Ischia Porto to Trieste 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 Pozzuoli Solfatara, Napoli Centrale and arrive at Trieste Centrale, Udine every about 1 hour on average. If travelling with Trenitalia, you need to know the Ischia Porto to Trieste train schedule: the first train leaves at 05:23, while the last ride is at 17:10. A Ischia Porto to Trieste train cost about 94.25 €. But how long is the train ride from Ischia Porto to Trieste? Your journey takes about 9 hours on average.