Santorini Port: Cruise to Volcano, Hot Springs & Thirassia

Santorini’s best scenery is not only seen from the cliff towns. This six-hour boat trip takes you into the caldera, where you can walk across the black volcanic slopes of Nea Kameni, swim toward the sulfur pools of Palea Kameni, and look back at Fira and Oia from the water. I like the mix of activity and free time, especially the volcano walk and the relaxed stop on Thirassia.

I also like the price. At about $41 per person, you get transport by boat, a guide, three distinct stops, and a long cruise around the caldera. Drinks cost extra, but the onboard bar is handy. The main drawback is that this is an active day: the volcano trail is rocky, Thirassia involves steep steps if you climb to Manolas, and the hot-spring swim lasts only about 30 minutes.

Key points to know before booking

• The volcano hike costs €5 extra in cash: Bring coins or small notes, since the entrance fee is not included.
• You swim from the boat to the hot springs: Wear your swimsuit under your clothes, and bring a dark one because the sulfur water may discolor light fabric.
• Thirassia gives you free time, not a guided village tour: You can eat by the dock, climb to Manolas, or simply enjoy the shore.
• The caldera views are a major part of the day: The return route passes below Oia, Imerovigli, and Fira.
• Good shoes matter: Both Nea Kameni and the climb on Thirassia have uneven, tiring surfaces.
• Hotel pickup is optional: If selected, the boat leaves from Athinios Port at 9:45 am. Otherwise, meet at the Santo Star Office at Fira Old Port at 10:15 am.

Why this Santorini boat trip is worth considering

This excursion works because it covers several sides of Santorini in one outing. You get geology at Nea Kameni, a short swim at Palea Kameni, lunch and free time on Thirassia, and a broad view of the caldera from the sea.

I would not book it if you want a quiet luxury cruise with no walking. The boat can feel full, the schedule is fixed, and the volcano and Thirassia stops require effort. But if you want to understand how Santorini was formed and see the island from a different angle, this is a strong value.

The crew and guides are a big part of the experience. Guides named Roula, Yannis, Gianni, Georgia, and Jonas have been praised for clear explanations and friendly help, though the exact guide depends on the departure. Commentary is given in English, with audio information on the boat. Some departures may also have multilingual support.

Meeting at Fira Old Port or starting with hotel pickup

The standard meeting point is the Santo Star Office at Fira Old Port. You are asked to arrive at 10:15 am for a 10:30 am departure.

The phrase Fira Old Port matters. This is down below the cliff town, not in central Fira. You may need the cable car to reach the port, or you may walk down the steep route. The cable car costs €12 each way according to the current details, though one booking note mentions a €10 payment, so check the price locally before relying on it. A donkey ride is also available in the port area, but it is an optional personal expense and not included in the excursion.

If you choose hotel pickup and drop-off, the cruise leaves from Athinios Port at 9:45 am. Pickup may not reach every hotel entrance. If your accommodation sits on a narrow lane or in a pedestrian area, the operator assigns a nearby walking meeting point. Check your email for the exact place and time, and contact MTM Travel at least a day before departure if the message has not arrived.

This transfer option is worth paying for if you are staying away from Fira or do not want to manage the cliff-port connection. Several people found the transport on time and easy to use. It also takes some pressure off a busy morning.

Sailing into the caldera

Once aboard, settle into the boat and claim a place on the shaded deck or roof area if available. The boat is described as a traditional-style sailing vessel with plenty of seating, though it may be full on popular dates. It is not an intimate private sailing trip. Think of it as a shared excursion with room to sit, move around, and look out from different levels.

The boat has a small toilet and an onboard bar. Food and drinks are not included, but drinks are available for purchase, and several people found the prices reasonable. Some departures have offered later happy-hour pricing. Still, carry water, especially in summer, because the volcano walk is exposed and tiring.

The first part of the trip is about seeing Santorini from below. The cliffs show layers of volcanic rock, while the white settlements sit high above the water. Audio commentary and the guide’s explanations give the views some meaning: this is not simply a boat ride past pretty buildings, but a look at an island shaped by eruptions and a collapsed volcanic basin.

Nea Kameni and the walk to the crater

Nea Kameni is the most active part of the day. After the boat docks, you have the option to pay the €5 entrance fee and walk toward the crater area. Bring cash because the fee is cash only.

The trail crosses dark, rough volcanic ground. It is not a long mountain trek, but the surface is uneven and the sun can be strong. Comfortable walking shoes are far better than sandals. Bring a hat, sunglasses, sunscreen, and water.

The hike is described as manageable for most people in average condition, but it is still a proper uphill walk. You can stop partway if you do not want to reach the highest point. From higher ground, the reward is a wide view of the caldera and the surrounding islands. The rock formations feel unusual because you are walking on a relatively stark volcanic island rather than through a developed resort area.

The guide gives information about the volcano and the geological formation of Santorini. This is where the commentary adds real value. Without it, Nea Kameni is a striking walk over black rock. With it, you get a clearer sense of why the caldera looks the way it does.

Do not expect steaming lava or a dramatic crater scene. The appeal is the bare volcanic terrain, the views, and the chance to walk on an active volcanic site. That distinction helps set fair expectations.

Palea Kameni and the sulfur-water swim

The next stop is Palea Kameni, known for its hot springs. The boat does not normally pull up to a beach where you simply step ashore. Instead, you swim from the boat toward the warm, sulfur-rich water.

You are given foam pool noodles, which help if you are not a confident swimmer. Life jackets are provided only in an emergency, so this is not a supervised flotation session. You need to be comfortable entering the water and swimming a short distance. Some parts have rocks below the surface, so follow the crew’s directions and move carefully.

