The first 12.9 km (8.0 mi) long section of the railway line from Helsingør to Hornbæk opened on 22 May 1906 as the Helsingør-Hornbæk Banen (HHB).

[3] The next 12 km (7.5 mi) long section from Hornbæk onwards to Gilleleje} opened on 11 July 1916 and the railway changed its name to Helsingør-Hornbæk-Gilleleje Banen (HHGB).

Lokalbanen A/S merged with Regionstog A/S on 1 July 2015 to form the railway company Lokaltog A/S which is currently responsible for train operation and related passenger services on the Hornbæk Line.

[1] Lokaltog operates a fairly intensive timetable on the Hornbæk Line with light DMUs working a fixed 30-minute frequency most of the day.

During the summer months of July and August, Nordsjællands Veterantog operates weekend steam trains on the Hornbæk Line between Grønnehave and Gilleleje.