It depends of where you're leaving to take the flight, I know Orbitz offers weekend fares that round from $200-$1500 this depends on wether you are close to Italy or further way, they also offer cheap anytime fares. There is also other websites such as travelocity, cheap tickets in which you can insert your information and find the best and cheapest tickets. Prices also vary widely depending on the airports, so you may want to consider that as well. Hoped this helped.
