Line 5559 would run from Freising station as a four-track line together with line 5500 (the Munich–Regensburg railway) to Neufahrn North junction (Abzweig Neufahrn-Nord). It would run over the "Neufahrn counter curve" (Neufahrner Gegenkurve) to reach line 5557 (the Neufahrn Link) at Neufahrn East junction (Abzweig Neufahrn-Ost) and connect with line 5556 (Munich East–Munich Airport railway) at Airport West junction (Abzweig Flughafen-West). From there the existing double-track line would be shared through the airport. The route from Freising to Munich Airport is long.
