Barcelona airport WiFi
Currently there is a local WiFi provider at Barcelona airport, but it its services are limited to the airport inner area. If you need 24/7 mobile Wireless during your stay at Barcelona the most recommended solution by thousands of tourists is getting hold of a Freeclick device, that will service mobile WiFi up to 7 users.
If you only need connection for the airport you can contact kubi Wirelss. The price of the service is 4,90€ for up to 24h service, but limited to the airport halls. For 6,90€ you can have Freeclick service int he airport and anywhere else in Spain.