When RAF St Athan opened in the late 1930s, it caused the Vale of Glamorgan Line to experience a much-needed surge in traffic.

Whilst this was convenient for the eastern area of the base, the western part was poorly served.

[3] St. Athan halt was located to the east of a bridge that carried the former main road between Llantwit Major and Barry.

From 1 September 1939, the halt had served the West Camp site of RAF St. Athan and it occupied a very cramped position in a cutting.

It changed to 'station' status on 3 May 1943 but along with all Vale of Glamorgan Branch stations closed in June 1964.