Ferries from Milos to Koufonisi can peak at up to 2 daily sailings, Sailing frequency typically peaks in the summer months, with approximately 7 departures offered each week. While schedules may be reduced from Milos to Koufonisi in other seasons, ferry services are often still available.

Ferry travel from Milos to Koufonisi on average typically takes 4h 30m. The earliest ferry usually leaves from Milos at 08:00, arriving to Koufonisi at 12:30 The latest ferry departs at 12:25 and arrives at 17:15.