Somewhere in Athens, a traveler stands in Syntagma Square with a Cyclades dream and a blank itinerary, wondering how the capital connects to a volcanic island out in the Aegean. The answer starts on the mainland, with the metro ride out to the airport or a trip to the port, and ends on Santorini, the southernmost island of the Cyclades.
How do you get from Athens to Santorini?
You cross from the Greek mainland to the southernmost Cyclades, a sea-and-sky journey that begins in Athens with a transfer to an airport or a port. Santorini is an island in the Aegean Sea, so no road leads there, and every route has a mainland leg and an island leg.
Once you land or dock, Santorini rewards the effort. The island has an active volcano, and visitors can stay in its caldera, the great water-filled basin that gives the island its shape. In ancient times the island was known as Thera, a name you still meet on maps and in museum labels.
The airport leg from central Athens
Athens International Airport Eleftherios Venizelos stands in Spata, in Attica, and has been receiving flights since 28 March 2001. It sits about 12 miles east of central Athens as the crow flies, though the road bends around intervening hills and stretches to 19 miles.
That gap between the straight line and the road is worth keeping in mind when you plan the day. The airport is a real trip out of the city, not a hop across a neighborhood, and the same airport also receives the long-haul flights that bring many Americans to Greece, with seasonal nonstops from American Airlines to Charlotte, Chicago-O’Hare, Dallas/Fort Worth, New York-JFK and Philadelphia, and from United to Chicago-O’Hare, Newark and Washington-Dulles.
The metro to the airport
The Athens Metro reaches the airport on line 3, and the stretch between the airport and Douk. Plakentias has trains running every 30 minutes. In practice that means you plan your departure around the train rather than expecting one to arrive the moment you reach the platform.
The system keeps set hours, so an early or late flight matters. The table gives them, with the extra late service on weekend nights for lines 2 and 3.
| Service | Runs |
|---|---|
| Athens Metro, daily | 5:30 a.m. to 00:30 a.m. |
| Lines 2 and 3, Friday and Saturday nights | Later than usual |
If you use city buses in Athens
Athens buses have a boarding habit of their own: passengers cannot use the front door to get on or off. If you reach a bus stop with luggage on your way through the city, you enter and leave by the other doors, and it helps to know that before the bus pulls up.
The tramway returned to Syntagma on 19 November 2020, linking the square to the wider city network.
Which options are there?
Three kinds of choices shape the trip: how you leave Athens, how you cross the water, and how you move around Santorini once you arrive. The first and the third are the ones where the details are firm.
Leaving Athens by metro or by road
The metro runs to the airport on line 3 within the operating hours above, with trains on the airport section every 30 minutes. The road covers 19 miles around the hills, which is the figure to bear in mind if you travel by car or other road transport rather than by rail.
Because the airport lies in Spata and not in the city, the choice between rail and road is mostly one of timing and luggage. The metro suits a departure that falls inside its hours, while a very early or very late flight pushes you to think about the road instead.
Crossing the Aegean
Santorini lies in the southernmost Cyclades, so the crossing runs from the mainland out into the Aegean. The island sits at the far southern end of its island group, which is why the trip feels like arriving at the edge of the chain and not partway along it.
Other Cyclades give a sense of how the air network works around the Aegean. Mykonos Airport, for example, has a single asphalt runway, and seasonal flights there come from European cities such as Bologna, Budapest, Naples, Paphos and Vienna with Ryanair, and from Geneva, London-Gatwick, Manchester, Milan-Malpensa, Naples and Nice with EasyJet. Those links belong to Mykonos, not to Santorini, and are mentioned only as a picture of how the islands connect to Europe.
Getting around once you are on Santorini
Some travelers want a vehicle on the island. U.S. visitors driving in Greece must carry a valid U.S. driver’s license, and insurance companies may require an international driver’s permit.
The U.S. Embassy in Greece does not issue these permits. You get yours before you leave the United States, from the American Automobile Association or the American Automobile Touring Alliance, which means the paperwork belongs on your list well before the flight to Athens.
What should you know before you travel from Athens to Santorini?
Know your Athens departure point, the hours of the metro, and what you want to see on the island, because these decide how the day unfolds. The rest is a matter of picking a base on Santorini.
Match your departure to the metro
The Athens Metro starts at 5:30 a.m. and the last trains leave soon after midnight, with later service on Friday and Saturday nights for lines 2 and 3. If your journey to the airport or to a port begins at the edge of those hours, plan the leg around the timetable so you are not stranded in the city.
The airport section of line 3 runs less often than the rest of the network, with trains every 30 minutes. That makes the airport leg the one to time most carefully, since you cannot count on a train arriving on the minute.
What waits on Santorini
The island is shaped by its volcano, and the caldera is where visitors can stay, with the volcano itself counted among the island’s main attractions.
Knowing its old name, Thera, helps when you read museum signs or old maps. Together the volcano, the caldera and Akrotiri give you a short list of things to organize the visit around before you worry about anything else.
Think about the connection from your U.S. flight
If you come from North America, the long flight lands at Athens International Airport, and several carriers serve it seasonally. Air Canada and Air Transat fly nonstop from Montréal-Trudeau and Toronto-Pearson, American Airlines from Charlotte, Chicago-O’Hare, Dallas/Fort Worth, New York-JFK and Philadelphia, and United from Chicago-O’Hare, Newark and Washington-Dulles.
After landing in Spata, the next step is the transfer toward the city or the onward trip to the islands. Having the metro hours and the 19-mile road distance in mind helps you decide before you leave the arrivals hall.
Good to know before you go
Greece uses the euro, so keep some in hand for small purchases on the island and in Athens. Santorini’s volcano, its caldera and the ancient site of Akrotiri are the reasons most itineraries end up here, and the Athens metro, with its early start and late weekend trains, is the thread that ties the first leg together.
Sources
- Wikipedia, Athens International Airport, airlines and destinations (https://en.wikipedia.org/wiki/athens-destinations#Airlines_and_destinations), checked October 12, 2026
- Wikipedia, Mykonos Airport, airlines and destinations (https://en.wikipedia.org/wiki/mykonos-destinations#Airlines_and_destinations), checked October 12, 2026
- Wikipedia, Mykonos Island National Airport (https://en.wikipedia.org/wiki/Mykonos_Island_National_Airport), checked October 12, 2026
- OASA, Athens urban transport (https://www.oasa.gr/en/), checked October 12, 2026
- Athens Transport, public transport guide (https://www.athenstransport.com/english/), checked October 12, 2026
- Santorini official guide (https://www.santorini.gr/), checked October 12, 2026
- Visit Greece (GNTO), Santorini (https://www.visitgreece.gr/islands/cyclades/santorini/), checked October 12, 2026
- U.S. Department of State, Greece travel information, travel and transportation (https://travel.state.gov/content/travel/en/international-travel/International-Travel-Country-Information-Pages/Greece.html), checked October 12, 2026
- Hellenic Train (https://www.hellenictrain.gr/en), checked October 12, 2026
- Wikipedia, Egnatia Odos (https://en.wikipedia.org/wiki/Egnatia_Odos), checked October 12, 2026