Ercolano to Acerra 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 Portici-Ercolano and arrive at Acerra every 30 minutes on average. If travelling with Trenitalia, you need to know the Ercolano to Acerra train schedule: the first train leaves at 20:53, while the last ride is at 20:53. A Ercolano to Acerra train cost about 2.0 €. But how long is the train ride from Ercolano to Acerra? Your journey takes about 1 hour on average.