Fiumicino, also known as Leonardo da Vinci Airport (the airport’s code is FCO), is Rome’s major international airport. Direct flights from the United States use this airport. There are express train connections between FCO and Roma Termini (Rome’s main train and bus station) every 30 minutes.
Ciampino (the airport’s code is CIA) is Rome’s smaller airport. It is served by many European budget carriers. There is no rail service between Ciampino and Roma Termini.