The calculated distance (air line) between Sabadell and El Prat de Llobregat is approximately 15 miles respectively 24 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 Sabadell and El Prat de Llobregat has been calculated here.
Air line (approximately)
24 kilometers
13 nautical miles