The calculated distance (air line) between Frankfurt am Main and Halle (Saale) is approximately 172 miles respectively 277 kilometers.
By car or train, the actual journey to Halle (Saale) is certainly longer, as only the direct route (as the crow flies) between Frankfurt am Main and Halle (Saale) has been calculated here.
Air line (approximately)
277 kilometers
149 nautical miles