The first part of the Schiphollijn was opened on 20 December 1978 between Schiphol and Amsterdam South station. At the time, the track was not connected to the rest of the railway network. The track includes a tunnel with a length of 6 kilometers (3.7 miles). The railway station of Schiphol is located in this tunnel. At the time of construction, it was the first railway station in the Netherlands in a tunnel.
In 1981, the line was extended to Amsterdam RAI station on the eastern side, and to Leiden at the southern side, where it connected to the main railway network. Along this track, the stations were opened at Hoofddorp and Nieuw Vennep.
In 1993, the south branch was extended from Amsterdam RAI to Weesp. Along the track, the stations Duivendrecht and Diemen Zuid were opened. This link enabled direct connections from the eastern and northern provinces to Schiphol.