How much does a ticket from the airport train from FCO which goes to TIBURTINA cost & how often do they run? Is this the best way to get to Florence from the airport? I don't want to buy the tickets ahead of time in case our flights is late & I don't know how long it takes to get through customs either. There are 3 adults traveling in early September. The flight should be in around 7:30 am. We are traveling light & on a budget. This is our first trip to Europe. Any advice would be greatly appriciated.