Casal di Principe to Siderno 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 Albanova, Napoli Centrale and arrive at Siderno, Villa S. Giovanni every about 1 hour on average. If travelling with Trenitalia, you need to know the Casal di Principe to Siderno train schedule: the first train leaves at 06:52, while the last ride is at 23:53. A Casal di Principe to Siderno train cost about 67.93 €. But how long is the train ride from Casal di Principe to Siderno? Your journey takes about 7 hours on average. Trenitalia offers 2 direct trains between these two cities. If you need to travel this week, prices start from 29.93€ to a maximum price of 75.70€.