The calculated distance (air line) between Sidi Bel Abbes and Aïn Defla is approximately 164 miles respectively 263 kilometers.
By car or train, the actual journey to Aïn Defla is certainly longer, as only the direct route (as the crow flies) between Sidi Bel Abbes and Aïn Defla has been calculated here.
Air line (approximately)
263 kilometers
142 nautical miles