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waypoints / 🇬🇷 GR / Kythnos – Serifos Timings are not live · Documented
Route · GR

Kythnos to Serifos

4 operators run this water, from 40 min to 1 h 25 — a difference of 45 min on the same crossing.

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 Kythnos → Serifos 30 km fast crossing 40 min fast rate not held 45 km/h average
Magic Sea Ferries Kythnos → Serifos 30 km conventional crossing 1 h 10 rate not held 26 km/h average
Cyclades Fast Ferries Kythnos → Serifos 30 km fast crossing 1 h 25 "fast" rate not held 21 km/h average
Aegean Sea Lines Kythnos → Serifos 30 km conventional crossing 1 h 25 rate not held 21 km/h average
Operator not recorded Kythnos → Serifos 30 km crossing not held rate not held

Other ways to reach Serifos

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

Sifnos – Serifos 20 min Aegean Sea Lines, Blue Star Ferries
Kimolos – Serifos 50 min Aegean Sea Lines, Blue Star Ferries
Milos – Serifos 1 h 10 Aegean Sea Lines, Blue Star Ferries
Paros – Serifos 2 h 05 Blue Star Ferries, Hellenic Seaways
Folegandros – Serifos 2 h 20 Cyclades Fast Ferries, SeaJets
Lavrio – Serifos 2 h 30 Magic Sea Ferries
Santorini (Thira) – Serifos 3 h 20 Cyclades Fast Ferries, SeaJets
Santorini Thira – Serifos 3 h 20 Cyclades Fast Ferries, SeaJets
Piraeus-Athens – Serifos 3 h 45 Aegean Sea Lines, Cyclades Fast Ferries
Sikinos – Serifos 4 h 05 Cyclades Fast Ferries

And other ways to reach Kythnos

Lavrio – Kythnos 1 h 10 Blue Star Ferries, Hellenic Seaways
Sifnos – Kythnos 1 h 10 Aegean Sea Lines, Cyclades Fast Ferries
Kea – Kythnos 1 h 25 Blue Star Ferries, Hellenic Seaways
Piraeus-Athens – Kythnos 1 h 35 Aegean Sea Lines, Cyclades Fast Ferries
Kimolos – Kythnos 1 h 40 Aegean Sea Lines, Blue Star Ferries
Milos – Kythnos 2 h 15 Aegean Sea Lines, Blue Star Ferries
Syros – Kythnos 2 h 40 Blue Star Ferries, Hellenic Seaways
Anafi – Kythnos 3 h 00 SeaJets
Andros – Kythnos 3 h 00 Blue Star Ferries, Hellenic Seaways
Mykonos – Kythnos 3 h 00 SAOS Ferries

Where else these quays go

Also from Kythnos

Anafi · Andros · Folegandros · Ios · Kea · Kimolos · Lavrio · Milos · Mykonos · Naxos · Paros · Piraeus-Athens · Santorini (Thira) · Sifnos

Also from Serifos

Amorgos · Andros · Folegandros · Heraklion · Ios · Katapola · Kea · Kimolos · Koufonisia · Koufonissi · Lavrio · Milos · Mykonos · Naxos

Which months this runs

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

Our records for the Kythnos–Serifos 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. The choice between SeaJets at 40 min and Aegean Sea Lines at 1 h 25 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.