The calculated distance (air line) between Dietlikon / Dietlikon (Dorf) and Luzern is approximately 29 miles respectively 47 kilometers.
By car or train, the actual journey to Luzern is certainly longer, as only the direct route (as the crow flies) between Dietlikon / Dietlikon (Dorf) and Luzern has been calculated here.
Air line (approximately)
47 kilometers
25 nautical miles