Ferries from Syros to Sifnos can peak at up to 8 daily sailings, Sailing frequency typically peaks in the summer months, with approximately 9 departures offered each week. While schedules may be reduced from Syros to Sifnos in other seasons, ferry services are often still available.

Ferry travel from Syros to Sifnos on average typically takes 7h 25m. The earliest ferry usually leaves from Syros at 07:00, arriving to Sifnos at 10:00 The latest ferry departs at 16:00 and arrives at 19:55.