Bilbao Airport (IATA: BIO, ICAO: LEBB) is a public airport located 9 km (5.6 mi) north of Bilbao, in the municipality of Loiu, in Biscay. It is the most important airport in the Basque Country and northern Spain, with 4,045,613 passengers in 2011. It is famous for its new main terminal opened in 2000 designed by Santiago Calatrava.