Coming from Fiumicino Airport

From Fiumicino airport in Rome there are non-stop sub-way trains which run every hour from 7.38 until 22.08 which can be used to get to Termini railway station. Tickets cost about Euro 8,00 and can be bought from automatic selling machines in either the national or international arrival halls or at railway stations. Tickets are not sold on buses or trains. They may be purchased only at tobacconists, news agents and at the green kiosks located at main bus stops. Underground tickets can also be purchased at the stations. Notice that tickets must always be obliterated when you get in the bus or at the underground station.

SPECIAL TRAIN LEONARDO EXPRESS
Ticket price Euro 8.80

Termini Station-Airport
The “Leonardo Express” train leaves from Roma Termini station every 30 minutes, each day, from 05.52 to 22.52. The train makes no mid-journey stops.

Airport-Termini station
The “Leonardo Express” train leaves from Fiumicino Airport station every 30 minutes, each day, from 06.37 to 23.37. The train makes no mid-journey stops.

Airport-Termini station
The “Leonardo Express” train leaves from Fiumicino Airport station every 30 minutes, each day, from 06.37 to 23.37. The train makes no mid-journey stops.

Follow this link and fill in the information requested to search for Ferrovie dello Stato (National railways)
Intercity Ferrovie dello Stato (FS) trains (PHONE: 147/888088 toll-free) run every hour between Rome's Stazione Termini and Naples' Stazione Centrale. Intercity trains make the trip in less than two hours. Trains take either the inland route (through Cassino) or go along the coast (via Formia). Rome/Naples - Naples/Rome train arrival and departure times.