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

Ferry travel from Thessaloniki to Alonnisos on average typically takes -. The earliest ferry usually leaves from Thessaloniki at -, arriving to Alonnisos at - The latest ferry departs at - and arrives at -.