Best Athens Day Cruises (2026): 8 Saronic Island Cruises Compared

An Athens day cruise costs €115 to €150 and runs 9 to 12 hours out of Piraeus. Two quite different trips are sold under that one phrase, and the reviews separate them sharply.

The classic is the one day cruise to Hydra, Poros and Aegina: a sightseeing run on a large ship, three island stops, a buffet lunch and a Greek dance show on the way home. The alternative is a swimming cruise to Agistri, Moni or Metopi and Aegina, on boats ranging from a 500-passenger party deck to a 49-berth wooden yacht, where anchoring to swim is the point of the day.

Below we compare eight, plus a ferry-based day trip that skips the cruise entirely. Across them, boat size appears to matter more than price or itinerary.

Two different things get sold as a day on the Greek islands from Athens, and picking the wrong one is the most common way people end up disappointed.

A day cruise is a boat experience that happens to stop at islands. You get three or four hours ashore split across two or three places, a meal on board, swimming on the Saronic routes, and several hours at sea that are part of the point rather than dead time. It suits you if the sailing itself appeals, if you want to sample several islands, or if this is your only free day and you would rather see a lot briefly than one place properly.

An island day trip is the opposite trade. The €49 Aegina trip on this page uses scheduled ferries and a sea taxi, so the boat is transport rather than the attraction, and you get most of a day on one island: the Byzantine ruins at Paleochora, the Saint Nektarios monastery, the Temple of Athena Aphaia, a couple of hours on a beach and time in town. At €89 once ferry tickets and site entry are counted, it is also the cheapest option here.

The rule of thumb we would use: if you can name the island you want to see, take the ferry. If you cannot, take the cruise. And if the island you can name is Hydra, the fast ferry from Piraeus is 1 hour 5 and €35 to €42, against the 1h20 to 1h30 ashore the cruise allows.

The one day cruise from Athens to Hydra, Poros and Aegina is the trip most people have heard of, and between its two operators it carries 6,682 reviews at 4.1. Every swimming cruise on this page rates 4.5 to 4.9. Having read 112 reviews of it, four things come up again and again, and together they look like the explanation.

It feels rushed, even though the hours say otherwise. Total time ashore is about 4 hours, the same as the yacht cruises, but it is split three ways and Poros gets only 40 to 50 minutes. That is enough to walk the harbour and buy a coffee. More than two dozen reviewers ask for longer stops, and the most common suggestion is to drop Poros and give the time to Hydra and Aegina. Tellingly, guests whose sailing skipped Hydra for weather report the shortened trip as better, because the remaining islands got more time.

Nothing to drink is included, not even water. Lunch is a buffet and it is generally well liked, but every drink is bought on board: around €1 for water and €5 for a can of Coke. On the yacht cruises at a similar price, wine, beer and soft drinks are unlimited and free. Several guests name this as their only complaint.

The island tours cost €20 to €30 more, and are not mentioned at booking. Add €10 for the Temple of Aphaia on Aegina. Nine reviewers flag the surcharge, most saying they were not told in advance. The tours themselves get good reports; the surprise is the problem.

Seats are not allocated. On a ship licensed for up to 600, guests describe boarding to a nearly full deck, hunting for four seats together, and coming back early from islands to reclaim a spot. That is the clearest sign of what capacity actually costs you.

Ranked by how confidently we would recommend each one, weighing rating, review depth, boat size and what the price actually covers.

The two routes visit almost entirely different islands, which is worth understanding before you choose on price.

Aegina is the only island both routes share. It is the largest and most lived-in of them, known for pistachios, a working harbour, the Temple of Athena Aphaia and a Byzantine ruin at Paleochora. Cruises give it long enough for the town but not the temple. Only the ferry-based day trip reaches Athena Aphaia.

Agistri is small, pine-covered and quiet, and gets 1h30 to 2 hours on the swimming cruises. Enough to swim, walk into Megalochori or hire a bike, not enough to cross the island.

