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waypoints / Koufonissi – Sifnos Timings are not live · Documented
Route

Koufonissi to Sifnos

1 operator run this water, from 3 h 40. Sifnos has an airport 37 km from the quay, so this is a crossing you can make one way and fly the other.

Every way across

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.

SeaJets Koufonissi → Sifnos 83 km fast crossing 3 h 40 "fast" daily 23 km/h average
Operator not recorded Koufonissi → Sifnos 83 km crossing not held rate not held

Other ways to reach Sifnos

If this crossing does not suit, these quays also reach Sifnos without a change. It is the question a single-route page cannot answer about itself and an atlas can.

Kimolos – Sifnos 20 min Aegean Sea Lines, Blue Star Ferries
Serifos – Sifnos 20 min Aegean Sea Lines, Blue Star Ferries
Milos – Sifnos 40 min Aegean Sea Lines, Blue Star Ferries
Paros – Sifnos 55 min Blue Star Ferries, Hellenic Seaways
Kythnos – Sifnos 1 h 10 Aegean Sea Lines, Cyclades Fast Ferries
Mykonos – Sifnos 1 h 50 SeaJets
Folegandros – Sifnos 1 h 55 Cyclades Fast Ferries, SeaJets
Piraeus-Athens – Sifnos 2 h 30 Aegean Sea Lines, Cyclades Fast Ferries
Santorini (Thira) – Sifnos 2 h 50 Cyclades Fast Ferries, SeaJets
Santorini Thira – Sifnos 2 h 50 Cyclades Fast Ferries, SeaJets

And other ways to reach Koufonissi

Schinoussa – Koufonissi 10 min Blue Star Ferries, SeaJets
Iraklia – Koufonissi 25 min Blue Star Ferries, SeaJets
Katapola – Koufonissi 25 min Blue Star Ferries, SeaJets
Naxos – Koufonissi 40 min Blue Star Ferries, SeaJets
Donoussa – Koufonissi 1 h 10 SAOS Ferries, Small Cyclades Lines
Paros – Koufonissi 1 h 20 Blue Star Ferries, SeaJets
Mykonos – Koufonissi 1 h 30 Cyclades Fast Ferries, SeaJets
Santorini (Thira) – Koufonissi 1 h 50 SeaJets
Aegiali – Koufonissi 2 h 30 Blue Star Ferries, Small Cyclades Lines
Ios – Koufonissi 2 h 55 Sea Jets, SeaJets

Where else these quays go

Also from Koufonissi

Aegiali · Amorgos · Athens (Rafina) · Donoussa · Folegandros · Heraklion · Ios · Iraklia · Katapola · Milos · Mykonos · Naxos · Paros · Piraeus-Athens

Also from Sifnos

Amorgos · Andros · Athens (Rafina) · Folegandros · Heraklion · Ios · Katapola · Kea · Kimolos · Koufonisia · Kythnos · Lavrio · Milos · Mykonos

Which months this runs

Season not heldwe can say when we looked, not which months run

Our records for the Koufonissi–Sifnos 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.

What we do not know

No fares. Not for this crossing, not for any crossing, not for any mode.

No departure times. A weekly rate is a lower bound on how often the crossing runs — never a clock.