Car-Rent.com compares the prices of well-known car rental companies in Spain, including the following location: Barcelona Airport
Barcelona Airport is officially called, Aeroport Internacional de Barcelona - El Prat de Llobregat, however, the locals often refer to it as, El Prat. It is the second largest airport in Spain after (Madrid Airport) and the most important in Catalonia.
The airport of Barcelona is designated by the aviation industry with the IATA code BCN and the ICAO code is LEBL. With regards to the Wikipedia article over Barcelona Airport, the airport has three take-off and landing runways.
At the time of writing this, there are five car rental companies who have offices situated at Barcelona Airport: Avis, Europcar, Hertz, National and Sol-Mar.
The airport's official website can be found via the following address link: Barcelona Airport