Cycladic island served by ferries to Lavrio and other Aegean ports. Kythnos offers a quieter Cycladic setting with traditional villages, coves and thermal-spring history.
Ferries generally use the island’s principal harbour area; check the exact port name on the ticket and arrange onward transport to villages or beaches.
For ferry planning, start with the sailing rather than the sightseeing itinerary. Check the exact port, boarding time and passenger or vehicle conditions, then work backwards to decide where to stay and how much transfer time is needed. Vehicle space and frequency vary by vessel and season; search the exact travel date.
This FerryEU guide concentrates on routes that were confirmed as available in the Direct Ferries booking inventory at the 20 September 2026 review. A route can still be seasonal or unavailable on a particular day, so the live search is essential before making non-refundable onward arrangements.