The calculated distance (air line) between Hajdúhadház and Székesfehérvár is approximately 156 miles respectively 251 kilometers.
By car or train, the actual journey to Székesfehérvár is certainly longer, as only the direct route (as the crow flies) between Hajdúhadház and Székesfehérvár has been calculated here.
Air line (approximately)
251 kilometers
135 nautical miles