By plane: The nearest airport is Turin Caselle, from there you can take a direct bus to the city centre (which takes about 45min). More (international/economic) flights arrive at the airports of Milan: Malpensa, Linate and Orio al Serio (ordered by distance from Turin). From Malpensa and Orio al Serio, there is a direct bus service. From Linate you can take a bus that takes you to the central station of Milan, and from there take a train or bus to Turin.