Cheap flights from London Heathrow Airport to Barcelona from $42

The cheapest month to fly to Barcelona-El Prat Airport from London Heathrow Airport is in November. Flight prices, which tend to average around $125, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Barcelona-El Prat Airport from London Heathrow Airport during January instead. Flights to Barcelona-El Prat Airport in January, while not as cheap as those in November, still average around $131.

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Monday when prices can be found for as low as $142. 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 Friday because tickets tend to average around $190. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

Flying to Barcelona-El Prat Airport from London Heathrow Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $153 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $189 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 travelers’ 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 $192 when searching weeks out. 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 $174 on momondo.

Vueling is the most popular carrier operating from London Heathrow to Barcelona-El Prat

British Airways, Vueling and Iberia are the top three most popular airlines that fly to Barcelona-El Prat Airport from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Barcelona-El Prat Airport. Keep in mind that there are 3 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 19% 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 in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 18% of their flights experiencing any sort of delay.

13 flights are operational daily from London Heathrow Airport to Barcelona-El Prat Airport as of May 2026. The most popular departure time for this route is 9:00AM, with 55% of flights per day taking off at noon.

As of May 2026, there are 93 flights per week flying from London Heathrow Airport to Barcelona-El Prat Airport. The most common day of the week flights depart is Tue, with 42% of flights taking off on this day.