Santorini Tour of Caldera with Glass bottom Boat

Santorini, Greece

High interest

Booked 4 times today.

5 hours 30 minutes (approx.)
Offered in: English

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Santorini, Greece

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Santorini Volcano and Hot Springs Cruise Tour from Fira Old Port

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Overview

A caldera cruise is a must when in Santorini. See more of the volcano, including some extraordinary underwater rock formations, when you book this glass-bottom boat adventure. Visit Santorini Volcano, the Santorini Hot Springs, and beautiful Thirasia (Therasia) with free time to swim or eat lunch. The glass bottom and swimming noodles make this tour perfect for families with kids, but do bring cash to buy your volcano ticket.

Visit all three major islands of the Santorini caldera in one trip
See the seabed and maybe some marine life too without getting your face wet
A guide leads the way on Santorini Volcano so you don’t miss a thing
Your comfortable boat has an onboard restroom for complete peace of mind

What's Included

Local guide
Swimming Noodles
Restroom on board
Air-conditioned vehicle

Lunch
Entrance ticket to Volcano

€5.00 per person
Snacks
Transfer

Meeting and Pickup

Meeting point

Santorini Excursions - Dakoutros Bros J.V.
Fira Old Port, Santorini 847 00, Greece
Santorini Excursions metting point is located next to cable car station at the old port of Fira. Tour leader will wait for you

End point

This activity ends back at the meeting point.

Start time
.10:45 am

Itinerary

Santorini Volcano

2 hours • Admission Ticket Not Included

Hot Springs

30 minutes • Admission Ticket Free

Thirassia

2 hours • Admission Ticket Free

Views of Santorini and Caldera (Pass By)

Additional Info

Confirmation will be received at time of booking
Not wheelchair accessible
Stroller accessible
Service animals allowed

Infant seats available
No heart problems or other serious medical conditions
Most travelers can participate
This tour/activity will have a maximum of 70 travelers

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Cancellation Policy

You can cancel up to 24 hours in advance of the experience for a full refund.

Traveler Photos

Gallery picture 1 (from a traveler's review)

Gallery picture 2 (from a traveler's review)

Gallery picture 3 (from a traveler's review)

Gallery picture 4 (from a traveler's review)

Gallery picture 5 (from a traveler's review)

Reviews

4.0

based on 8 reviews

Total reviews and rating from Viator & Tripadvisor

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Great adventure, 100% worth it!

Rebekka_T, Jul 2026

Best boat trip we have done so far. Lots of shade at the upper deck and the lower deck is great as well with the „pirate of the Caribbean“soundtrack while watching the cliffs and fishes next to Thirasia. Very nice helpful crew. Remember to Bring good shoes. The walk to the Vulcano is with lots of pebbles and some slippery parts to walk on. Have a small backpack to bring water up the vulcano as it’s quiet hot up there. (Bring it with you or buy cold water, ice tea or Softdrinks at the boat) Love the tour. All in all perfect. My kids enjoyed it a lot. Enjoy!

Response from Host, Jul 2026

We’re thrilled you enjoyed the tour! Your review means a lot to us.

Very nice tour and friendly staff, amazingly beautiful views

Nicholas_K, Jun 2025

Very nice boat tourthe staff is very friendly and helpful, describing the various points very nicely, and very clear about meeting points and times at each of the 4 stops. The views from the upper deck are magnificent, islands, boats, the beautiful white Santorini houses look magnificent. The swimming is very nice. The lower deck has glass bottom to see the water that really shows the boat speed and the depth of the water and sea floor at the stop where the water is crystal clear. Snorkeling at Thirasia at the stop place near the restaurant is very beautiful, crystal clear waters, saw hundreds of fish (must bring swimming goggles and swim shoes because there are small rocks instead of sand). Saw white fish (larger, maybe 10 inch long, some 2 inch) with gray lines or gray dots grazing on the rocks, smaller orange and black fish (4 inch), small green fish (4 inch), long pencil like fish (25 inch long, 1cm wide) that stay very still then start wiggling and swim a little then stand very still, it was a very nice surprise to see, all fish within 10 meters of the restaurant's wall where the water is less cold and less deep. The meeting point for the boat tour is at the Old Port, not accessible by car, only by cable car (10 euros each way), by donkey (6 euro each way) or by hundreds of stairs between the cliff top and the sea level (easy steps, small, not tall steps). The views of all islands, especially of the Santorini cliffs and white buildings are absolutely spectacular. We took the day boat tour, not the evening tour, and it was 5 hour and a half.

Nice experience

Giusi_G, Aug 2026

Very beautiful experience even if the stops were a bit short, but you manage to take a nice tour... volcano hot spring and Thirasia... I recommend it

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Response from Host, Aug 2026

We really appreciate your feedback and are glad you had a great experience.

We love the experience.

Ronaldo_B, Jul 2026

Excellent, super recommended. Excellent experience in seeing the active volcano. Do not expect the thermal waters to be hot, but only slightly less cold. Lunch in Thirassia, able to swim from the sea was an excellent and happy surprise.

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