The calculated distance (air line) between Pfäffikon / Pfäffikon (Dorfkern) and Luzern is approximately 31 miles respectively 51 kilometers.
By car or train, the actual journey to Luzern is certainly longer, as only the direct route (as the crow flies) between Pfäffikon / Pfäffikon (Dorfkern) and Luzern has been calculated here.
Air line (approximately)
51 kilometers
27 nautical miles