For arrivals and departures between 11.30pm and 5am, a night bus connects Fiumicino with Tiburtina station, stopping also at Termini Station.
From Fiumicino: 1.15am - 2.15am - 3.30am - 5.00am
From Tiburtina: 0.30am - 1.15am - 2.30am - 3.45am
The 40N bus connects Tiburtina and Termini during the night.

Ciampino Airport "G.B. Pastine" (CIA)
A smaller airport dealing mainly with charter flights and budget airlines.
It is connected to Line A metro station Anagnina (about 30 mins by metro from Termini) by Cotral buses; ticket costs € 1,03.
Buses leave every 30-60 minutes
Buses connecting Ciampino airport with the centre of Rome stop running at 11pm, so the only way to get into town late at night is by taxi.
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TAXI
The price for a ride from Leonardo da Vinci (Fiumicino) Airport to the city centre (within the Aurelian Walls) is Euro 40,00.
The price for a ride from Ciampino Airport to the city centre (within the Aurelian Walls) is Euro 30,00.
You may be approached by illegal taxi drivers in the station and at the airport. If you need a taxi, look for the official white taxis which have meters. There are taxi stands at both Fiumicino and Termini.
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UNDERGROUND
Rome's metro system is very useful and quite safe as long as you are alert. Although the bus network is extensive and buses run frequently (though still crowded), the metro is much simpler to master.
The metro system has only two lines, A and B, which cross at Termini. Click here to see the map.
There are trains from 5.30 am until 11.30 pm every day (Sat. 0.30 am).

Metro stations on line A do not have facilities for disabled (except Cipro-Musei Vaticani and Valle Aurelia); In alternative, bus 590 follows the same route of metro line A and has wheelchair access (see "useful buslines below"). All the metro stations on line B have facilities for disabled except Circo Massimo, Colosseo and Cavour (direction Laurentina).

Metro A offers the possibility to organise itineraries particularly interesting both for shopping and for the visit of monuments.
Here is a list of metro A stops with possible itineraries:
" Cipro, is the privileged way to the Vatican Museums
" Ottaviano takes to S.Pietro.
" Lepanto to Via Cola di Rienzo, a shopping area right for every pocket
" Flaminio, both for a walk in Villa Borghese and the Pincio Terrace and a downtown shopping along Via del Corso, Via del Babuino, Piazza del Popolo and S.Maria dei Miracoli.
" Spagna, to Piazza di Spagna and the trendy Trinità dei Monti facing Via dei Condotti. Not far there is the Fontana di Trevi.
" Via Veneto and the Fontana di Trevi are near Barberini stop, the Terme di Diocleziano to the Repubblica stop.
" Vittorio Emanuele to the Basilica of S.Maria Maggiore
" S.Giovanni to the Basilica of S.Giovanni and the Scala Santa - Holy Steps
" Cinecittà takes to the film Studios.

Metro B stops relevant for tourists, instead, are the following:
" S.Paolo, to the Basilica di S.Paolo
" Piramide, to the Pyramid of Caius Cestius
" Circo Massimo and Colosseum, to Colosseum and the Roman Forum
" Cavour, to visit S.Pietro in Vincoli.

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Rome public transport system is called Metrebus, a combination of the words: metro (underground), treno metropolitano (urban train) and autobus (bus).
With Metrebus tickets you can travel on these three means of transport " on different routes " inside a city area " through different areas Fares depend only from the areas you cross, not from the number of means of transport you use. Tickets must always be validated " when getting on buses " before getting on metro and trains The bus and metro system is not free! Validate your ticket before boarding the metro; on buses, look for the orange stamping machines. If you are caught without a validated ticket, the fine to be paid ranges between Euro 50,00 and Euro 500,00.