Corinth Canal & Saronic Gulf cruise with swim and buffet

Sail through an 80-meter canyon, then swim in clear water off the boat

A 4-hour cruise from Isthmia port aboard the Agios Andreas, a 17-meter glass-bottom vessel, takes you through the Corinth Canal's narrow passage between vertical rock walls, then into the Saronic Gulf to Siderona beach for a swim. The boat carries up to 50 guests; a live English-speaking guide narrates the route; buffet with food and wine, snorkeling gear, and swimming aids are included.

Step-by-step itinerary

Corinth Canal cruise and swim

• Board the Agios Andreas at Isthmia port
• Cruise through the Corinth Canal
• Sail past ancient port of Kenchreai
• Pass by Baths of Helen of Troy
• Swim at Siderona beach
• Enjoy buffet with food and wine
• Return to Isthmia port

The experience

The route starts at Isthmia port and heads straight into the Corinth Canal, where the ship passes between rock walls rising 80 meters on either side. This engineering feat, completed in the late 19th century, still connects the Saronic Gulf to the Corinthian Gulf, and the narrow passage offers views most travelers never get from land. As the boat moves through, you'll see why this canal has shaped Mediterranean shipping for over a century.

After the canal, the cruise sails into the Saronic Gulf and passes the ancient port of Kenchreai, where Apostle Paul disembarked and taught Christianity to the Greeks. The route then continues toward the Baths of Helen of Troy, an area tied to the myths of the Trojan War, before reaching Siderona beach. Here the boat stops close to shore so you can dive straight into the water for a swim. Snorkeling equipment and swimming aids are on board. If you'd rather stay dry, the glass bottom lets you watch the marine life and seabed without getting wet.

Once everyone's back on board, a buffet with food and wine is served while the boat heads back to Isthmia port as the sun sets. Bottled water is provided throughout, and a live English-speaking guide accompanies the full journey. Hotel pickup is available on request.

What’s included

• Individual buffet with food and wine.
• snorkeling equipment and swimming aids.
• use of the glass-bottom viewing area.
• bottled water throughout the cruise.
• live English-speaking guide.
• hotel pickup on request.

Before you book

Days and timesNext departure: 21 Mar 2027

Book up to2h before

AgesAdult (13 to 80 years) · Child (4 to 12 years) · Under 4: can't be included in the booking

GroupUp to 45

Live guideEnglish

Audio guideEnglish, French, German and Italian

Meeting point and pickupHotel pickup is optional; you can also go straight to the meeting point. Ends back at the starting point.You can choose from 3 pickup points.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.It may be canceled due to bad weather or if the minimum number of travelers isn't reached. If that happens, you're offered another date or a refund.

Prices and times updated yesterday

Good to know

Easy physical levelPets welcomePublic transport nearbyInfants must sit on laps

Operated by St. Andreas - Glass Bottom Corinth Canal Cruises

Is this one for you?Book this if you want a guided boat tour on a set schedule departing from Isthmia port. Choose it over self-guided options if you'd rather have a captain navigate the Corinth Canal passage and plan your stops.

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Top questions

Can children come?

Yes. Ticket types: Child (4 to 12 years). Under 4: they can't be included in the booking.

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24 h before the start.

What is the Corinth Canal and why does it matter?

The Corinth Canal is a waterway completed in the late 19th century that connects the Saronic Gulf to the Corinthian Gulf, cutting through rock walls up to 80 meters high. It's an engineering landmark that still handles Mediterranean shipping today and offers a rare view from water level as the boat passes through the narrow passage.

Can I swim during the cruise, and what's the water like?

Yes, the boat stops at Siderona beach where you can dive into the water straight from the boat. The water is clear enough to snorkel or simply swim. Snorkeling equipment and swimming aids are provided on board, and you can also view the underwater life through the glass bottom without entering the water.

What's included in the buffet, and is there a choice for dietary needs?

An individual buffet with food and wine is served on board during the return journey. Bottled water is also provided throughout the cruise. Dietary restrictions or preferences are not detailed in the operator's information, so contact them directly if you have specific needs.

How many people travel on this cruise, and is it crowded?

The Agios Andreas holds up to 50 guests, so the boat is shared with other travelers rather than private. A live English-speaking guide leads the route and narrates the stops for the whole group.

Do I need to arrange my own transport to the port, or is pickup included?

Hotel pickup is available on request, so you can arrange transport as part of your booking. Public transportation options are also available near Isthmia port if you prefer to make your own way there.