Direct flights from Luoyang

There is no direct flight from Urmuqi to either Datong or LY.
If you want to go to the Datong, you can fly to Taiyuan and then transfer local buses for Datong.
If you want to LY, you can fly to Zhengzhou and then use trains or buses for LY.
From LY to Datong, there is no direct flight. You can take a direct bus from LY Bus Station to Datong or take a train to Taiyun and then to Datong.