The calculated distance (air line) between Aš and Ústí nad Labem is approximately 86 miles respectively 139 kilometers.
By car or train, the actual journey to Ústí nad Labem is certainly longer, as only the direct route (as the crow flies) between Aš and Ústí nad Labem has been calculated here.
Air line (approximately)
139 kilometers
75 nautical miles