The calculated distance (air line) between Sukkur and Tando Allahyar is approximately 155 miles respectively 250 kilometers.
By car or train, the actual journey to Tando Allahyar is certainly longer, as only the direct route (as the crow flies) between Sukkur and Tando Allahyar has been calculated here.
Air line (approximately)
250 kilometers
135 nautical miles