From the Port of Kos: Full Day Boat Cruise to 3 Islands

The best part of this three-island cruise is its easy mix of scenery, swimming, and time ashore. You sail from Kos to Kalymnos, stop in the fjord village of Vathi, swim from the boat at Plati, then spend time on Pserimos. It feels like a full Greek island day without the fuss of changing boats.

I like the friendly Odyssey crew, led by Captain Yanas, and the strong value at $35 per person. Lunch is included, vegetarian food is available, and drinks are sold at reasonable prices. The main thing to consider is that this is a popular boat trip, so seating can feel tight at busy times, and rough wind may force the captain to change a swim stop.

Key points to know before you book

• Vathi on Kalymnos: Spend about an hour near a natural fjord, with steep cliffs, coves, caves, and quiet village streets.
• Swimming from the boat: Plati brings clear turquoise water and a chance to jump straight from the deck.
• Pserimos stop: You get time to walk around the island, swim, and see a smaller, slower side of the Dodecanese.
• Lunch included: The buffet offers pork or chicken souvlaki, salad, tzatziki, and bread, with beans and dolmades for vegetarians.
• Dolphin spotting: The boat passes fish farms, where wild dolphins are sometimes seen close to the vessel.
• Practical limits: Drinks, towels, and hotel transfers cost extra, and you should arrive at the blue Odyssey boat by 9:30 a.m.

A full day from Kos, with the sea doing most of the work

This is a long day, listed at 450 minutes, or about seven and a half hours. That sounds like a lot when you first read it, but the day is broken into short sailing stretches, time on two islands, and swimming pauses that give the schedule a good rhythm.

I would choose this trip for a relaxed day outdoors rather than for serious sightseeing. You will not get a deep tour of Kalymnos or Pserimos. Instead, you get a taste of three different settings: a green fjord on Kalymnos, open water around Plati, and a small island harbor on Pserimos.

The blue Odyssey boat leaves from the harbor of Kos, opposite the Port Police. You need to find the boat yourself and be aboard by 9:30 a.m. Bring a hat, swimsuit, towel, sunscreen, and some cash. The boat sells drinks, but drinks are not part of the $35 price.

The music is generally soft enough for a calm day at sea, though one passenger would have preferred older Greek music. If you want a loud party boat, this is probably not your match. If you want conversation, sea views, and a few songs in the background, the mood should suit you better.

The first sail to Kalymnos and Vathi

The first sailing stretch takes about an hour. It gives you time to settle into your seat, look back toward Kos, and watch the Dodecanese islands come into view. The captain and crew provide information in English and keep an eye on passengers throughout the day.

Your first stop is Vathi, a village on Kalymnos. The approach is the visual high point of the morning. The boat enters a natural fjord surrounded by rugged cliffs, gulfs, coves, and caves. You get the kind of view that makes the early start worthwhile, so keep your camera ready before the boat reaches the village.

You have about an hour to explore. That is enough time to walk the peaceful streets, take photographs, and try a local specialty if you wish. It is not enough for a long walk inland, a museum visit, or a full look at Kalymnos. I see that as a fair trade: the tour gives you a pleasant introduction rather than pretending to show you the entire island.

Vathi feels different from the beach resorts on Kos. Its appeal is the setting and the quiet pace. You can stretch your legs after the first sail, see local life around the harbor, and enjoy the view from land before returning to the boat.

One practical point: the exact time at Vathi can vary. If the captain makes a detour to watch dolphins, you may receive less time at the first stop. That happened on one outing, with about 30 minutes available at Vathi instead of an hour. The dolphin sighting made the change worthwhile, but you should not expect every stop to follow the clock perfectly.

Greek lunch on deck after the morning stop

After Kalymnos, the boat sails for about 45 minutes before lunch. The included meal is simple, filling Greek fare rather than a formal restaurant spread. The usual plate includes pork or chicken souvlaki, salad, tzatziki, and bread.

Vegetarians receive beans and dolmades instead of meat. Vegetarian passengers found the alternative generous and tasty, and it can also suit vegans if you skip the tzatziki. If you have a particular dietary need, speak with the crew early in the day so they can prepare the right plate.

The food is one of the reasons this trip offers good value. At $35, the price covers the boat, island stops, swimming, and lunch. You still pay for drinks, but the onboard bar is considered reasonably priced. Cocktails have been sold for around €6, and a bottle of water has been available for about €1 during happy hour, though prices can change.

I would not book this for gourmet dining. The meal is best understood as a hearty break in the middle of a hot day. It saves you from finding lunch on an island, and the deck setting makes the meal part of the outing.

Fish farms, flying fish, and the chance of dolphins

After lunch, the boat passes nearby fish farms. This is your best chance to watch for wild dolphins. Sightings are not guaranteed, but several outings have included dolphins close to the boat, sometimes in groups. Flying fish have also been spotted.

The crew may slow down or make another turn if dolphins appear. That can be exciting, but it can also shift the schedule. I would treat dolphins as a bonus, not as the central reason to book. The islands and swimming stops remain the dependable parts of the day.

Keep your phone or camera ready, but do not spend the entire sail staring at the water. Dolphins can surface quickly and disappear just as fast. The fish farms also give you something interesting to look at during what could otherwise be a plain transfer between stops.

Plati, where the boat becomes the beach

The next stop is Plati, a small islet reached after about 20 minutes of sailing from the fish farms. This is a swimming stop rather than a long shore visit. The boat anchors in clear turquoise water, and you can jump from the boat and swim around it.

