Please be aware that Rome has multiple airports and that these results are only for Leonardo da Vinci–Fiumicino Airport.
The best month to arrive at Rome is January and the most expensive month to fly is April. (Average prices, based on 240 datapoints.)
The best day to arrive at Rome is Monday and it would be best to avoid Saturday, as prices are on average 56.42% higher than on Monday. (Average prices, based on 638 datapoints.)
The cheapest airline flying to Rome is Alitalia. They are 41% cheaper than Ethiopian Airlines. (Average prices, based on 247 datapoints.)