7 Days 6 Nights. We just returned from Greece. Athens (port of Piraeus) Santorini Schedules frequency: Every day Earliest ferry: 07:00 Latest ferry: 23:59 Average duration: 6h 29m Price range: 35. Heraklion Santorini fares, Heraklion Santorini > availability, Heraklion Santorini daily cruises, Heraklion Ios fares.