Cagliari to Sassari trains might be a good value for money solution: travelling in Italy by train is often rather cheap and faster than taking a bus indeed Trains leave from Cagliari and arrive at Sassari every about 2 hours on average. If travelling with Trenitalia, you need to know the Cagliari to Sassari train schedule: the first train leaves at 06:22, while the last ride is at 18:22. A Cagliari to Sassari train cost about 15.75 €. But how long is the train ride from Cagliari to Sassari? Your journey takes about 3 hours on average. Trenitalia offers 1 direct trains between these two cities. Thanks to Trenitalia, offers, you can save on your trip from Cagliari to Sassari and find low cost tickets starting from 16 €!