The Si 204D was used mainly in B- and C-Schools (advanced schools) and in FÜG 1 (delivery wing of the Luftwaffe), probably as a taxi aircraft for crews who had delivered other aircraft to fighting units.
Luft Hansa received at least four Si 204: The first prototype, D-AEFR, was evaluated from March to May 1941 by Luft Hansa Prague.