Almost all towns and cities provide some sort of public transport such as buses and taxi cabs therefore getting around in Greece is not a challenge.
Details of virtually all varieties of public transport in Greece which include airlines, airports in Greece, bus routes, driving maps and trains in Greece are available at this website.
The tables below can provide more info regarding the transport options to get around Greece: Travel by rail, travel by air, and travel by bus and car.
Airports in Greece
Public Transport in Greece
Greek Public Transport Questions