Cheap flights from London Heathrow Airport to Barcelona from $79

If you are unable to visit Barcelona during the month of December, then departing from London Heathrow Airport during the month January is also very affordable. Most momondo users find prices during this month for around $233.

The cheapest day to depart on your flight to Barcelona is on a Tuesday when prices can be found for as low as $137. This is often the case because there is less demand to fly during this day of the week. Flights from London Heathrow Airport to Barcelona on a Friday will generally be more expensive and average around $377. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the afternoon is the cheapest time of day to fly from London Heathrow Airport to Barcelona when you can find flight prices for as low as $174. Flying to Barcelona in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $308. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $273 when searching weeks before you fly. 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 $236 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 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. Sunday 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.

The number of flights available between London Heathrow Airport and Barcelona is 16 per day as of June 2026. The most frequent departure time is 09:00, with 50% of daily flights leaving at midday.

As of June 2026, 115 flights take off from London Heathrow Airport and land in Barcelona each week. The most common flight departure day for this route is Fri, with 34% of weekly flights taking off on this day.