Santorini Caldera Cruise Tour (Volcano, Hot Springs, Thirassia)
Overview
Available languages
6 hours
Mobile ticket
Your journey begins based on your selection: with pickup from Athinios Port, or without pickup from the Old Port of Fira.
The first stop is the volcano, where you’ll have 1.5 hours to hike its rugged trails and explore its unique landscape. A 5€ entrance fee is required to access the volcano. Your tour escort will guide you along the paths, sharing fascinating stories about its history and eruptions. Wear sturdy shoes and bring water for this moderate hike, which rewards you with stunning panoramic views at the summit.
Next, sail to the hot springs at Palea Kameni. The boat will anchor 30-50 meters from the springs, requiring a swim to reach the warm, sulfur-rich waters. This activity is recommended only for strong swimmers due to the distance.
The final stop is Thirassia, where you can explore its charming villages, take in breathtaking views, or savor a delicious meal at a traditional taverna before returning to your starting port.
Additional Info
Travelers should have at least a moderate level of physical fitness
For the volcano tour, wear comfortable shoes, a sun hat, and bring water.
Dark swimsuits are recommended to avoid sulfur stains.
A minibar is available on board for water and snacks.
Bring sunscreen for sunny days or a light jacket if it’s windy.
Swimming in the hot springs is not recommended for pregnant individuals or those with heart issues or serious medical conditions.
What To Expect
Santorini Volcano
As your boat nears the volcanic island, its rugged cliffs and stark beauty set the stage for your adventure. Step ashore and begin a guided hike along volcanic trails as your tour escort shares the island’s fascinating geological history and stories of its eruptions. A 5€ entrance fee is required to access the volcano. Wear comfortable shoes, bring a sun hat, and carry water to stay hydrated during the hike. At the summit, enjoy sweeping views of the caldera and the Aegean Sea, surrounded by the raw power of nature. Steam vents and volcanic rock formations create a truly mesmerizing, otherworldly landscape. After taking in the views and captivating stories, return to the boat with unforgettable memories. Always follow your tour escort’s guidance for a safe and enjoyable experience.
Palea Kameni
The next stop is the island of Palea Kameni, home to the renowned hot springs nestled on its west side. Here, you’ll have 30 minutes to experience the rejuvenating thermal waters, celebrated for their rich volcanic minerals and therapeutic properties. The boat will anchor approximately 30-40 meters from the springs, and you’ll need to swim this distance to reach the warm, orange-hued waters. Surrounded by stunning volcanic landscapes, this is a rare opportunity to immerse yourself in nature’s healing embrace. Please note, this activity is best suited for comfortable swimmers, as the swim requires confidence and stamina. For those who venture into the waters, it’s a moment of pure relaxation and connection with Santorini’s unique volcanic energy. Afterward, return to the boat, refreshed and recharged, to continue your unforgettable journey.
Options
With pick up / drop off
Pick up included: With this option, the tour begins at Athinios Port. Pickup is available from designated locations near your hotel. Pickup included
Without pick up / drop off
Pick up excluded: With this option, the tour begins at the Old Port of Fira, accessible by cable car or a walk down the steps.
What‘s Included
Guided volcano hiking tour (with expert insights into its history and geology.)
Foam pool noodles for added support while swimming at the hot springs.
Pick up and Drop off included (if the "with pickup" option is selected)
Visit to the hot springs (for a unique swimming experience in sulfur-rich, warm waters.)
Tour escort (to guide and assist throughout the trip.)
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)
Volcano
Cable car ticket - per way, Santorini Volcano
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
Reviews
1,348 reviews
Total reviews and rating from Viator & Tripadvisor
Spiro and rest of the...
Kaitlin M,Jun 26, 2026
- Review from Viator
5.00Spiro and rest of the crew were great. Very good value for money. Would do it again. Very different than more relaxing catamaran cruises, this is a bit of an adventure.
Really good fun and varied day out
Voyager35067930699,Jun 26, 2026
- Review from Tripadvisor
5.00Pick up and drop off was easy. Guide was excellent throughout the day, crew were courteous and helpful. Activities were as described, all very relaxed and the right amount of time at each stop.
Excellent walk
ISABELA S,Jun 24, 2026
- Review from Viator
5.00Organized activity as described. It's worth it! The view of Caldeira is beautiful, the guide speaks English, French, Italian and Greek.
Caldera boat tour with sunset from open sea
shlomitr579,Jun 23, 2026
- Review from Tripadvisor
5.00The trip was very good.. the driver who picked us up was awesome.. the tour itself was interesting and fun with high level meal and good music everyone we met on the boat enjoyed very much as well
Nice boat ride and caldera visit.
Kevin R,Jun 16, 2026
- Review from Viator
4.00We got to see 3 different locations. The hike to the caldera was a decent hike. Wear good sneakers, no flip flops. The hot springs was mediocre, you need a dark colored swimsuit. If you have a light colored suit especially white, it will get sulfur stained. The last island we stopped at was nothing much. But the boat ride itself was beautiful. The best part was the caldera and the views of Santorini you get from the boat. So beautiful.
10 Experience
H6278SDjoang,Jun 16, 2026
- Review from Tripadvisor
5.00Perfect for spending a day full of pleasant moments. And our guide Spyros was very attentive, pleasant, and fun. 100% recommendable
Super ! Caldera Boat. The guide speaks 4 language
Aleksandra R,Jun 14, 2026
- Review from Viator
5.00Super ! A very knowledgeable and friendly guide and tour captain aboard the Caldera Boat. The guide speaks at least 4 languages fluently, which made communication easy and enjoyable throughout the trip. We were truly impressed by his professionalism and language skills. He was also extremely helpful in organizing transportation to the port, arranging a convenient pickup near our hotel, which made the entire experience smooth and stress-free. Everything was perfectly organized, and the boat itself was excellent. The whole excursion took place in a fantastic atmosphere and exceeded our expectations. We highly recommend this tour!
Recommend!
Shant K,Jun 12, 2026
- Review from Viator
5.00Very nice experience. The boat was nice and spacey. Great crew and service. Definitely recommend! A must see while in Santorini
We enjoyed the cruise...
Thomas L,Jun 11, 2026
- Review from Viator
3.00We enjoyed the cruise itself. We thought we were going to be on a catamaran but instead we were on a wood ship. The boat tour itself was very enjoyable. The staff on the boat were wonderful. Transportation was an issue. The bus had many stops and took a very long time. Going back the bus left without us and others from our ship. It turned around and picked us up. From what I observed I would ask to be put on the wood sail like boat vs the catamaran.
Scenic cruise and volcano trek
Mindy M,Jun 11, 2026
- Review from Viator
5.00Definitely an ambitious walk to top of volcano, however, plenty of scenic vistas along the way to enjoy or even end your walk at before heading back down. Enjoyed the information provided.
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