Athens airport is a major hub in the Aegean, Balkan and East Mediterranean regions. Continental, Delta and Olympic maintain non-stop flights from North America, while a large number of European carriers fly direct into Athens. The new Athens Eleftherios Venizelos International Airport 27 km (17 miles) east of the city center, near the suburb of Spáta, opened in 2001 as part of the infrastructure improvements in preparation for the Olympics and is now one of the more attractive and efficient major European airports. The airport has excellent public transit connections to the city and the usual array of food stands, duty-free shops, and other airport services.
The national rail service, OSE, connects Athens to other cities in Greece - however, do not expect the diversity and complexity of railroads you usually find in other European countries; the national railroad system is poor in Greece, in effect having only two train lines. One goes south to thePelopponese and the other to the north, connecting Athens with the second major city in Greece, Thessaloniki.
However the rail systems in and about the city are top class. The new Athens Metro system, opened in 2001 (and followed by a restoration of the old Line 1) and currently being extended, is a wonder to behold, and puts many better-known metro systems to shame. Many metro stations resemble museums as they exhibit artifacts found during excavations for the system.
Athens is served by a network of diesel buses, natural gas buses and electric trolley buses run by the Athens Urban Transport Organisation. A standard bus ticket costs €1. It is called the Integrated ticket and allows for multiple trips within 90 minutes, and it's available in most kiosks. Use a €3.20 ticket to travel to or from the airport. If you tend to stay for more than a week then a weekly pass for €10 is the most economical. It gives you unlimited rides on almost all public transit (bus, tram, train, subway) for 7 days. You only need to validate once, before first use. Buses will not stop unless you signal the driver by raising your arm.