The International country code of Greece is +30 (00 30 from Europe and 011 30 from North America). The code for Santorini is 22860. To call Santorini from abroad dial +30-22860 followed by the number.
More information about elephone numbers in Greece can be found here
Aegean Airlines: (+30) 2286 028500 Athens International airport El. Venizelos: (+30) 210-3530000 Health Centre Fira: (+30) 2286 360300 District Firts Aid Station Oia: (+30) 2286 071227 Post Office Fira: (+30) 2286 022238
From Athens to Santorini airport
Athens International Airport : http://www.aia.gr/
Nearly all international flights arriving in Greece during this period allow adequate time for making the connecting flight to Santorini, but because local flights have a minimum seating capacity, please book these flights early.
Travel to Santorini by boat from the Port of Piraeus
For those participants having extra time, there is a regular ferry boat service to Santorini from Piraeus offering a relaxing, pleasant journey. The cost is reasonable and takes an average of nine to ten hours. Advanced reservations are not usually required on the ferry boats. For exact times, call Piraeus port authorities at: +30 210 422 6000.
Ferries connect Santorini regularly with the following islands: Ios, Naxos, Paros, Syros, Sikinos, Folegandros, Sifnos, Serifos, Kimolos, Milos, Mykonos, and Heraklion, Crete. You can also fly to Mykonos, Heraklion and Rhodes.