For many people, this is the most memorable part of the day. There is no need to search for a beach or carry your things across the island. You simply change into your swimsuit, climb down or jump from the boat, and enjoy the water.

The swimming stop also helps break up the sightseeing. After the warm walk around Vathi and the lunch service, the sea gives you a chance to cool off. Families have enjoyed it, though you should supervise children closely around the boat and water.

Wind matters here. On one occasion, the boat could not dock at Plati because conditions were too rough. The crew made up for it with an additional swimming stop near Pserimos. That is a sensible safety choice, but it means you should see the advertised stops as a planned route rather than an absolute promise.

The onboard bar usually offers a happy hour around the swimming period. You can buy cocktails and other drinks while listening to music or sitting in the sun. Bring sunscreen and a hat because the deck offers plenty of exposure, and the sea breeze can make the heat feel less intense than it really is.

Pserimos offers an hour at a smaller island

After roughly 20 minutes of sailing from Plati, you reach Pserimos. The island gives you about an hour to walk around at your own pace, take photographs, swim, or stop for a drink.

Pserimos is a good final island because it lets you end the day on land. You can wander instead of following a formal guide, then return to the boat when instructed. The pace is unhurried, but an hour still passes quickly. I would use it for a short walk, a look around the harbor area, and a swim rather than trying to cover the whole island.

Take cash for Pserimos. Some restaurants and businesses on the island may not accept cards. You do not need to spend money there, but a few euros give you more freedom if you want a drink, snack, or small souvenir.

The route sometimes describes more than one swimming opportunity around the final stop. Wind and sea conditions decide what the captain can safely do. The crew has substituted another bay when Plati was not possible, so flexibility is part of the experience.

What the boat day feels like in practice

The Odyssey is described as comfortable, with enough space for a pleasant day at sea. Still, this is a shared boat, not a private charter. On a busy departure, seating may feel crowded, with more than one person sharing a space intended for fewer passengers.

Arrive early if you care about where you sit. The boat can be busy, and getting a good spot makes a difference during the long sailing sections. The front may offer the best view, but it can also be wetter when the sea is choppy. A seat farther back may be more practical if you want a drier ride.

Sea conditions are worth taking seriously. One passenger needed seasickness medicine from the crew, and another found the front of the boat too wet in rough water. If you are prone to motion sickness, take sensible precautions and ask the crew for help if needed.

The crew receives the strongest praise. Captain Yanas is described as friendly, humorous, and informative, while the wider team is attentive with food, drinks, swimming, and passenger safety. The service sounds warm without turning the trip into a nonstop performance.

The music is part of the atmosphere. It is not presented as a wild party soundtrack, though preferences differ. Some people will enjoy the relaxed playlist, while others may want more traditional Greek music.

Why the $35 price works well

At $35 per person, this is one of the easier boat trips to justify if you want a full day on the water. The fare includes transport between three islands, the Kalymnos and Pserimos stops, swimming time, and lunch with a vegetarian option.

A similar day assembled independently would require separate boat arrangements, food, and drinks. You also would not have the same chance to watch dolphins from a boat passing the fish farms. The low price does come with tradeoffs: you share the boat, the schedule is fixed, drinks cost extra, and the island visits are short.

The best value comes if you use the whole day. If you plan to remain on the boat for only one swim and dislike group excursions, you may prefer a smaller private trip. If you want several highlights for a modest price, this outing delivers a lot.

Free cancellation up to 24 hours before departure and reserve-now, pay-later booking make it easier to fit into a changing Kos schedule. The activity is advertised in English. Accessibility information is mixed: it is described as wheelchair accessible, but it is also marked as unsuitable for people with mobility impairments. Contact the provider before booking if you need step-free or assisted access.

Who should book this Kos cruise

I would recommend it to couples, families, and solo visitors who want a simple day of island scenery and swimming. It suits you especially well if you like variety: a village walk, a Greek lunch, dolphin spotting, a boat swim, and another island stop all fit into one day.

Children can enjoy the clear water and jumping from the boat, but you should pack extra sunscreen and hats for them. The heat, sun, and long time outdoors are real parts of the day.

This is less suitable if you need long, quiet time at each island. You get about an hour at Vathi and Pserimos, not half a day. It is also not the right pick if you want a private guide, a detailed cultural tour, or guaranteed dolphin sightings.

Should you book the Odyssey three-island cruise?

Yes, if you want excellent value, friendly service, and a relaxed way to see several islands from Kos. The fjord at Vathi, the clear water at Plati, the small-island feel of Pserimos, and the included lunch give the day plenty of variety.

Book with a little flexibility. Wind may change the swimming route, dolphins may alter the timing, and the shared boat can feel busy. Arrive by 9:30 a.m., bring a towel and cash, choose your seat early, and keep your expectations focused on a fun island-hopping day rather than a detailed island tour.

FAQ

How long does the boat cruise last?

The cruise lasts 450 minutes, or about seven and a half hours. The day includes sailing, island visits, lunch, and swimming stops.

Where does the boat leave from?

The blue boat named Odyssey leaves from the harbor of Kos, opposite the Port Police. You should be on board by 9:30 a.m. to check your ticket.

Which islands does the cruise visit?

The route visits Kalymnos, Plati, and Pserimos. The Kalymnos stop is at Vathi village.

Is lunch included?

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

Are drinks included in the price?

No. Drinks are available to purchase onboard, including cocktails and water.

Do I need to bring a towel?

Yes. Towels are not included. Bring a towel along with swimwear, sunscreen, and a sun hat.

Can I cancel the booking?

You can cancel up to 24 hours in advance for a full refund. Reserve-now, pay-later booking is also available.