Wear your swimsuit before you reach the stop. Changing on the boat can be awkward, and the onboard toilet is small. A dark swimsuit is a smart choice because the yellow-brown sulfur water may stain or discolor pale fabric. Bring a towel and a dry layer for the ride afterward.

The water may feel warm rather than truly hot, and the stop is brief, often around 30 minutes. I would treat it as a refreshing volcanic swim, not a long spa visit. The actual swim toward the bay can be more enjoyable than the water itself. You get the fun of jumping from the boat, paddling across the caldera, and seeing the dark shoreline at close range.

If you are not a strong swimmer, you can remain aboard. The swim is optional, and the boat still offers views while others enter the water.

Thirassia, lunch, and the climb to Manolas

Thirassia is the longest stop, usually about two hours. This is your chance to slow down after the volcano and hot springs.

At the waterfront, you will find restaurants and places to eat. Food is not included, so compare menus before choosing. Local dishes, frappes, and baklava are among the choices mentioned by people who made the climb to the village. Prices and quality can vary, so a little care at the start of your free time is wise.

You have two main options. Stay near the harbor for lunch and an easy stroll, or climb the winding steps toward Manolas. The climb takes effort, but it gives you a higher view across the bay and back toward Santorini. Some people found the view worth every step. Others felt that the uphill village had little to do beyond the scenery and would have preferred more time by the water.

A traditional donkey ride may be available for the climb, at your own expense. Do not count on it, though. Availability can change, and one departure found that walking was the only option. If you do walk, wear proper shoes and leave enough time to return to the boat.

Two hours can feel generous if you want lunch and a short walk. It can feel tight if you climb all the way to Manolas, eat there, and want time to browse the waterfront. Plan your stop before heading uphill. I would either make the village climb your main goal or stay below and enjoy a slower meal.

Thirassia is not a polished resort stop. That is part of its appeal. It gives you a quieter, simpler view of the caldera, with fewer grand hotels and less of the cliff-town spectacle.

The return route below Oia, Imerovigli, and Fira

The ride back is not just transportation. The boat follows the caldera and passes below the famous cliff settlements. From the water, Oia, Imerovigli, and Fira look different from the familiar postcard view.

You see the volcanic rock layers beneath the white buildings and understand how high the towns sit above the sea. This is one of the strongest reasons to choose a boat trip rather than spend the whole day on land. You also get a calmer period after the hike and swim.

The return sailing can be long, which some people love and others find slow. Use it to sit on the roof deck, buy a drink, listen to the commentary, and take photos without rushing. Some departures include music and a lively atmosphere, while others may feel more relaxed. The exact mood depends on the crew and the group.

If you have already spent several days looking at Santorini from Fira or Oia, this angle adds something new. If you dislike extended boat time, the final stretch may test your patience.

Price, pace, and overall value

At $41 per person, this is inexpensive for a six-hour Santorini outing. The price includes the boat, guide, audio commentary, volcano hike option, hot-spring stop, pool noodles, and free time on Thirassia. Hotel transport is included only when you select that option.

You should budget extra for:

• The €5 volcano entrance fee, cash only
• Food and drinks
• The cable car, if you use it to reach or leave Fira Old Port
• Any donkey ride on Thirassia
• Hotel pickup, if offered as a paid option

The value is strongest if you use all three stops. A short visit to Nea Kameni, a swim at Palea Kameni, and lunch on Thirassia would cost more to arrange separately, and you would have to manage the boat connections yourself.

This is not a luxury cruise with meals included. The boat may be full, the schedule is shared, and the stops follow a fixed timetable. Still, the combination of geology, swimming, island views, and free time is hard to match at this price.

Who should book it, and who should skip it

I would recommend this trip to you if you want an active day, enjoy learning how places were formed, and like mixing organized sightseeing with a little freedom. Families with older children may enjoy it, but children must stay with an adult, and the walking can be tiring.

You should be comfortable with uneven ground, stairs, sun, and getting into open water. The tour is not wheelchair accessible and is not recommended for people with walking disabilities or anyone using a wheelchair or stroller. Infant seats are not available.

Skip it if you want a polished beach day, a private boat, or a long hot-spring soak. The volcanic water can be muddy and only warmish, and Thirassia requires planning if you want to reach Manolas.

For most able-bodied visitors, I think it is one of the better ways to spend a day in Santorini. The guides, boat views, volcano walk, and caldera return make it feel like more than a standard sightseeing cruise. Pack the right clothes, carry cash, and put your swimsuit on before leaving the harbor.

FAQ

How long does the Santorini volcano and Thirassia cruise last?

The activity lasts about six hours.

Where is the standard meeting point?

Meet at the Santo Star Office at Fira Old Port at 10:15 am. The scheduled departure is at 10:30 am.

Does the tour include hotel pickup?

Hotel pickup and drop-off are included only if you select that option. Pickup may be arranged at a nearby walking point if the vehicle cannot reach your hotel directly. With pickup selected, the cruise departs from Athinios Port at 9:45 am.

Is the volcano entrance fee included?

No. The Nea Kameni entrance fee is €5 and must be paid in cash.

Do I need to swim to reach the hot springs?

Yes. The hot-spring stop involves swimming from the boat toward the volcanic waters. Foam pool noodles are provided, but life jackets are issued only in an emergency.

Is food included?

No. Food is not included. You can buy drinks from the onboard bar, and you have free time on Thirassia to choose and pay for your own meal.

Is the cruise suitable for wheelchair users?

No. The activity is not wheelchair accessible and is not recommended for people with walking disabilities or those using wheelchairs or strollers. A moderate amount of walking on uneven ground is involved.