The average bus between Udine and Siena takes 9h 23m and the fastest bus takes 6h 45m. The bus service runs several times per day from Udine 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 3 times a day between Udine and Siena. The earliest departure is at 7:35 AM in the morning, and the last departure from Udine is at 2:55 PM which arrives into Siena at 5:30 AM. All services require a transfer, and take on average 9h 23m. The schedules shown below are for the next available departures.

6h 45m • 1 change
9h 5m • 1 changeArrives next day

14h 35m • 1 change
6h 45m • 1 change
9h 5m • 1 changeArrives next day

14h 35m • 1 changeWant to know about travelling from Udine 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 Udine to Siena. However, there are services departing from Udine station and arriving at Siena station via Florence Villa Constanza Bus Station station. The journey, including transfers, takes approximately 9h 23m.
Udine to Siena bus services, operated by FlixBus, depart from Udine station.
Udine to Siena bus services, operated by FlixBus, arrive at Siena station.
Book your Udine to Siena bus tickets online with FlixBus.
The distance between Udine and Siena is 341 km. The road distance is 436 km.
You can take a bus from Udine to Siena via Florence Villa Constanza Bus Station in around 7h 20m.