Operations commenced on 14 July 1882, and the line was transferred to the Compagnie du chemin de fer de Paris à Orléans (PO) the following year.

To cope with the chronic congestion of the only road to reach the Quiberon peninsula from the mainland, the line was relaunched in 1985 with the introduction of single fare shuttles, jointly sponsored by the Brittany region and the SNCF as part of the TER Bretagne service.

The name of this shuttle service is directly related to traffic jams that trains can avoid: "Corkscrew".

This operation provides a more consistent service to the peninsula during the two months of the summer season.

The rest of the year, a road bus service "TIM", organized by the department of Morbihan, links the stations of Auray and Quiberon.