Distance between Irkutsk and Ulaanbaatar is 518.24 km.
This distance is equal to 322.02 miles, and 279.64 nautical miles.
The distance line on map shows distance from Irkutsk to Ulaanbaatar between two cities.
If you travel with an airplane (which has average speed of 560 miles) between Irkutsk to Ulaanbaatar,
It takes 0.58 hours to arrive.