From the airport:

The international airport in Bilbao (BIO) is based in Loiu, beside the Technological Park of Vizcaya. Access to our facilities is most readily available by taxi. Ask the driver to take you to the Technological Park of Vizcaya and to stop at the CIC BioGUNE (Building 801). Go down the steps at the right of the building and follow the parking lot slope. You will find our facilities in Building 800, at the end of the slope (around 50 meters).

From Bilbao:

a) Take the bus A3250 from Bizcaibus, the public transportation company, at the stop in Plaza Moyua, just beside Delegación Especial de Economía y Hacienda de Vizcaya. Get off in Granja/Abeletxea stop and cross the road. Go down the steps at the right of the CIC bioGUNE (Building 801) and follow the parking lot slope. You will find our facilities in Building 800, at the end of the slope (around 50 meters).

b) Take a taxi and ask the driver to take you to the Technological Park of Vizcay and to stop at the CIC bioGUNE (Building 801). Go down the steps at the right of the building and follow the parking lot slope. You will find our facilities in Building 800, at the end of the slope (around 50 meters).