Moni and Metopi are uninhabited islets used as swim anchorages, and which one you get depends on the wind. Moni has roaming peacocks and deer. Note that one operator does not land here at all: the hour is spent swimming from the boat.

Hydra is the prize on the other route and the one most shortchanged by it. It is the only sizeable car-free island in Europe, with around 500 donkeys and mules doing the work of vehicles, and the cruise gives it 1 hour 10. Poros gets 50 minutes, which is a walk along the waterfront and back to the boat.

These cruises are weather-dependent in a way the booking pages state clearly and most people skim past. Operators reserve the right to change the route, and one warns explicitly that sea conditions can differ from those on land: a calm morning in Athens does not guarantee a comfortable Saronic Gulf.

What that means in practice is worth knowing before you book. If the port authority blocks sailing, or there is a technical fault, you get a full refund or a reschedule. But if the port authority permits sailing in less than ideal weather, the cruise runs as scheduled, and choppy water is not grounds for a refund. The swim stop is the first thing to move: if Moni is exposed, boats go to Metopi instead, and one operator lists that swap as standard practice rather than an exception.

There is also a seasonal quirk on the Aegina day trip worth planning around. Entry to the Temple of Athena Aphaia is free for EU citizens under 25 and non-EU visitors under 18 all year, but the reduced rate for EU citizens aged 65 and over applies only between 1 October and 31 May. From June through October there is no senior concession at all, which is precisely when most people visit.

The two routes go to genuinely different places, which is easier to see than to describe. The swimming cruises stay in the near Saronic, running southwest from Marina Zeas to Agistri, the Moni islet and Aegina. The Hydra route heads much further south from Marina Kallithea, and that distance is where the day goes.

That distance is the whole difference: about 6 hours 45 at sea against 4 hours ashore. The yacht cruises cover far less water, which is how they fit similar time ashore into a shorter day.

Note how close Moni sits to Aegina, under 500 metres off the cape at Perdika, which is why it works as a swim anchorage rather than a landing. Uninhabited because it has no drinkable water, it became a game park in 1962 and now holds deer, peacocks, kri-kri goats and squirrels, several used enough to people to wander onto the beach.

Cruises run €115 to €150 and the ferry-based day trip works out at €89 once its extras are counted. What the money buys is mostly deck space. For a shorter day closer to the city, an Athens catamaran cruise covers the Riviera in half the time, and the same coast runs south to the Temple of Poseidon at Cape Sounion.

• Check the passenger cap before the price. It is the single strongest predictor of how guests rate these trips, and it ranges from 45 to 600 across otherwise similar itineraries.
• Confirm which Piraeus departure point you have. Marina Zeas (signposted Pasalimani), the Evermore marina at Kallithea and Marina Kallithea are three different places, and one operator warns the boat will not wait.
• Add €40 to the €49 Aegina trip. Ferry and sea taxi are €30 and the Athena Aphaia site is €10, neither in the headline.
• Bring a towel. Only one cruise here supplies them, and every swimming trip assumes you brought your own.
• If you are a group booking separately, say so. One operator runs four boats and will only place you together if you ask in advance. The same operator needs passport details ahead of departure for port police clearance.
• Going for Hydra specifically? Take the ferry. The fast boat from Piraeus is 1 hour 5 and €35 to €42, against 1 hour 10 ashore on the cruise.
• Ask about accessibility before booking, not after. One operator excludes wheelchair users and guests with mobility impairments outright; the others simply do not say.

We compared Athens day cruises carrying a published rating and a meaningful review base, then kept eight covering both Saronic routes and every format from a 600-passenger ship to a ferry-based guided day trip. For each we read the current listing in September 2026 and recorded its rating, review count, duration, published capacity, departure point, per-island timings and full inclusions, then checked those against operator material where it exists. Comparing the published itineraries side by side is what established that time ashore is near-identical across the field, which ruled out the obvious explanation for the rating gap and pointed at boat size instead. Where an operator does not publish a passenger cap we have said so rather than estimating.