Santorini to Milos Ferry: Boats, Crossing Times and How to Book

Ferries link Santorini and Milos all year, and the fast boat makes the trip direct in about 2 hours. Seajets runs that high-speed crossing. Fast Ferries runs a slower conventional ship that may call at other islands on the way, so the trip takes noticeably longer than on the high-speed boats. Summer brings several sailings a day, and winter service shrinks to a couple a week, so check the timetable for your dates before you plan anything around it.

Which ferry should you take?

The conventional ferry is the slow, steady choice. It's larger and much cheaper, with outdoor decks, room to walk around and easy sea views. If you get seasick, travel with kids, or simply enjoy watching the islands slide past, take it whenever its schedule fits your plans.

The high-speed catamaran is the boat for days when the hours matter more than the fare. Seajets runs the quickest crossings on many summer dates and can save you several hours. Seating is enclosed, there's less freedom to move around, and the ride gets rougher in strong wind. Fast boats are also more likely than big ships to have their schedules changed by the weather.

Vehicle space is limited and needs its own ticket.

How long does the crossing take?

The fast boat takes about 2 hours. Two boats leaving at similar times can arrive hours apart, so compare the full route along with the departure time.

Ferries that reach Santorini after calling at other islands are more prone to delays, particularly later in the day. A boat can be on time, 20 minutes behind, or much later. Leave your first hours in Milos free of any tightly timed transfer, boat tour, dinner reservation or flight.

How often do ferries run, and when?

In summer, expect up to 3 departures a day, usually in the morning or afternoon. Come winter, expect just a sailing or two each week.

How much does the ferry cost?

Fares vary with the operator, the vessel, the date and the seat class, and booking early often brings them down. VIP and business seating costs more than a standard ticket and gives you extra space and a calmer atmosphere. Child discounts vary by ferry company and by how old your child is, so enter each traveler's real age when you book.

Weigh the whole journey along with the fare. A bargain fare can lose its appeal if the boat arrives late at night or adds 3 hours to your day, since that may cost you a hotel night or a dinner.

How do you book?

Summer visitors in July and August will want to reserve once their dates are settled, particularly with a vehicle or a favorite fast departure in mind. In May, June, September and October, booking several weeks out usually works well, and it helps to go earlier when just one sailing fits your plans. Winter seats tend to stay available, but with so few sailings it pays to plan ahead.

Some companies issue the pass right away, and others ask for online check-in shortly before departure, so follow the instructions in your confirmation email. Saving your boarding pass or a screenshot before you leave the hotel is a good habit, since phone reception can be spotty at a busy port.

Where do the boats leave from, and how do you get there?

All passenger ferries leave from Athinios Port, on Santorini's western coast at the foot of the caldera cliffs, about 5 miles (8 km) from Fira. The Old Port below Fira is for cruise ships and smaller boats, so head to Athinios for your ferry.

The road down to Athinios is steep and winding, and it can back up badly when several ferries come or go around the same time, especially from June through September. Uber on the island sends licensed taxis or transfer vehicles when they're free, but supply is thin, so don't count on one at the last minute. Your hotel or driver can suggest a pickup time that fits your location, your departure, how busy the port will be, and how many kids or bags you have. From Oia or Imerovigli, allowing 2 to 2½ hours before a summer sailing is a sensible cushion.

Buses to the port start from the main station in Fira and are matched to ferry departures. They're cheap and work well for solo travelers with light bags, though they can be crowded. If you're staying in Oia, Imerovigli, Kamari or Perissa, you'll need a bus or taxi to Fira first. Bus times change with the ferry timetable, so check the schedule shortly before you travel.

If you have a rental car, the company can collect it at Athinios when you arrange it in advance. Check the meeting spot and the return steps ahead of time, since room to park or stop near the ramps is tight.

Aim to reach the port 45 to 60 minutes before departure. Leaving your hotel early enough to beat the traffic is what counts, and arriving hours ahead gains you little. If your vehicle is going on board, follow the operator's check-in directions and plan to get there ahead of walk-on passengers.

Things get hectic when arriving passengers mingle with those waiting to depart, and the ramps carry foot traffic, luggage, cars, buses and trucks all at once. Keep kids close, watch the signs and listen for boarding calls. Ferries load quickly, but wait near the cafés or designated areas instead of beside the water when wind or vehicle traffic makes it uncomfortable.

What's the ferry like on board?

Large bags go in luggage racks near the entrance. Allowances are generous, and normal holiday suitcases aren't weighed.

Don't expect a proper meal on a fast boat. Bring your own food and water, or eat before boarding if you're sailing around lunch or dinner.

If seasickness worries you and you're on the fast boat, many travelers find it helps to sit near the middle, watch the horizon, keep the meal before departure light, and take motion-sickness medication ahead of time following the package directions or your doctor's advice.

What's it like arriving in Milos?

Boats pull into Adamas, the main port town of Milos, which is among the easier ferry arrivals in the Cyclades. The village is a 2-minute walk from the quay, with hotels, restaurants, cafés, rental offices and taxis close by. Many Adamas hotels sit within a 5 to 15 minute walk. The waterfront is flat, though hotels up the hills behind town mean a steeper haul with luggage, sometimes with stairs, so look at the exact route before booking.

Milos buses start from the main square in Adamas, a short walk from the port, and the printed timetable is posted there and around the port area. Lines to Plaka and Pollonia run all year, and summer adds beach routes such as Sarakiniko. A taxi stand sits near the dock, but Milos has a small fleet of taxis, so lines can build quickly when a busy boat comes in. Uber and Bolt don't operate on Milos. If you're staying outside Adamas, in Pollonia or at a remote villa, arriving in the evening, or traveling with young kids or lots of luggage, ask your hotel to arrange a pickup.

You can manage a short stay in Adamas without a car, but you'll see far more of Milos with one, since the buses skip the dirt roads that lead to many of the island's best spots. In July and August, reserve your rental car well ahead and arrange to pick it up at or near the port.