From Zurich main station:

From Bahnhofquai with Tram line 11 (direction Auzelg, green) to the "Radiostudio" station, then bus No. 32 (direction Holzerhurd) and then get off at the "Neuaffoltern" bus stop.

From Oerlikon train station:

Take bus No. 62 (direction Unteraffoltern)/ No. 61 (direction Mühlacker) both: bus stop "Neuaffoltern" (three stops).

Click on the map for an enlargement.