For most people, an Italy trip begins with a flight to Italy. Most people choose from between two main cities in the country for their arrival, but there are other options. In addition to the major international airports in the country, there are many more airports in Italy to choose from – and if your flight route from home includes a stopover in Europe before you even arrive in Italy, you may be able to switch to a budget carrier at that point to save money.
Italy may not be a huge country by some standards, but depending on your particular Italy itinerary it might be both faster and cheaper to fly between certain cities rather than take ground transportation.