When making the transfer from Florence airport to Siena, you have three different options; taxi, bus or train. The most convenient and only direct option is to take a Florence airport taxi, which takes around 1 hour and costs approximately €190. Unfortunately, there's no direct public transport option, you will need to either take the Busitalia SITA Nord shuttle bus or a taxi to the Santa Maria Novella train station and from there take either a bus or train to Siena. From Florence SMN train station the Tiemme Rapida bus takes 1 hour 20 minutes to reach Siena and the train takes 1 hour and 35 minutes. Welcome Pickups offers meet and greet services and a friendly introduction to Florence at the same price as a regular taxi. Click here to see the cost.