The duration of the ferry journey from Santorini (Athinios Port) to Mykonos depends heavily on whether you choose a high-speed "catamaran" or a conventional "slow" ferry. On a high-speed ferry (operated by companies like Seajets or Minoan Lines), the trip typically takes between 2 hours and 2 hours and 30 minutes. These vessels are fast but can be "bumpy" in the high winds of the Meltemi season. In contrast, a conventional ferry (like those from Blue Star Ferries) can take between 3 hours and 30 minutes to 5 hours, as they often make more stops at intermediate islands like Ios, Naxos, or Paros. In 2026, the ferry schedule is most frequent from May to October, with up to 10 sailings per day. It is a high-fidelity travel tip to book the high-speed option if you are on a tight schedule, but choose the larger, conventional ferry if you are prone to seasickness, as the larger ships are much more stable in the waves of the Aegean Sea.