Santorini has its own airport for domestic and international flights
Santorini has frequent itineraries from Piraeus.
In summer there are ferries that run to Santorini from Piraeus 2-3 times a day and from Rafina four times a week, Io-Naxos-Paros 2-3 times a day, twice a week from Syros, twice a week from Milos, Sikinos – Folegandros 4 times a week, from Mykonos daily, from Rhodes twice a week, and daily to Crete.
The island is also connected by air with Rhodes and Heraklion during the summer season.
In general, Santorini is a great place to start if you want to go to other islands, as it is connected to most of the Cyclades islands.