Ferries from Plymouth to Roscoff 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 Plymouth to Roscoff in other seasons, ferry services are often still available.

Ferry travel from Plymouth to Roscoff on average typically takes 8h 55m. The earliest ferry usually leaves from Plymouth at 13:45, arriving to Roscoff at 05:30 The latest ferry departs at 22:00 and arrives at 09:15.