From the Airport: Taxi. Price: approximately 15 Euros . Metro: take line 8 to Mar de Cristal. Change trains and take line 4 to Bilbao. Change trains, take line 1 to Sol Station. Bus station:Plaza Benavente Stop. With Lines 6, 26, 32. Puerta del Sol Stop. With Lines 5, 150, 51, 52, 53, 20, 15 Price: 1 Euro