Full Day 3-Island Boat Cruise from Port of Kos

Three islands, dolphins, a swim in clear Aegean water, and lunch on board make this one of Kos’s best-value full-day outings. The route combines a quiet village stop in Vathi, a swim near Plati, and an hour on tiny Pserimos. The dolphin search near the fish farms can be a real highlight, though sightings are never guaranteed.

I like the relaxed mix of scenery and free time, and I like that the €36.28 price includes a proper Greek lunch rather than only the boat ride. The main catch is comfort: the boat can feel crowded, seats are fairly basic, and much of the day is spent in the sun. Arrive early if you want a shaded place.

Three islands and one very good reason to go

• Vathi on Kalymnos: Enter a natural fjord, then spend an hour walking the peaceful village, sampling orange juice and local sweets, or seeing old sponge warehouses.
• Dolphins near the fish farms: The fish attract wild dolphins, and the captain may adjust the route when sightings are reported.
• Plati swimming stop: Swim beside the boat in clear blue and turquoise water, then enjoy reasonably priced drinks during happy hour.
• Quiet Pserimos: Visit an island with only about 15 winter families, with time for the shallow beach, paths, cafés, or a taverna.
• Lunch included: Expect pork or chicken souvlaki with salad, tzatziki, and bread, plus a vegetarian plate with beans or dolmades.
• A relaxed boat atmosphere: Music, a bar, friendly crew, and a family-friendly setting make this a calmer choice than a dedicated party cruise.

What the €36.28 price really buys you

At $36.28 per person, this is an unusually inexpensive way to spend most of a day on the water. The price includes the boat, the three-stop route, swimming time, and lunch. You are not paying extra for transport between islands, and you do not have to plan ferries or work out separate visits to Kalymnos and Pserimos.

The value comes from the range of the day. You get a village on Kalymnos, a swim stop, a small island beach, and the chance to see dolphins. None of these parts is a full excursion on its own, but together they create an easy introduction to the islands around Kos.

Lunch is simple rather than restaurant-level dining, but it is more useful than a token snack. The standard plate has pork or chicken souvlaki, salad, tzatziki, and bread. A vegetarian option includes beans or dolmades with salad, tzatziki, and bread. The food is served efficiently to a large group, and the portions are generally enough for a day on the sea.

Drinks cost extra. Beer, soft drinks, bottled water, and cocktails are available at the bar. Prices reported on board include about €3.50 for a small can of beer and about €6 for a plastic cup of cocktail. The bar can be part of the fun, but bring cash because it is useful for drinks and purchases at the island stops.

Boarding at Kos Port and settling in

The cruise starts at 10:00 a.m. from the Port of Kos and returns to the same meeting point after about seven hours and 15 minutes. The group can reach up to 135 people, so this is not a small private sailing trip. Think of it as a social day cruise on a sizable excursion boat.

Your first practical job is choosing a seat. Seating is not reserved, and the boat can fill quickly. If shade matters to you, arrive early and claim a spot. Much of the route is exposed to the sun, and one person found the lack of flexibility between stops frustrating when shade became important later in the day.

The seating is functional rather than plush. Several parts of the boat may offer different views, but you should expect basic seating for a long day. I would bring a towel or light layer for comfort, sunscreen, and a hat secured to a bag or chair. Wind can easily take a loose hat into the sea.

Music plays during the cruise. It helps keep the long stretches between stops lively, but the volume may be too high for you if you prefer a quiet boat ride. A large group can also change the mood, making the boat feel louder and more crowded during busy summer dates.

Vathi: a fjord entrance into Kalymnos

The first stop is Vathi, a village on Kalymnos. The boat enters a striking natural fjord, with the valley gradually appearing between surrounding gulfs and caves. Keep your camera ready during the approach, since the entrance itself is one of the most memorable parts of the route.

You have one hour ashore. That is enough time to walk the peaceful streets, try a homemade orange juice, sample local sweets, or look at the sponge warehouses. Kalymnos is strongly tied to sponge fishing, and these old working spaces give the stop more character than a simple beach visit.

The hour goes quickly, so set a modest goal. You will not see all of Kalymnos in this time. I would focus on the village atmosphere, the fjord views, and a short look at the sponge trade rather than trying to cover too much ground.

Vathi is the best stop for a little local flavor. It also gives you a break from the boat early in the day. The drawback is that the visit is brief, and the tour does not provide a long guided walk or a detailed visit to the island beyond the village.

Dolphins, Plati, and the clearest water of the day

After Vathi, the boat passes nearby fish farms. Their smell attracts wild dolphins, and the crew watches for them. Sightings depend on nature, not a schedule, but dolphins have been seen jumping alongside the route, sometimes in good numbers.

This is one of the tour’s biggest attractions. The captain, Giannis, has even changed course after receiving news of dolphin sightings so everyone could get a better look. Keep your phone or camera close, but do not spend the entire crossing staring at a screen. Dolphins appear quickly and vanish just as fast.

The boat then heads toward Plati, a small islet near Kos. It anchors close to shore and shuts off the engines, creating a swimming stop in remarkably clear water. From the boat, you can see the sandy bottom through blue and turquoise water.

You can jump from the side or use a ladder. The jump is from a noticeable height, and the ladder descends vertically. If you are not confident with either option, you may prefer to stay on deck and enjoy the view. This is an important practical detail because the swimming stop is not designed like a shallow beach entry.

