Cheap flights from London Heathrow Airport to Barcelona from $43

The month of November is, on average, the cheapest month to fly to Barcelona from London Heathrow Airport, with most prices found around $129. If you don’t want to visit Barcelona in November, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $131.

The cheapest day to depart from London Heathrow Airport to Barcelona is on a Monday when prices can be found for as low as $133. On the other hand, Friday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $181.

At noon is the cheapest time of day to fly from London Heathrow Airport to Barcelona when you can find flight prices for as low as $136. Flying to Barcelona at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $182 on average. Flights to Barcelona 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 flight prices

You are more likely to see cheaper flights to Barcelona from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona for around $189 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona from London Heathrow Airport for as low as $146 on momondo.

There are 3 cabin classes available to choose from on London Heathrow Airport to Barcelona 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 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. Thursday 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.

As of August 2026, 11 flights take off from London Heathrow Airport and land in Barcelona each day. The most common flight departure time for this route is 9:00AM, with 46% of daily flights taking off at noon.

81 flights are operational weekly from London Heathrow Airport to Barcelona as of August 2026. The most popular departure day for this route is Thu, with 43% of flights per week taking off on this day.