Greek Island Ferries for Beginners

Which Athens port to use, which boat to pick, how to book and board, and what to do when the wind has other ideas. Everything we wish someone had told us before our first Greek ferry.

Greek ferries look intimidating from the outside: three ports around Athens, a dozen operators, timetables that change with the season and a port at Piraeus so big it has its own shuttle bus. In practice, the system is friendlier than it looks. Tickets are mostly digital, boats are generally punctual when the weather is calm, and for the popular islands there are several sailings a day in summer.

The catch is that Greek ferries are not trains. Routes change by season, some islands are only connected on certain days, and strong wind can delay or cancel sailings. Plan with that in mind and ferry days become part of the holiday rather than a source of stress.

Athens’ three ferry ports and how to reach them

Athens has three passenger ports for the Aegean islands. Which one you use depends on where you’re going, not on which looks closest on a map.

Finding your gate at Piraeus

Piraeus has numbered gates (E1 to E12) spread around a large harbour. Your ticket or booking confirmation should name the gate; that is the one that counts, because operators sometimes move ships between gates during the season. As a rough guide:

• Cyclades: usually gates E6 and E7, close to the metro station, with extra sailings at E4, E9 and E10. Western Cyclades boats often use E9 or E10.
• Saronic islands (Aegina, Agistri, Poros, Hydra, Spetses): usually E8, with some fast boats at E9.
• Crete: usually E2 or E3, on the far side of the port.
• Dodecanese (including Rhodes): usually E1, also on the far side.

Piraeus metro station sits opposite the central gates. For the distant western gates (E1 to E3), use the free port shuttle bus that starts near gate E5, or allow a long walk with luggage. If you’re arriving by taxi, give the driver the gate number, not just “Piraeus port”.

For more on combining the ports with an island route, see our Greek island hopping from Athens guide.

Conventional vs high-speed ferries

Most routes offer two very different kinds of boat, and the difference matters more than the price.

Our honest take: on a calm day, a fast boat is a great way to save time. On a windy day, or if anyone in your group gets seasick, the slower, bigger ferry is usually the more pleasant choice, even if it takes twice as long. And look at the arrival time, not just the duration. A slower ferry that gets in mid-afternoon can be a better holiday choice than a fast one that lands you at a port at midnight.

Seasickness, wind and cancellations

In midsummer the Aegean is often windy. The meltemi, a strong, dry northerly wind, blows most often in July and August and can last a few days at a time. When it’s strong, crossings get rough, smaller and high-speed boats are more likely to be delayed or cancelled, and the port authorities can order a temporary sailing ban.

If you’re prone to seasickness:

• Choose the largest conventional ferry on your route when the forecast is windy.
• Sit low and in the middle of the ship, facing forward, and look at the horizon. Avoid the front of the boat.
• Get fresh air on an open deck if there is one, away from exhaust.
• Eat lightly beforehand and take any motion-sickness remedy before you board, not once you feel ill.

If your sailing is cancelled: operators typically let you move to another departure or claim a refund when they cancel. Check your operator’s or booking site’s terms for the specifics. Practically, that means:

• Keep one or two buffer days at the end of an island trip.
• Spend your last night in Athens (or near your departure airport) before an international flight.
• Book refundable or flexible accommodation where a missed boat would hurt most.
• Watch your email and the operator’s app or website on windy days; changes are announced there.

How to book Greek ferry tickets

You have three main ways to book:

1. Directly with the operator. Every major operator sells tickets on its own website (see the operator table below). This is often simplest when you are taking a single company’s boats, and you deal with the operator directly if anything changes.
2. Through a ferry comparison site. Aggregators such as Ferryhopper and Omio show several operators side by side, which is very useful for island hopping when different companies sail different legs. Make sure the booking clearly states the operator, vessel, departure port and gate.
3. At a local travel agency or port ticket office. Useful in shoulder season or for last-minute changes, and staff can be a great source of local knowledge about the weather.

What you’ll need to book: passenger names as they appear on your ID (tickets are issued in your name), and vehicle details if you are taking a car. Discounts for children and some other groups exist, but you’ll usually need to show proof at boarding.

A note on car hire: many rental contracts don’t allow you to take the car on a ferry. If you want a car, it’s usually easier to rent separately on each island. Our Greek islands without a car guide shows which islands you can manage without one.

Port day: tickets, ID, luggage and seats

E-tickets and boarding passes

Most operators now use e-tickets. Typically you check in online during a window before departure (Blue Star and Seajets, for example, open web check-in 48 hours before and close it 2 hours before sailing) and receive a boarding pass to show on your phone or print. A few routes and operators still need a paper ticket, which you collect from the operator’s port office or agency before boarding. The booking confirmation should tell you which applies. Keep a screenshot in case you lose signal at the port.

Bring your ID

Carry your passport or national ID card. Operators can ask to see it alongside your boarding pass, and the name must match the ticket.

Arrive early

Aim to be at the right gate at least an hour before departure in summer, and earlier if you have a car or need to collect paper tickets. Operators set minimum check-in times that vary (Seajets, for example, asks foot passengers to be at the boarding area at least 30 minutes before departure), but at a busy port like Piraeus the walk or shuttle to your gate can eat up much of that. Boats often load and leave promptly, and the ramp closes before the departure time.

