Avio Valtellina is based at the aviosuperficie in Caiolo (Sondrio), in Valtellina, Lombardy, Italy. The address listed on the site is Via Palù, 23010 Caiolo (SO), and the airfield is in the Alps near the Swiss border. It operates from an airfield with a 1,050 meter paved runway. ([aviovaltellina.it](https://www.aviovaltellina.it/))