The calculated distance (air line) between Sant Cugat del Vallès and El Prat de Llobregat is approximately 10 miles respectively 16 kilometers.
By car or train, the actual journey to El Prat de Llobregat is certainly longer, as only the direct route (as the crow flies) between Sant Cugat del Vallès and El Prat de Llobregat has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles