Taxi: There are always plenty of taxis waiting at the airport, and a journey into the city centre will generally cost between €25-€30 depending on traffic and where exactly you are going.. Taxis can take 4 passengers (including children), although there are an increasing number of ŽminivanŽ style taxis which can take more. There is a surcharge for airport journeys and another for luggage.
Aerobús: A very straightforward and inexpensive way to get to and from the city centre is by the airport bus, the distinctive blue Aerobús. This leaves from directly outside the airport terminals (stopping at A, B and C) with principal stops en route being at Plaça Catalunya, Plaça Universitat and Plaça Espanya.
In Plaça Catalunya the bus stops in front of El Corte Inglés. It runs from 5.30am-00.15am (Plaça Cataluyna to airport) and 6am-1.00am (airport to Plaça Catalunya) Mon-Sat and public holidays. It should leave every 7-10 minutes – however it is worth noting that in the busy summer months queues to get on the bus can be lengthy and you may not get on first time, so it is not a good option if you are in a hurry.
Train: Another cheap way to get into the centre of town, RENFE trains leave to and from the airport every 30mins. The airport station is connected to the terminals by an overhead walkway and the journey into the centre takes approx 20-25mins.
There are various stops en route including Sants, Plaça Catalunya and Arc de Triomf. Metro passes are also valid for this journey (ie. if you have bought a three day pass you can use this on the train to get to the airport as you leave on the third day.) Trains run from 5.25am-10pm (Plaça Catalunya-airport) and 6.13am-11.40pm (airport-centre).