Cheap flights from London Heathrow Airport to Barcelona from £26

The cheapest month to fly to Barcelona-El Prat Airport from London Heathrow Airport is in January. Flight prices, which tend to average around £103, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Barcelona-El Prat Airport from London Heathrow Airport during November instead. Flights to Barcelona-El Prat Airport in November, while not as cheap as those in January, still average around £120.

According to our data, Monday is the cheapest day to fly to Barcelona-El Prat Airport from London Heathrow Airport. The lowest ticket price found for a Monday departure recently was £104. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Barcelona-El Prat Airport is Friday, with ticket prices averaging around £130.

Flying to Barcelona-El Prat Airport from London Heathrow Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as £113 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £122 on average. Flights to Barcelona-El Prat Airport 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 Barcelona-El Prat for the best London Heathrow - Barcelona-El Prat flight prices

You are more likely to see cheaper flights to Barcelona-El Prat Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around £141 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from London Heathrow Airport for as low as £113 on momondo.

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

Vueling and British Airways are the most popular carriers operating from London Heathrow to Barcelona-El Prat

Vueling, British Airways and Iberia are the top three most popular airlines that fly to Barcelona-El Prat Airport from London Heathrow Airport according to our data. Vueling is the first choice among our users, with 59% of people opting to fly with this airline when travelling to Barcelona-El Prat Airport. Keep in mind that there are 8 different airlines that fly to Barcelona-El Prat Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 18% of flights between London and Barcelona have experienced a delay on any given week. The average delay length over the past 12 months has been 114 minutes.

Generally, flights departing in the morning 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 18% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Barcelona-El Prat Airport is 22 per day as of November 2026. The most frequent departure time is 19:00, with 54% of daily flights leaving at midday.

As of November 2026, 156 flights take off from London Heathrow Airport and land in Barcelona-El Prat Airport each week. The most common flight departure day for this route is Fri, with 27% of weekly flights taking off on this day.