Ferries from Syros to Heraclio can peak at up to 2 daily sailings, Sailing frequency typically peaks in the summer months, with approximately 8 departures offered each week. While schedules may be reduced from Syros to Heraclio in other seasons, ferry services are often still available.

Ferry travel from Syros to Heraclio on average typically takes 5h 45m. The earliest ferry usually leaves from Syros at 04:30, arriving to Heraclio at 17:05 The latest ferry departs at 16:45 and arrives at 17:55.