Luggage

There’s no checked luggage. You wheel your bags on yourself and usually leave larger cases in a luggage area near the entrance or on the car deck, then go up to the passenger decks. Keep valuables, medication and anything you’ll need during the trip with you. Watch for your port being announced, because at busy stops you’ll need to collect your bags quickly, and the ship may not stay long.

Deck, seats or a cabin?

• Deck / economy: the cheapest ticket. On conventional ferries you can sit in general lounges or outside. In peak season seats inside fill fast.
• Numbered or reserved seats: a guaranteed seat in a quieter lounge. Worth it for longer crossings.
• Business / VIP lounges: more space and calm on some ships; nice on a busy August day.
• Cabins: available on many conventional and overnight ferries. For the overnight crossing to Crete, a cabin means you arrive rested; see our Crete travel guide.

Reading timetables and when to book

Greek ferry timetables are published by season, and they change from one season to the next. A few things help:

• Summer schedules appear gradually. Operators release routes over the winter and spring, so a sailing you want for August may not be bookable yet in January. The main Athens-to-island routes tend to appear before some inter-island links. If a route isn’t showing, it usually isn’t cancelled, just not published yet.
• Summer is the busiest period. In July and August most routes have their most frequent sailings, including many seasonal high-speed services.
• Services thin out outside summer. In spring and autumn, some routes drop to a few days a week, and high-speed boats may stop. In winter, conventional ferries carry most routes and smaller islands may be connected only on certain days. If you’re travelling in shoulder season, see our Greek islands in September and Greek islands in October guides.
• Not every island links every day. Plan your route around actual sailings for your dates, then book accommodation, never the other way round.
• Check the port name. Some islands have more than one port, and Athens itself has three. Santorini’s ferries, for example, use Athinios port, not the old port below Fira.

When to book:

• July and August: book as soon as your dates are fixed, especially for popular departure times, cabins, business seats and vehicles. Weekend sailings around Greek holidays also fill early.
• June and September: booking a few weeks ahead is sensible for popular routes; foot passengers often have more flexibility.
• Spring, late autumn and winter: you can often book a few days ahead, but check that your route is running at all.

Before you buy any non-refundable rooms, confirm the ferry leg exists on that date. It’s the single most useful habit in Greek island planning.

Who sails where: the main operators

You don’t need to memorise these, but knowing who runs what helps when a comparison site shows nothing or a route seems to have vanished. Areas and boat types are as listed by the operators and Ferryhopper in October 2026; networks change each season.

Karystia Travel (Marmari Express) also sails Lavrio–Kea–Kythnos; see karystia-shipping.com, or book through a comparison site or the Lavrio port agency.

The Western Cyclades: Kythnos, Serifos, Sifnos and Milos

The Western Cyclades are where beginners most often get confused, because operators have changed in recent years. Here’s who sails as of autumn 2026:

• Seajets runs high-speed boats from Piraeus to Serifos, Sifnos and Milos (some continuing to Folegandros, Ios and Santorini), with the most sailings in summer.
• Fast Ferries runs the conventional Dionysios Solomos from Piraeus to Serifos, Sifnos, Milos, Kimolos and on to Folegandros, Sikinos, Ios and Santorini. Outside high summer it runs on fewer days of the week.
• Blue Star Ferries serves Serifos, Sifnos and Milos from Piraeus on some days, and the overnight ANEK/Blue Star (Chania) and Minoan (Heraklion) ships call at Milos every night, in the small hours. Handy if you don’t mind a 2am arrival.
• From Lavrio, Kythnos (and Kea) is the main route, with Goutos Lines, Triton Ferries, Karystia Travel, Magic Sea Ferries and Blue Star. Some seasonal sailings continue from Lavrio to Serifos, Sifnos, Milos and Kimolos.
• Aegean Speed Lines / Aegean Sea Lines, long associated with this area, no longer sail it. Ferryhopper notes the company is not serving the route in 2026, and its last ship was sold to Seajets in summer 2026. If you see it on an old timetable, ignore it.

Planning a trip here? Our Serifos, Sifnos and Milos guides cover each island, and they pair well as a slower route.

Common beginner routes and journey times

Journey times depend on the boat, the number of stops and the season. These are indicative ranges from Ferryhopper and operator listings checked in October 2026, rounded. Use them for planning, then check your actual date.

Not sure where to start? Our guide to the best Greek islands for first-time visitors suggests easy first combinations, and the 7-day, 10-day and 14-day itineraries map out the ferry legs for you. Watching costs? See Greek islands on a budget and the cheapest time to visit the Greek islands.

Frequently asked questions

The bottom line

Greek ferries reward a little preparation. Pick your islands and sailings first, book early for summer, check in online, keep your ID handy and get to the right gate in good time. Treat the wind as part of island life rather than a disaster, keep a buffer before your flight home, and ferry days can become some of the best memories of your trip: coffee on deck, islands sliding past, and a new harbour coming into view.

Ready to plan your route? Start with Greek island hopping from Athens, or browse all our island guides from the homepage.