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

Vueling, British Airways, and KLM are the most popular carriers operating from London Heathrow to Spain

British Airways, Vueling and Iberia are the top three most popular airlines that fly to Spain from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 45% of people opting to fly with this airline when travelling to Spain. Keep in mind that there are 14 different airlines that fly to Spain on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between London and Spain have experienced a delay on any given week. The average delay length over the past 12 months has been 112 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, Iberia have had the fewest delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

As of October 2026, 68 flights take off from London Heathrow Airport and land in Spain each day. The most common flight departure time for this route is 15:00, with 44% of daily flights taking off at midday.

As of October 2026, 480 flights take off from London Heathrow Airport and land in Spain each week. The most common flight departure day for this route is Mon, with 28% of weekly flights taking off on this day.