Cheap flights from London to Barcelona from $35

The cheapest month to fly to Barcelona-El Prat Airport from London is in November. Flight prices, which tend to average around $98, 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 during January instead. Flights to Barcelona-El Prat Airport in January, while not as cheap as those in November, still average around $103.

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 $118. 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 Saturday because tickets tend to average around $175. 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 in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $132 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $166 on average. Flights to Barcelona-El Prat Airport from London in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Barcelona-El Prat Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $190 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 for as low as $148 on momondo.

There are 3 cabin classes available to choose from on London 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.

easyJet, Ryanair, and British Airways are the most popular carriers operating from London to Barcelona-El Prat

Vueling, British Airways and Ryanair are the top three most popular airlines that fly to Barcelona-El Prat Airport from London according to our data. Vueling is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Barcelona-El Prat Airport. Keep in mind that there are 6 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 20% 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 121 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. 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 October 2026, there are 27 flights per day flying from London to Barcelona-El Prat Airport. The most common time of day flights depart is 9:00AM, with 41% of flights taking off at noon.

194 flights are operational weekly from London to Barcelona-El Prat Airport as of October 2026. The most popular departure day for this route is Thu, with 38% of flights per week taking off on this day.