Santorini Caldera Cruise: Nea Kameni and Thirasia Tour

Embark on a thrilling half-day tour of Santorini’s flooded crater, Nea Kameni and Thirasia islands. Sail across the stunning caldera, explore volcanic craters, swim in warm springs, and enjoy a leisurely lunch on Thirasia island.

Duration: 6 hours
Cancellation: 24 hours
Highlights
  • Santorini Volcano - As the boat approaches the volcanic island, the rugged cliffs and striking beauty create the perfect backdrop for an exciting adventure. Upon arrival, embark on a guided hike along volcanic trails while the tour guide shares intriguing geological history and tales of the island’s eruptions.
    A 5€ entrance fee is required to…
What's Included
  • Visit of the famous volcano of Santorini
  • Foam pool noodles
  • Visit and swim at the Hot Springs
  • Boat tour
  • Tour Guide
  • Pick up / Drop off included (if option is selected)
  • Visit Thirassia Island
What's Not Included
  • Food and beverages (available for purchase or bring your own)
  • Towels and swimwear (guests must bring their own)
  • Pick up and Drop off excluded (if the “without pickup” option is selected)
  • Entrance fees
  • Cable car ticket - per way, Santorini Volcano
Additional Information

Begin your adventure with a choice: either with a pickup from Athinios Port or without from the Old Port of Fira.
The first destination is the volcano, where you will have 1.5 hours to hike its rugged trails and discover its unique landscape. A 5€ entrance fee is required to access the volcano. Your tour guide will lead you along the paths, sharing…

Location
Santo Star Travel - Old Port of Fira
If you choose the "without pickup option," the tour starts at the Old Port of Fira, accessible by cable car (10€ per way) or a 30-minute walk down the steps. The meeting point is at the "Santo Star" office. Please arrive 45 minutes before departure. Cable car users should plan for queues.
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Customer Ratings
4.4
(1317 Ratings)
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Risha_s
Apr 28, 2026
Very nice service. Staff... - Very nice service. Staff is punctual, friendly and have good knowledge about the places and its history. Staff fluently speaks English and give very clear instructions. They give sufficient time to explore the places and even take pictures.
Review provided by Viator
L4635wbnadiah
Apr 28, 2026
Loved it - Amazing value for money staff was super friendly and knowledgeable! It was a decent amount of time spent on each excursion, didn't feel rushed to just get to the next thing ( roughly 7 hours spent on everything). The hot springs swim was definitely my favourite part , the volcano was a magnificent sight! . The pick up and drop off service was very worth it too as the port is quite difficult to get to. 100% worth it , an amazing experience that you didn't have to break the bank for.
Review provided by Tripadvisor
Veronique_g
Apr 22, 2026
Full cruise of discovery of the islands of Santorini - This cruise tour allows you to visit the island of Nea Kameni with the volcano crater , then the island of Palea kameni with swimming in the hot springs, and finally meals on the island of Therasia. The boat is nice and pretty. Nice mood music. Good mood. Staff who speak French and visit in French. Interesting ascent and visit of the crater even if you have to pay 5 euros more. Jump off the boat and swim in the hot springs (not that hot in April ) after 100 meters of swimming in the sea waters (not very clean there). Stop on Therasia with a beautiful view. Captain John restaurant advised by crew members not great. Better go to another restaurant. Return to Thira along Oia and the coast. Superb view. Nice experience with a good atmosphere.
Review provided by Viator
Supriya_p
Apr 21, 2026
Good experience - The entire experience was well planned. The guide provided good information. Overall it was good experience. Will recommend it.
Review provided by Viator
Anthony_d
Apr 14, 2026
Great Boat Ride - We really enjoyed this experience! The only suggestion I would sayis to get the vehicle color and license when being picked up at the hotel and confirm if the service will be pickup and drop off. Other than that, the tour itself was a really great experience! Be prepared to do a lot of walking with good walking shoes and you should also be a seasoned swimmer. You will have to jump off the boat into the hot springs. The sites were beautiful and the time in Thrissa was fun. It was an overall great experience!!!! The crew was very nice, funny and accommodating!
Review provided by Viator
Carlosdaniel_s
Apr 4, 2026
Recommended - Really complete and nice tour its really good for what you pay for, tons of sightseeing and friendly staff!!!
Review provided by Viator
Sushma_l
Apr 15, 2026
Must do tour - Lovely experience, great guide & very informative about the Volcano. Reason I am giving 4 Star, no fault of them however, weather was too cool to enjoy the sulpher Springs.
Review provided by Viator
Traveler50413619150
Apr 8, 2026
Exceptional tour guide and driver - A “must see” when visiting Santorini. Costas certainly knows his way around!!!
Review provided by Tripadvisor
Isha_s
Apr 8, 2026
Well planned - correct... - Well planned - correct amount of time at each place. Boat was clean and had plenty of seating. Bit of a swim to get to the hot springs but pool noodles provided. Could have done a bit more of a guided tour of Thirassia / the volcano, but great regardless. Glass floor of boat needed to be cleaned to allow to see the coral reef.
Review provided by Viator
Andrew_c
Apr 5, 2026
Not as described - This excursion is not as described. First, the boat tour is not on a small historic wooden ship as pictured in the tour photos, but instead on a 250 person ferry that was about as crowded as a NYC subway during rush hour. This was a huge disappointment. Next, the “private guide” for the volcano hike was not so private. There was one guide for 250 people and most passengers were unable to experience the tour. Next, the hot springs were a swim off the back of the boat and were not hot (only about 70 degrees Fahrenheit).
Review provided by Viator
From $41
up to 15 guests
1 - Adult
Cancellation: Free cancellation up to 24 hours before the start of your experience (local time).