Ostuni 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 Ostuni and arrive at Trieste Centrale every 60 minutes on average. If travelling with Trenitalia, you need to know the Ostuni to Trieste train schedule: the first train leaves at 04:22, while the last ride is at 23:01. A Ostuni to Trieste train cost about 79.4 €. But how long is the train ride from Ostuni to Trieste? Your journey takes about 12 hours on average.