2 operators run this water, from 5 h 35 to 10 h 15 — a difference of 4 h 40 on the same crossing. Sikinos has an airport 39 km from the quay, so this is a crossing you can make one way and fly the other.
One row per operator and speed. Where a service is sold as fast and its average does not clear 45 km/h, the word appears in quotation marks — the boat is fast craft, the crossing is not.
If this crossing does not suit, these quays also reach Sikinos without a change. It is the question a single-route page cannot answer about itself and an atlas can.
Anafi · Andros · Folegandros · Ios · Kea · Kimolos · Lavrio · Milos · Mykonos · Naxos · Paros · Piraeus-Athens · Santorini (Thira) · Serifos
Anafi · Athens (Rafina) · Folegandros · Ios · Kea · Kimolos · Lavrio · Milos · Mykonos · Naxos · Paros · Piraeus-Athens · Santorini (Thira) · Santorini Thira
Our records for the Kythnos–Sikinos crossing were read on 11 August 2026 and describe the network as it ran that week. We hold no month-by-month variation, so this page cannot tell you whether a crossing runs in February.
If you are travelling well outside August 2026, confirm with the operator before you plan around it.
No fares. The choice between Cyclades Fast Ferries at 5 h 35 and the slowest at 10 h 15 is mostly a price decision, and we hold no prices for either.
No departure times. No rate is held for this pair either, so we cannot say how often it runs.