The best way to get around Santorini is on foot or by bus ... If you're planning to do a little island hopping, you can catch a ferry from Athinios (about 5 miles south of Fira).
Only two of Santorini's five islands are inhabited, and tourists typically spend most if not all their time on the largest island, Thira. Sitting off the main island's northwest coast is the ...
I recently booked an economy-class ticket on a Blue Star ferry from Athens to Santorini for 45 euros, or about $50. The nearly eight-hour journey was set to be my longest ferry ride to date.