Book cheap flights from London to Barcelona from £15

Amid the bright lights of vibrant London, there are eye-popping landmarks, grand museums and cutting-edge exhibitions, alongside great eateries and a night scene that packs a punch. It's no wonder that each year millions of visitors pass through its six main airports, making them collectively the busiest airport network across the globe.

Flights leave from Heathrow, London City, Gatwick, Luton and Stansted to Barcelona. Lower cost airlines usually operate from Stansted, Luton and Gatwick. All airports can be easily accessed by public transport from the city centre. Heathrow is the largest airport with 5 terminals (1 is the oldest), while London City only has one runway and is more frequently used by business travellers.

Flights from London to Barcelona usually start from Stansted (north east), Luton (north west), Gatwick (south), Heathrow (west) or London City (central). Heathrow Airport is accessed via the Heathrow Express from Paddington (15-20 minutes) or the underground Piccadilly line. To reach Gatwick Airport, the most practical way is on the fast Gatwick Express service from London Victoria Station, or the Thameslink train services from London Victoria and London Bridge. Luton offers a combined train (around 35 minutes) and shuttle bus (10 minutes) service from St Pancras to Luton Parkway Station, while Stansted Airport is reached by train from Liverpool Street (about 40 minutes). London City is on the DLR line in the centre.

Barcelona is a magical city, packed with ancient monuments, bustling tapas bars and incredible architecture. Explore Gaudi's masterpieces, such as the soaring Sagrada Familia and Park Güell before taking a leisurely stroll through the Ciutat Vella (Old City), where a network of ancient streets host impressive gothic buildings at every turn. Barcelona is as famous for its food as its history, with a never-ending choice of tapas bars, seafood restaurants and Michelin-starred eateries. In the early evening, the beach front is the perfect place to head to for a cocktail or sunset cruise. For the best views of the city, head up Mont Juic where lush gardens and hidden walkways are backed by spellbinding vistas.

London to Barcelona flights may arrive at Barcelona El Prat Airport at either Terminal 1 or Terminal 2. The Aerobus bus services 1 and 2 run from terminals 1 and 2 respectively to the city centre. There is also the local 46 bus service via both terminals, the N17 night bus that runs from Terminal 1 and N16 from Terminal 2. There is a shuttle service between the terminals and a local Renfe train connecting Terminal 2 to Barcelona city centre. Some low cost airlines also operate flights from London to Girona and Reus Airports, from where a Barcelona Bus service runs regularly to the city centre (Girona approximately 75 minutes, Reus 90 minutes).