The average bus between Rome Ciampino Airport (CIA) and Siena takes 4h 44m and the fastest bus takes 4h. The bus service runs several times per day from Rome Ciampino Airport (CIA) to Siena. 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 5 times a day between Rome Ciampino Airport (CIA) and Siena. The earliest departure is at 5:15 AM in the morning, and the last departure from Rome Ciampino Airport (CIA) is at 6:55 PM which arrives into Siena at 12:40 AM. All services require a transfer, and take on average 4h 44m. The schedules shown below are for the next available departures.

4h 15m • 1 change

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4h 25m • 1 change

4h • 1 change

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Want to know about travelling from Rome Ciampino Airport (CIA) to Siena? 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 Rome Ciampino Airport (CIA) to Siena. However, there are services departing from Rome Ciampino Airport (CIA) station and arriving at Siena station via Siena. The journey, including transfers, takes approximately 4h 44m.
Rome Ciampino Airport (CIA) to Siena bus services, operated by FlixBus, depart from Roma, Autostazione Tiburtina station.
Rome Ciampino Airport (CIA) to Siena bus services, operated by FlixBus, arrive at Siena station.
Book your Rome Ciampino Airport (CIA) to Siena bus tickets online with FlixBus.
The distance between Rome Ciampino Airport (CIA) and Siena is 198 km. The road distance is 247 km.
FlixBus operates a bus from Roma, Autostazione Tiburtina to Siena every 3 hours. Tickets cost €18–35 and the journey takes 2h 39m. AutoLinee Moretti also services this route 3 times a week.