To come to Torino by plane you have two main possibilities. You can either land in Torino Caselle Airport (website) or in Milano Malpensa Airport (website).

Torino Caselle Airport is closer to the city centre (1 hour approx. by bus), Milano Malpensa Airport is farther (2 hours approx. by bus).

From both airports there is a bus going directly to Torino (SADEM is the name of the bus company).

The SADEM bus from Torino Caselle airport to Torino city will bring you close to either Porta Susa train station (bus stop: Torino corso Bolzano) or to Porta Nuova train station (Bus stop: Torino piazza Carlo Felice). See here for information and timetable. It is advisable to buy the ticket in the airport before getting on the bus.

The SADEM bus from Milano Malpensa airport to Torino city will bring you close to Porta Susa train station (bus stop: Torino, autostazione corso Bolzano). See here for information and timetable. Online reservation is required.

Alternatively one can take a taxi from Torino Caselle Airport. It should take half an hour and it should cost approximately 35/40 euros.