Alitalia announced a new bus service that will link Fiumicino (FCO) airport to Termini Station, the main station in Rome.  This is a nice service, being that the train service from FCO to Termini costs about € 14 each way. The train service leaves every half-hour starting at 06:38 through 23:38. If you are an Alitalia passenger, you may want to consider the service mentioned below:

NEW ALITALIA BUS SERVICE TO ROME CITY

Traveling between Fiumicino Airport and the center of Rome is easier than ever thanks to the Alitalia Bus. All Alitalia passengers traveling between Fiumicino Airport and Rome can now take advantage of the newly introduced Alitalia Bus and enjoy a comfortable, carefree ride. The Alitalia Bus is offered in partnership with Alitransport, and is available to all Alitalia passengers arriving or departing for a fee of only € 7 each way, which must be paid using a credit card.

Passengers arriving at Fiumicino Airport may meet the bus at the arrivals area of Terminal 1. The Alitalia Bus provides nonstop transportation to Termini Station and to select locations in Rome City. Passengers may also take advantage of the shuttle service when traveling back to the airport by reserving in advance and selecting a pick up location. The bus service is always available based on passengers’ requests at time of booking.

Passengers may reserve the service on alitalia.com. Alternately the service may be purchased at the arrival area of T1 at Fiumicino Airport or the dedicated Alitalia Bus area at Termini Station located on Via Giolitti.