The calculated distance (air line) between Deir Ḥannā and Umm el Faḥm is approximately 27 miles respectively 43 kilometers.
By car or train, the actual journey to Umm el Faḥm is certainly longer, as only the direct route (as the crow flies) between Deir Ḥannā and Umm el Faḥm has been calculated here.
Air line (approximately)
43 kilometers
23 nautical miles