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Boat Tours in Santorini

Volcano Tours

Santorini Volcano Boat Tour including Hot Springs & Therasia

6 hours
English, Italian, French and Greek speaking tour guide
Free cancellation Up to 100% refund according to the cancellation policy
Departure point Old Port or Athinios port
Departure timeDeparture at 10:30, Arrival at 16:30
Meeting info If you select option with transfer, there are pre-defined pick-up/drop-off locations, chosen at convenient central spots in most villages. You will be advised after the booking, a pickup location that is closest or most convenient for you!

Sail across Santorini’s beautiful Caldera and visit the islands of Nea Kammeni and Therasia on this 6-hour cruise. Board a sightseeing boat at the old port and admire Santorini’s cliffs as you cruise to Nea Kammeni. Enjoy free time to walk around its volcanic crater, swim in the warm springs and visit Therasia island. Explore and have lunch there at leisure before cruising back to Santorini. Then explore Oia village and experience a unique sunset.


The excursion starts from the picturesque old port of Santorini. This port is only accessible by cable car, which is the most common way as it takes only 3 minutes to go down, or you have to descend 587 steps on foot. Important note: You have to pay 6€ more per way for the cable car ticket. Gialos, the Old Port, lies below Fira, nestled at the foot of a rocky cliff. You will be surprised with the steep slopes of the Caldera and, finally, the tiny port will appear under these huge rocks and the cave houses that seem to dangle on the cliff. There, the guides of your excursion will be waiting for you, to give you all the important information and to orientate you on the boat. For more information or clarifications, don’t hesitate to visit our travel agency which is located down at the port.


Our first destination will be the famous volcano of Santorini! After sailing for 20 minutes, we will reach Nea Kammeni’s jetty. Should you be interested to be guided at the volcano, you have to pay 5 euro per person as an entrance fee. Then, you will walk to the volcano’s ridge with your guide who is going to explain to you everything about the history and the geology of the volcano. You will stay at the volcanic island for 1.5 hour and after that you will embark again for the next stop.

Hot Springs

Our next stop will be the island of Palaia Kammeni, where the famous hot springs are located on the west side, a place that is really popular for its thermal waters. We will stop there for 30 minutes, at a distance of 30 meters from the shallow waters of Agios Nicholaos Beach. The waters are full of sulfur, iron and other metals coming from the volcano and they are very good for the skin, rheumatism, arthritis and other physical pains.
Important Note: In order to reach Agios Nicholaos Beach, it is essential to swim extremely well.

Therasia or Thirassia

Next stop is the island of Therasia. Therasia is a miniature of what Santorini used to be several years ago. Today it is a virgin island, still untouched by tourism and modern life style. The island of Therasia is only 9 sq. km in size and has approximately 300 permanent inhabitants. We will stay there for 2 hours, so as to explore this picturesque and traditional village as well as to taste the authentic Santorinian cuisine. Should you wish so, you can also walk around the main village of Manolas, which is the capital of Therasia. The view of Santorini is spectacular from there.


After departing from your last destination, the tour will finish at the old port of Fira. After your disembarkation, in case you have a transfer service, you will be guided to our bus in order to drive you back to your destination. Otherwise, you are free to take your own transport

What you will see/visit
Booking options
Select Date
Select Participants
Tour Details
COVID-19 Safety measures
The health and safety of all passengers are our highest priority so the tour operator is implementing the following measures:
Passengers will be encouraged to bring their own snorkeling equipment, if they would like.
There will be fewer passengers on each boat in order to maintain a safe distance between them.
  • English, Italian, French and Greek speaking tour guide
  • All taxes
What to bring
  • Swimsuit (dark colors are recommendable)
  • Towel
  • Sun hat
  • Comfortable shoes
  • Gratuities (optional)
  • Cable Car fee: 6€ /per person
  • Volcano entrance fee: 5€ /per person
Additional info
  • Children of the age group 5 to 12 years old will be charged half ticket
  • Subject to favorable weather conditions. If canceled due to poor weather, you will be given the option of an alternative date or full refund
  • A moderate amount of walking is involved
Reviews by real customers
Excellent based on 210 reviews
Hinal T. United Kingdom, 27 Sep 2021

