Santorini (Thira) - Kythnos
Ferries to Cyclades Islands
Santorini (Thira) - Kythnos
Ferries to Cyclades Islands
Compare live pricing across ferry operators worldwide and find the sailing that fits your trip. Booking sooner rather than later is the simplest way to secure the best fares and the widest choice.
Direct Ferries runs discounts across the calendar year. If your route qualifies for a senior discount, it's applied for you automatically as soon as you choose the correct age bracket in the passenger options when you search.
Students and recent graduates qualify for a 5% saving on their ticket. Register with our partner Student Beans to confirm your eligibility, then apply the discount code you receive at checkout.
A resident discount is also on offer for a number of Spanish and Italian crossings — select the "Residents" option where available and the price will adjust automatically. Make sure you can show proof of address, such as a residency certificate or ID card, when you check in.
Document requirements differ by route, so check what you'll need well before departure. Travelling from Santorini (Thira) to Kythnos generally calls for a valid passport, plus any visa or national ID your nationality requires. Since rules depend on both your citizenship and your destination's regulations, our Check-in, Travel Documents & Tickets guide is a good place to check the details and avoid delays at check-in.
Getting your tickets is simple — enter your departure port, arrival port, and preferred travel date to see every fare and sailing available. From there, you can compare alternative routes and departure times to land on the best option for your trip.
Watch for early-bird pricing and flexible ticket formats, such as upgrades or flexi-fares that allow later changes or cancellations. Enter your details accurately, including passenger count and vehicle information, to keep your booking process smooth.
A confirmation email lands in your inbox the moment your booking is finalised. How your boarding pass gets issued from there depends on the specific ferry operator.
Certain operators release your boarding pass right after booking; others want you to check in once you reach the port. Where available, the Direct Ferries app lets you check in online ahead of time.
Ticket desks sit near the ferry terminal in most cases. Give yourself extra time before departure to collect your tickets and complete check-in without stress.
You'll need to present your confirmation email plus valid photo ID — a passport or identity card — at check-in. Pet owners should bring vaccination and insurance paperwork, and anyone using a resident discount should have proof of address on hand.
A handful of reasons can explain the lack of departures from Santorini (Thira) to Kythnos on your selected date — timetable adjustments, sold-out sailings, or a seasonal gap are the usual culprits. Try a different date or browse other routes through our Route & Port finder.
Booking your Santorini (Thira) to Kythnos ferry early usually pays off, both in terms of price and choice — earlier bookings tend to unlock better fares and more departure and cabin options.
A few weeks' notice is generally enough to catch the best deals, though fares can still move depending on the season and remaining availability.
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| Santorini (Thira) - Kythnos Ferry Route Prices |
|---|
| Santorini (Thira) - Kythnos Ferry Route Summary | |
|---|---|
| Origin | Cyclades Islands |
| Destination | Cyclades Islands |
| Distance | 0 Nautical Miles |
* Prices subject to change, pricing is taken from last 30 days, last updated 1 August 2026.
Located in the southern Aegean Sea is the Greek island of Santorini and lies around 200 km to the south east of the Greek mainland. It forms part of the Cycladic group of islands and is the only location in Europe to have a hot desert climate. A popular pastime for visitors to Santorini is to take a cruise to the island's three islets, which were created in ancient times during a volcanic eruption. The islets are called Nea Kammeni, Palea Kammeni and Thirassia and provide an excellent vantage point for visitors to see the volcano, being located to the west of the island. The island's capital is Fira and is full of typical Cycladic houses with whitewashed walls, blue domed churches and stepped streets full of shops, cafes, restaurants and bars.
The island of Santorini has two ports. The main port is Athinios, where all the ferry and commercial boats arrive. There is also the Old Port which is mostly used for cruise ships. From the main port, ferries can be taken to Piraeus, Rafina and to the other islands in the Cyclades. Both conventional and high speed ferries operate on these routes.
Kythnos is a Greek island that is located very close to Attica and is part of the Cyclades group of islands. The island, sometimes called Thermia because of the thermal springs on the island, is one of the lesser visited islands of the Cyclades but is popular with visitors because of its thermal springs. There is a modern spa located in Loutra, with two hot springs in the area. The spring of Ayio Anargyroi and the spring of Caucasus, where the temperature of the water reaches 52C, are famous for their therapeutic effects and have been since ancient times.
The island's harbour is located at Merihas and the island's capital is called Hora and are both located in the north of the island. In the south, only the areas by the bay of Ayios Dimitrios and Panayia Canála are inhabited. This is where a famous monastery is located within a pine forest.
Ferry services from Kythnos depart to the Port of Piraeus or to the port of Lavrio. The crossing to Piraeus takes approximately 3 hours by conventional ferry and approximately one hour by high speed ferry. The crossing time to Lavrio takes about 2 hours. Kythnos is also connected by sea with the islands of Serifos, Sifnos, Milos, Santorini, Sikinos, Folegandros and Kea.
