Ferries from Spetses to Ermioni 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 Spetses to Ermioni in other seasons, ferry services are often still available.

Ferry travel from Spetses to Ermioni on average typically takes 30m. The earliest ferry usually leaves from Spetses at 06:10, arriving to Ermioni at 06:40 The latest ferry departs at 16:45 and arrives at 17:10.