Trieste to Niscemi 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 Trieste Centrale and arrive at Niscemi every about 3 hours on average. If travelling with Trenitalia, you need to know the Trieste to Niscemi train schedule: the first train leaves at 16:15, while the last ride is at 20:40. A Trieste to Niscemi train cost about 191.65 €. But how long is the train ride from Trieste to Niscemi? Your journey takes about 8 hours on average.