Small East Cyclades islands where Thonousa belongs to are connected with the port of Piraeus through line: Paros - Naxos - Thonousa - Egiali - Katapola - Astipalea - Kalimnos - Kos - Nisyros - Tilos - Simi - Rhodes. Or through line: Syros - Paros - Naxos - Iraklia - Schinousa - Koufonisia - Thonousa - Egiali - Katapola. Thonousa is connected to Naxos through local routes.
For more information:
PORT AUTHORITIES OF PIRAEUS 210 4226000
PORT AUTHORITIES OF NAXOS 22850 22300