The calculated distance (air line) between Týn nad Vltavou and Děčín is approximately 108 miles respectively 174 kilometers.
By car or train, the actual journey to Děčín is certainly longer, as only the direct route (as the crow flies) between Týn nad Vltavou and Děčín has been calculated here.
Air line (approximately)
174 kilometers
94 nautical miles