It runs from Munich Airport station and Freising to Neufahrn bei Freising station, where most trains are coupled (and uncoupled in the opposite direction).

It is operated using class 423 four-car electric multiple units, usually as two coupled sets.

In the evenings and on Sundays they generally run as single sets.

took over the section from Munich East to Kreuzstraße on 10 June 2001.

Services to Munich Airport commenced on 29 November 1998.