In general, when booking your flight to Greece, January is the cheapest month on average.
Most flyers found that booking flight tickets 60 days in advance of their planned departure date is, on average, the best time to get cheap flights to Greece.
From most locations, the cheapest flights to Greece are found on a Wednesday. Booking a Saturday departure is usually the most expensive.
Typically, cheap prices to Greece are most often found for afternoon flights. Cheap prices are less likely for evening flights.