Train to Rome Fiumicino Airport
Quick answer: The Leonardo Express runs nonstop between the airport and Roma Termini in about 32 minutes, every 15 minutes, for a €14 one-way fare. The cheaper FL1 regional line takes longer (about 48 minutes to Tiburtina) but stops at more useful interchanges, including Trastevere and Ostiense.
Leonardo Express
Nonstop to Roma Termini, no other stops, running roughly every 15 minutes from about 05:00 to 23:30 in both directions. It's the fastest way into central Rome and the option most visitors use, but it only serves Termini — if your hotel is near another station, the FL1 may save you a transfer.
FL1 Regional
Calls at Fiera di Roma, Ponte Galeria, Muratella, Magliana, Trastevere, Ostiense (interchange with Metro line B), Tuscolana, and Tiburtina, continuing onward toward Orte and Fara Sabina. Useful if you're headed to Trastevere or Ostiense directly, or connecting to regional trains further north. Tickets are cheaper than the Leonardo Express, though the exact single fare depends on Trenitalia's fare engine at the time of booking.
Tickets
Buy tickets at station machines, the Trenitalia app, or ticket counters before boarding — validate paper tickets at the yellow machines on the platform if required. The station, Fiumicino Aeroporto, sits beneath the terminals with a short walk from arrivals.