Leaving Schinoussa is a slow goodbye. The island is one of the Small Cyclades between Naxos and Amorgos, a low, quiet place of footpaths, small beaches and a village on the hill above the harbour at Mersini. The ferry that takes you back to Athens calls at other islands on its way to Piraeus, so the trip home becomes a day-long tour of the central Cyclades.
Our route data lists Blue Star Ferries on the direct line, running all year about 3 to 5 times a week, with the fastest crossing at around 6 hours and fares from €33.50 for one adult. We could not cross-check these figures against a Ferryhopper route page, because Ferryhopper does not publish one for this pair, or against a sampled timetable, so use them to plan and the booking page to decide.
The key planning point is the departure day. With only a few direct sailings a week, the ship sets your leaving date, and if you have a flight from Athens you should aim to reach Piraeus the day before an international departure. When the direct day does not suit, the local boats from Schinoussa to Naxos open up many more sailings to Piraeus, as well as the airport on Naxos.
Our data also lists Small Cyclades Lines on this route. That company is the local operator of the Small Cyclades, so check on the booking page whether a given option is a direct sailing or a combination with a change of boat. Book early in July and August, when the few direct boats fill with island-hoppers heading back to the mainland.