Distance between Lang Son and Louangphabang is 472.95 km.
This distance is equal to 293.88 miles, and 255.2 nautical miles.
The distance line on map shows distance from Lang Son to Louangphabang between two cities.
If you travel with an airplane (which has average speed of 560 miles) between Lang Son to Louangphabang,
It takes 0.52 hours to arrive.