Casal di Principe to Udine 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 Udine every about 2 hours on average. If travelling with Trenitalia, you need to know the Casal di Principe to Udine train schedule: the first train leaves at 06:52, while the last ride is at 19:15. A Casal di Principe to Udine train cost about 91.60 €. But how long is the train ride from Casal di Principe to Udine? Your journey takes about 10 hours on average.