The stop lasts about an hour. On board, the bar moves into happy-hour mode, with cocktails and other drinks available at low prices compared with many excursion boats. The combination of swimming, music, and drinks gives this section a cheerful holiday feel without turning the whole cruise into a loud party boat.

Bring your own bottled water if you prefer to avoid buying drinks, since bottled water is not included. Snorkeling equipment is not listed as included, so do not assume gear will be provided. You can still see the sandy bottom in the clear water, but the exact swimming setup may not suit everyone.

Pserimos: one hour on a very small island

The final stop is Pserimos, a small island with only about 15 families during winter. Summer brings more activity, but it remains far quieter and less developed than Kos.

You get about an hour to explore. The shallow sandy beach is the easiest choice, especially if you want a gentle swim. You can also look for small paths or sit at a local café or taverna with a drink.

Pserimos is not a place packed with sights. Its appeal is the chance to slow down, see a small island community, and enjoy a simple beach setting. If you need museums, long walks, or a full afternoon of organized activities, this stop may feel thin.

That simplicity is also the point. The boat gives you enough time to get a feel for Pserimos without asking you to spend an entire day there. I would treat the hour as a quiet final stop, not as a major sightseeing visit.

Lunch, cocktails, and life on board

The barbecue lunch is served on the boat and includes souvlaki, salad, tzatziki, and bread. The standard meat choice is pork or chicken. Vegetarian diners can request beans or dolmades with the same salad, tzatziki, and bread.

The food is basic but generally well received. It is not a reason to book the cruise by itself, yet it adds real value to the low fare. You do not need to find a restaurant during the island stops, and you can eat without losing your limited time ashore.

There is a bar for alcoholic drinks, soft drinks, bottled water, and cocktails. The staff are described as friendly, helpful, and efficient, and the boat has clean toilets. Music continues through much of the day, adding energy during the longer crossings.

The social side works best if you enjoy being around other people. Families, couples, and groups can all fit in, and a four-year-old has been able to take part in the day. At the same time, smokers may be nearby, and a packed boat can make personal space limited. If you want silence, premium seating, or a private crew, choose a smaller sailing trip instead.

The time trade-off on a seven-hour cruise

The advertised duration is about seven hours and 15 minutes, but only three hours are set aside for the island and swimming stops. The remaining time is spent cruising between Kos, Kalymnos, Plati, and Pserimos.

That is not a flaw, but you should know what you are buying. This is a scenic boat day with short visits, not a deep exploration of three islands. The journeys can feel long, especially on the way to Vathi and on the final return to Kos.

The reward is variety. In one day, you see a fjord village, watch for dolphins, swim in open water, eat lunch at sea, and visit a tiny island beach. Planning the same route independently would take more effort and likely cost more once you add boat tickets and meals.

The limited time ashore also keeps the day moving. You will not get bored at one stop, but you will need to accept that each island visit is a sample. I see this as a good fit for a first visit to Kos or for anyone who wants a broad taste of the nearby islands.

Who should book this cruise

I would recommend it to you if you want:

• A low-cost full day on the Aegean
• Several different stops without arranging your own transport
• A chance to see wild dolphins
• Clear water for swimming
• A Greek lunch included in the fare
• A friendly, family-friendly boat with music and a bar
• A relaxed alternative to a dedicated party cruise

Families can make good use of the varied program, although young children should be watched carefully around the boat and swimming area. You should also be comfortable with sun, wind, stairs, a large group, and basic seating.

This is less suitable if you dislike crowds, loud music, smoking nearby, or spending long periods seated. It is also not ideal if you need an easy beach entry, since the Plati swim uses a jump or a vertical ladder. The limited time at Vathi and Pserimos may disappoint you if you want serious sightseeing.

The tour operates in English, accepts mobile tickets, allows service animals, and is near public transportation. Most people can participate. Weather matters, and poor conditions can lead to a different date or a full refund. You can cancel for a full refund up to 24 hours before the 10:00 a.m. start time. Cancellations or changes inside that window are not accepted.

Should you book the Odyssey Boat Cruise?

Book it if you want a lot of scenery and activity for a modest price, and you are happy to trade comfort and long island visits for convenience. The dolphin sightings, Vathi fjord, Plati swim, and included lunch give the day genuine variety.

Skip it if you want a quiet luxury cruise or the freedom to choose your own beaches and restaurants. For most visitors based in Kos, though, this is a strong-value day out. Arrive early for shade, carry sunscreen and cash, secure your hat, and treat each stop as a short taste rather than a complete island tour.

FAQ

Where does the three-island cruise start and finish?

It starts at the Port of Kos, Kos 853 00, Greece, at 10:00 a.m. The cruise returns to the same meeting point.

How long does the cruise last?

The activity lasts approximately seven hours and 15 minutes.

Which islands and stops are included?

The route includes Vathi on Kalymnos, a swimming stop near Plati islet, and Pserimos. The boat also passes fish farms where dolphins may be seen.

Is lunch included?

Yes. Lunch includes pork or chicken souvlaki, salad, tzatziki, and bread. A vegetarian option includes beans or dolmades, salad, tzatziki, and bread.

Are drinks included?

No. Alcoholic drinks, soft drinks, and bottled water are available to purchase on the boat.

What happens if the weather is poor?

The activity requires good weather. If it is canceled because of poor weather, you can choose a different date or receive a full refund.