The entire station is underground, with three pairs of platforms: one for S-trains, one for main line trains and one for the metro.

In order to let passengers easily change from S-trains and regional trains to the Metro and vice versa, a tunnel was constructed to connect the train platforms with the Metro platforms.

The S-train platforms were therefore closed partially from March 2000 to February 2002, allowing only the front-most four doors to open at the station.

With the opening of the first phase of the Metro on 19 October 2002, Nørreport station started serving M1 and M2.

The platforms for regional and intercity trains underwent renovation and reopened in April 2014.