Ferries from Roscoff to Plymouth can peak at up to 2 daily sailings, Sailing frequency typically peaks in the summer months, with approximately 7 departures offered each week. While schedules may be reduced from Roscoff to Plymouth in other seasons, ferry services are often still available.

Ferry travel from Roscoff to Plymouth on average typically takes 5h 50m. The earliest ferry usually leaves from Roscoff at 09:00, arriving to Plymouth at 14:15 The latest ferry departs at 15:00 and arrives at 21:10.