The metro leaves every 30 minutes to the center of the Greek capital (Syntagma Plein), you can change trains there if you want to go to Omonia Plein or Makriani, you must go further if you want to go to Monastiraki Station, there, you can change to Line 1 to Piraeus.
There is also a city train connection to Larissis Station, trains from there, leave to all destinations on the Greek mainland.
Car and bus
New roads were built the same time as the new airport was built, it is now easy to avoid traffic in Athens. For routes to the south, you follow the signs to Elefsina, for routes to the north you follow the signs to Thessaloniki. The tollway Attiki Odos connects the airport with the western districts of Athens.
There are buses outside the Arrivals Hall (by exits 4 and 5). Line E94 goes directly to the subway station Ethniki, line E95 goes to Syntagma Plein and line E96 goes to Piraeus harbor. A new bus line, E93, connects the airport with the central bus station in Kiffisou Street. A bus line has also been planned to Rafina harbor.
Car Rental - Athens Airport
There are six counters from car rental companies in the Arrivals Hall: Avis, Budget, Europcar, Hertz, National/Alamo and Sixt. You can also reserve a rental car in advance using the service EasyTerra provides, they compare the rates of several providers in a single quote.
Taxis are by exit 1. A ride to the center of the Greek capital is between €15.00–€25.00 and takes about half an hour to an hour, depending on the traffic. Ask the driver to set the meter and make sure he uses the correct rate (a “2” before the meter means you pay double the price but is only applied at night).
Short-term parking (P1 and P2) are in front of the Arrivals Hall, long-term parking is at P3 and is connected with the terminal by a shuttle bus, at all parking places, the first 20 minutes are free.
You can also leave your car with a driver by the Departures Hall, Central Parking Systems Athens (tel: +30(0)210 353 4260), the rates are €75.00 for 5-7 days and €5.00 per day after that.