Ferries from Ios to Syros can peak at up to 2 daily sailings, Sailing frequency typically peaks in the summer months, with approximately 9 departures offered each week. While schedules may be reduced from Ios to Syros in other seasons, ferry services are often still available.

Ferry travel from Ios to Syros on average typically takes 3h 0m. The earliest ferry usually leaves from Ios at 04:35, arriving to Syros at 11:25 The latest ferry departs at 17:05 and arrives at 17:25.