Ferries from Heraclio to Syros can peak at up to 1 daily sailings, Sailing frequency typically peaks in the summer months, with approximately 7 departures offered each week. While schedules may be reduced from Heraclio to Syros in other seasons, ferry services are often still available.

Ferry travel from Heraclio to Syros on average typically takes 5h 25m. The earliest ferry usually leaves from Heraclio at 08:00, arriving to Syros at 13:15 The latest ferry departs at 08:00 and arrives at 16:30.