Cheap flights from Barcelona to London from $37

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Barcelona, with most prices found around $54. If you’re not able to fly to London Heathrow Airport in February, then December is your next best option. Flight prices from Barcelona to London Heathrow Airport during December average around $61.

Our data shows that Friday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $270. The most expensive day to fly to London Heathrow Airport is Tuesday, with ticket prices averaging around $631.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Barcelona to London Heathrow Airport in the evening for as low as $216. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $541.

Fly from Barcelona-El Prat to London Heathrow for the best Barcelona - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from Barcelona when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $172 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Barcelona for as low as $155 on momondo.

Historically, on average around 15% of flights between Barcelona and London have experienced a delay on any given week. The average delay length over the past 12 months has been 115 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening 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, Vueling have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

As of May 2026, 11 flights take off from Barcelona and land in London Heathrow Airport each day. The most common flight departure time for this route is 7:00AM, with 47% of daily flights taking off at noon.

82 flights are operational weekly from Barcelona to London Heathrow Airport as of May 2026. The most popular departure day for this route is Sat, with 50% of flights per week taking off on this day.