There are several ways to get to Andros by ferry, since the island is connected in many ways to the mainland and the surrounding islands. There are no ferries from Piraeus to Andros. Ferries to Andros depart only from the port of Rafina, located 40 km from the center of Athens, and 10 km from the “El. Venizelos” Airport.
The trip from Rafina to Andros takes 2 hours.
From the “El. Venizelos” Airport: Buses depart daily from the bus stop between the Exits 2 and 3 of the arrivals hall (opposite Sofitel Hotel). A bus departs approximately every 1 hour from 06:00 am until 21:45 pm. The journey takes about 30 min and the ticket costs 3.00€.
For more details on the schedule click here