To 20 ports; the busiest crossings are to Milos (35 minutes, about six times a day in season), Serifos (20 minutes, five times a day in season), Folegandros (1 hour 40 minutes, four times a day in season), Piraeus (2½ hours, four times a day in season), Naxos (1 hour 20 minutes, four times a day, late March to October), Mykonos (1 hour 50 minutes, four times a day, late March to October), Santorini (2 hours 50 minutes, about four times a day in season) and Paros (45 minutes, about three times a day in season).