The two airports in Rome, the Fiumicino Airport / FCO (Leonardo da Vinci airport) and the Ciampino Airport, both provide airport transfers. The FCO is the more widely used airport and offers more variety of transfers. You can choose from a taxi, a private car, a metro or even a shuttle, depending on how many people you're travelling with, your schedule, time of day you travel, and budget. There's also a train that you can take to the central Roma Termini Station, which offers more connectivity to different parts of the city.

You have a variety of public transportation in Rome available when it comes to a transfer from the airport to Rome, these are:

Yes, a shuttle bus is available to take you from the airport to the heart of the city. Most shuttles take you to the Roma Termini Station, which provides further connectivity to other parts of the city.

Ideally, the best way to get from the airport to the city is by train. There are two trains that you can hop on to enter the city: the Leonardo Express and the local FL1 Regional Train. Tickets can be bought online or from the machines at the airport. Another option is to use the shuttle services (highly recommended if you're travelling in a group), as they're cost effective, time-friendly and guarantee comfort.

Essentially there are three things that'll determine your route: your budget, time of day, and consequently, the availability of transport options for you.
If you don't mind splurging a little, a taxi or a rental is next to the best option for you. Especially because the time of day won't really affect these services. And if you're a female traveler, taking a taxi sometime between 9:00 AM to 8:00 PM is the good alternative if you don't mind spending a little more than usual. If you are traveling at odd hours, you can also opt for the night bus.

When you're traveling in a group, budget is not one of your primary concerns, as costs can be split well and equally. Thus, getting into a taxi or a smaller shuttle bus is an ideal option. With both of these options, you can stick with your group throughout, while avoiding the hassle of switching train/metro routes.

When compared to public transport, taking a taxi will cost you more. On average, the fare from the airport to Rome City Center would cost approximately €48.

Pricing for the metro from the Rome airport starts at around €14 per person and increases as the distance increases. You can travel from and to the airport in around 30 minutes.

If you are traveling by taxi or train, it should take you about 40 minutes to get to the city center, and slightly longer, say up to an hour if you travel by bus.

Yes, there are several transport options if you are traveling at night in Rome. Trains operate between 5:30 AM to 11:30 PM daily, and till 12:30 AM every Saturday. Beyond this, you can avail the services of night buses that start from midnight and run till 5:00 AM. Alternatively, night taxis are also available, but at a higher price than public transport.