This was one of the best things we did during our week in Santorini and it is very good value for money compared to other activities. We were not one of the first ones in the queue at the old port, so we didn't get the best seats on the top deck (access via a ladder) but the boat was beautiful and we had a very good view looking behind the boat. The views of the Caldera on this tour are absolutely stunning. Volcano: You spend a good amount of time at the volcano and the tour guide was very knowledgeable and able to explain everything in English, French and Italian! Hot Springs: Unless you're one of the first to get off the boat and the last to return, the swim at the hot springs is very short. We saw another boat providing swimming noodles, which would have made the swim from to boat tot he spring quicker and easier! Therasia: Stunning island, but again, more time would have allowed us to appreciate it properly: it's fine if all you do is have lunch at one of the restaurants next to the port, but if you do the steep hike up to Manolas, and have lunch at the first restaurant you see (Panorama Resto - fantastic restaurant, by the way), then you will need to run back down to catch the boat on time to go home!! If you are feeling energetic then definitely still do this hike - the view of the Caldera and the port of Therasia is stunning from the top. Overall a wonderful experience, just wish we had more time.

Mohammed A. Saudi Arabia, 25 Sep 2021
Tracy W. United Kingdom, 25 Sep 2021
Volcano Boat Tour inc Hot Springs & Therasia

Well organised, six hour boat tour on wooden sailing type boat. Good commentary from one of the crew about the surroundings and the right time we felt spent at each location. Excellent value, couldnt beat it for a day out

Paulina R. Lithuania, 24 Sep 2021
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Good to Know

Fill & Print
COVID-19 Form

As part of the COVID-19 guidelines announced by the Greek Authorities for the prevention of the new coronavirus transmission and spread, all passengers must have completed the Pre Boarding Information Form (Download) and submit it to the vessel's Chief Purser along with their voucher/ticket, when boarding, prior to the vessel's departure.
If you have not access to a printer, please contact us as early as possible.


Once your booking is complete, you will receive the voucher, which includes the meeting point, time and supplier’s contact information, at your email address. You need to print it (2 copies) and have it with you. If you do not have access to a printer and the meeting point is at the Old Port, then you can pick it up from Caderas Boats’ office "Star Travel" in Old Port free of charge, half an hour before departure. If you have chosen a tour with pickup service and hence you cannot print it, please let us know at least 8 hours in advance so that we can get it ready for you.


If you cancel at least 3 day(s) in advance of the scheduled date, there is no cancellation fee. If you cancel within 3 day(s) of the scheduled date, there is a 100 percent cancellation fee.

Passport or Id

Full names of the passengers (as shown on their passport or id). Passengers need to have on board with them their passport or id or a copy of them in case the Port Authority runs a check on the boat, a picture on their mobile will suffice.

Gift coupon

Once your booking is complete, you'll receive a confirmation email which will include the 10% off coupon code to use it on bus tours.

Frequently Asked Questions

Yes, you will hike up to the crater. The hike is about 90 minutes.

It is not difficult. You will walk a path for 45 minutes to reach the crater and then another 45 minutes to return to the boat.

Yes, it is. But do not forget to bring a hat, sunscreen and comfortable shoes with you.

Yes, you can. There is no extra charge, but you will have to carry it in your arms as the path is not suitable for strollers.

Yes, you can take part but you will not able to swim in the hot springs. Instead, on this part of the tour, you will stay on the boat (relax & sunbathe).

Lifejackets are only for an emergency. The crew will provide you with swimming noodles to help you swim. Lifejackets for swimming are only available in some catamaran cruises. Contact us for more info.

Yes, you can. But it will be on your own responsibility as there is no space to store it on the boat.

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