Cheap flights from London Heathrow Airport to Barcelona from $71

In general, November is the cheapest month to fly from London Heathrow Airport to Barcelona-El Prat Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $184. 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 $188.

Our data shows that Tuesday is the least expensive day to fly to Barcelona-El Prat Airport. Tickets to fly out on this day can be as low as $137. The most expensive day to fly to Barcelona-El Prat Airport is Monday, with ticket prices averaging around $322.

Our most recent data shows that the best time of day to fly to Barcelona-El Prat Airport is in the afternoon. Flights from London Heathrow Airport to Barcelona-El Prat Airport during this time can be as low as $175. If you have a flexible travel schedule, then try to avoid flying at midday when prices are $284 on average. Flights to Barcelona-El Prat Airport from London Heathrow Airport at midday 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 $272 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 $224 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.

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 116 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. Friday 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 17% of their flights experiencing any sort of delay.

16 flights are operational daily from London Heathrow Airport to Barcelona-El Prat Airport as of June 2026. The most popular departure time for this route is 09:00, with 44% of flights per day taking off at midday.

As of June 2026, there are 118 flights per week flying from London Heathrow Airport to Barcelona-El Prat Airport. The most common day of the week flights depart is Sun, with 33% of flights taking off on this day.