Travelling from most locations, it is best to book your flight to Palermo during the month of March for the best deal, although there are other times of the year which offer great deals as well.
In general, most flyers find the cheapest time to book a flight to Palermo is about 54 days prior.
From most locations, the cheapest flights to Palermo are found on a Tuesday. Booking a Saturday departure is usually the most expensive.
Typically, cheap prices to Palermo are most often found for afternoon flights. Cheap prices are less likely for morning flights.