Hydra has no airport, and without a boat of your own, the way in is through Piraeus. Fly to Athens, get to the port, and board a high-speed boat across the Saronic Gulf.
How do you get to Hydra from Athens?
Ferries to Hydra leave from the port of Piraeus, about 9 miles (15 km) south of central Athens. Departures for Hydra use Gate E8. The island lies roughly 42 miles (68 km) across the water, and the boats dock right beside the main town, so there is no second leg to arrange.
The high-speed ferry
This is the workhorse, and the one to choose for a first trip. Alpha Lines, Magic Sea Ferries and Blue Star Ferries serve the route, with around nine direct departures a day on average. You travel as a foot passenger, which suits an island with no cars.
The slower, cheaper way
The faster boats give you most of the morning back on the island. A cabin can be booked on Blue Star Ferries sailings from Piraeus.
Driving to Ermioni
If you already have a car, drive from Athens to Ermioni in the Peloponnese and catch the boat there. The car stays on the mainland, since it can't come to Hydra. This route pays off best when you're already touring the Peloponnese.
How long is the ferry to Hydra?
The high-speed crossing from Piraeus runs from about 1 hour 5 minutes to just over 2 hours, depending on the boat and the number of stops. For planning, use about an hour and a half.
Is it better to take the ferry or fly to Hydra?
Flying gets you as far as Athens, and a boat does the rest. The choices that matter are which boat you take and how you get to the port.
From Athens International Airport, give yourself most of a morning or an afternoon door to door. Clearing immigration takes time, the ride to Piraeus takes about an hour by metro or train, the boat takes up to two hours, and you'll want a cushion for tickets, luggage and the walk to the gate. If your flight lands late, spend the night in Athens and sail the next day.
How do you get to Piraeus from Athens and the airport?
From Athens Airport
You have four options.
- Suburban Railway (Proastiakos): connects the airport with Piraeus in about 65 minutes.
- Metro: Line 3 runs from the airport toward Dimotiko Theatro, in Piraeus, in around an hour. The airport and the metro are fully accessible with ramps and elevators, which helps with suitcases.
- Taxi: the easiest choice with heavy bags. Taxi prices shift depending on when you travel, how many people ride together and what time of year it is.
- X96 express bus: goes straight to Piraeus with no changes, has plenty of room for luggage and runs around the clock. It is the slowest of the four.
Buy your bus or metro ticket before you board and validate it. On public transportation in Greece, a missing, wrong or unvalidated ticket can bring a fine of up to 60 times the basic fare.
From central Athens
From the center, Piraeus is roughly 20 to 30 minutes away by car, bus or metro. The Green Line (Line 1) links Monastiraki and Omonia with Piraeus station, and Gate E8 is around 10 minutes on foot from there. That walk takes longer with a suitcase in tow.
For a morning boat, the metro is the dependable choice because traffic doesn't touch it. In summer the port can get crowded and traffic out of Athens can crawl, so many travelers leave about 30 minutes earlier than they think they need, by taxi or any other way.
How do you get to Hydra from other islands?
Hydra has regular boats to Poros and Spetses and sea routes with Methana. It also connects with Ermioni and Porto Heli.
- Poros to Hydra: about 25 to 40 minutes.
- Ermioni to Hydra: about 25 minutes.
- Porto Heli to Hydra: about 1 hour 35 minutes.
A stay on Hydra pairs easily with Ermioni, Poros, Porto Heli or Spetses.
Dokos, the small island nearby, has no public transport from Hydra, so most visitors reach it by private boat. Caiques working as water taxis can also take you to Dokos and to the islets of Kivotos and Petasi. Rates vary widely with the destination, the time of day and how slow business is.
Which way to Hydra is best for you?
- First trip: a high-speed catamaran from Piraeus. It's quick, simple and lands you beside the main town.
- Family with luggage: the same boat, with a taxi to Piraeus and a porter or donkey waiting on arrival.
- Tight budget: the slower conventional ferry, if you can spare the extra hours and make the early departure. The metro to Piraeus saves more than a taxi.
How do you book ferries to Hydra?
Book as soon as your dates are firm. August is the busiest month, and well-off Athenians fill the island every weekend all summer. You can book online with the operators or buy at the ticket offices around Piraeus port. Departure times for your exact date appear when you book, and later-season timetables may not be published until close to the date.
From November to March most hotels and restaurants on the island are closed, so confirm your lodging before you lock in a winter crossing.
Transportation strikes in Greece can shut down seaports, and demonstrations can disrupt transport with little notice. Check the news a day or two before you go and keep some slack in your schedule.
What do Americans need to know before traveling to Hydra?
The U.S. State Department rates Greece as a generally safe destination. U.S. citizens can enter without a visa for stays of up to 90 days, and a passport should have at least three months of validity beyond your planned departure date. A passport reported lost or stolen won't get you in, even if you've found it again. Carry your passport or another photo ID at all times. Pickpocketing and purse-snatching happen at tourist sites and on public transportation, especially the metro, so keep bags zipped on the ride to Piraeus.
How do you get from the port to your hotel?
The port sits right at the main town, and nearly all of the island's hotels are in town or close by, on the waterfront or in the streets climbing the hill behind it. Many are a short walk from the boat. Cobbled lanes and steps are the catch, so wheeled bags can be a chore.
With no cars or motorcycles, people get around on foot or by donkey. Around 500 working donkeys and mules carry luggage from the port to hotels and rentals.
Water taxis line up along the eastern side of the harbor and run to beaches and tavernas that are hard to reach on foot. Mandraki, Vlychos and Plakes are more remote, and you'll probably need a water taxi to come and go.
Porters, some with mules, meet the boats. If your bags are heavy, agree on the price with them before they pick anything up.
Sources
- bucketlisttravels.com (https://www.bucketlisttravels.com/destination/hydra), checked October 18, 2026
- asinglewomantraveling.com (https://asinglewomantraveling.com/one-day-in-hydra-greece/), checked October 18, 2026
- frommers.com (https://www.frommers.com/destinations/hydra/planning-a-trip/), checked October 18, 2026
- hydra.bio.ed.ac.uk (https://hydra.bio.ed.ac.uk/travel-hydra), checked October 18, 2026
- visit-greece.info (https://www.visit-greece.info/en/saronic-islands/hydra/), checked October 18, 2026
- U.S. Department of State (https://travel.state.gov/content/travel/en/international-travel/International-Travel-Country-Information-Pages/Greece.html), checked October 15, 2026
- hellenicseaways.gr (https://www.hellenicseaways.gr/en-gb/destinations/hydra-the-lady-of-the-saronic-gulf), checked October 15, 2026
- U.S. Department of State (https://travel.state.gov/content/tsg_aem/us/en/home/international-travel/travel-advisories/destination.grc.html), checked October 15, 2026
- Visit Greece (GNTO) (https://www.visitgreece.gr/en/islands/saronic-islands/hydra), checked October 15, 2026