The calculated distance (air line) between Onze-Lieve-Vrouw-Waver and Jette is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Jette is certainly longer, as only the direct route (as the crow flies) between Onze-Lieve-Vrouw-Waver and Jette has been calculated here.
Air line (approximately)
27 kilometers
15 nautical miles