From Piraeus Port (Duration 3 to 5 hours) and Rafina Port (Duration 2h 30min to 4h 30min) in Attica , as well as from other islands of the Cyclades such as Ios, Paros, Naxos, Santorini, Syros, Milos, Tinos, Koufonisia, Sifnos and Crete with daily itineraries .