The calculated distance (air line) between Luzern and Zürich (Kreis 11) is approximately 28 miles respectively 45 kilometers.
By car or train, the actual journey to Zürich (Kreis 11) is certainly longer, as only the direct route (as the crow flies) between Luzern and Zürich (Kreis 11) has been calculated here.
Air line (approximately)
45 kilometers
24 nautical miles