Portogruaro to Comiso 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 Portogruaro-Caorle and arrive at Comiso every about 6 hours on average. If travelling with Trenitalia, you need to know the Portogruaro to Comiso train schedule: the first train leaves at 16:24, while the last ride is at 16:24. A Portogruaro to Comiso train cost about 238.3 €. But how long is the train ride from Portogruaro to Comiso? Your journey takes about 20 hours on average.