The average bus between Siena and Castelnuovo di Porto takes 6h 12m and the fastest bus takes 5h 4m. The bus service runs several times per day from Siena to Castelnuovo di Porto. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 4 hours between Siena and Castelnuovo di Porto. The earliest departure is at 5:35 AM in the morning, and the last departure from Siena is at 10:25 PM which arrives into Castelnuovo di Porto at 7:14 AM. All services require a transfer at Roma, Autostazione Tiburtina and take an average of 6h 12m. The schedules shown below are for the next available departures.



5h 37m • 3 changes



5h 37m • 3 changes



6h 12m • 3 changes



5h 17m • 3 changes



5h 37m • 3 changes



5h 37m • 3 changes



6h 12m • 3 changes



5h 17m • 3 changes



5h 37m • 3 changes



5h 37m • 3 changes



6h 12m • 3 changes



5h 17m • 3 changes



5h 37m • 3 changes



5h 37m • 3 changes



6h 12m • 3 changes



5h 17m • 3 changes



5h 32m • 3 changes



6h 12m • 3 changes
Arrives next day



8h 49m • 3 changes



5h 37m • 3 changes



5h 4m • 3 changes



6h 12m • 3 changes



5h 17m • 3 changes
Want to know about travelling from Siena to Castelnuovo di Porto? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Siena to Castelnuovo di Porto. However, there are services departing from Siena station and arriving at Castelnuovo di Porto station via Roma, Autostazione Tiburtina. The journey, including transfers, takes approximately 6h 12m.
Siena to Castelnuovo di Porto bus services, operated by FlixBus, depart from Siena station.
Siena to Castelnuovo di Porto bus services, operated by FlixBus, arrive at Roma, Autostazione Tiburtina station.
The distance between Siena and Castelnuovo di Porto is 163.5 km. The road distance is 274 km.
FlixBus operates a bus from Siena to Roma, Autostazione Tiburtina every 3 hours. Tickets cost €20–35 and the journey takes 2h 50m. AutoLinee Moretti also services this route 3 times a week.