"Athens International Airport S.A":

An innovative co-operation between the public sector and private initiative On July 31st, 1995, the Government of the Hellenic Republic and the private consortium led by HOCHTIEF Aktiengesellschaft (winner of the international tender for a strategic equity partner under a BOOT - Build, Own, Operate and Transfer - scheme) entered the Airport Development Agreement (ADA) with the joint aim to develop the new international airport at Spata by means of a Public-Private Partnership (PPP). The Airport Development Agreement (ADA) establishes a 30-year concession ratified by Greek Law 2338/95 granting the Airport Company the exclusive right to occupy and use the site for the purpose of the "design, financing, construction, completion, commissioning, maintenance, operation, management and development of the airport".
The concession period was initiated in 1996 upon the establishment of "Diethnis Aerolimenas Athinon A.E.", a private legal entity formed under Greek company law as a societe anonyme that trades as "Athens International Airport S.A."(AIA) and "is managed and operated as a private sector company".
The Public-Private Partnership
AIA is considered a pioneer international Public-Private Partnership of its type in the world, being the first major greenfield airport constructed with the participation of the private sector.
The Greek State holds 55% of AIA’s shares. The State's interests are jointly represented by the Ministers of Economy, and Transport & Communications.
The private sector partner comprises three private shareholders, who collectively hold 45% of the Airport Company’s shares.
write by www.aia.gr
Customer services :
HOTELS  
Where to stay? International Airport Guide offers discounted rates on Athens Airport Hotels. We have negotiated rates offering 45% off hotel rack rates.

Taxi [ Private transfers]
Taxis are available at a stand outside the arrivals hall. Travel time to the center of Athens is about 20 to 30 minutes, but much longer during the rush hour. Agree on the fare before departing, or make sure the meter is working. Fare should be about 35-45 Euro. Visit the best company taxi transfers Note: The fare will be about twice this rate from midnight to 6 A.M.