You can get from Siena to Florence by train, bus or flight.
To get from Siena to Florence on Feb 03 we recommend taking a bus because it’s the best combination of price and speed.
Find all the dates and times for this journey by train, bus, and flight, .
The most effective way for travelers in Italy to make the journey from Siena to Florence is by train or ride share. Given that the distance between the two cities is only around 75 kilometers makes taking a plane neither time nor cost-effective. Both traveling by train and ride share take around the same amount of time to arrive in Florence.
Return trips from Florence to Siena are also available.
Regional trains from Siena to Florence offered by Trenitalia take approximately 1.5 hours. There are two direct departures an hour from around 5:45 a.m. until just before 9:30 p.m. There are also additional trains each hour which connect at Empoli and take slightly longer. Siena's train station is on Piazza del Sale a short bus ride from the city center. Florence' Santa Maria Novella Station is in the Old Town and linked to ATAF local buses and the city's one tram line. Taxis are available at both stations.
The distance from Siena to Florence is approximately 31 miles (50 km).
Here are some other resources that might have the information you need