Why are air tickets from Chengdu to Urumqi always cancelled?

1. Weather reason: The flight is cancelled due to weather, equipment or airport, and the most common reason is usually the weather.

2. Flight control: Air control means that there are multiple take-off and landing flights at the same time. In order not to affect the on-time take-off and landing tasks of subsequent flights, it is necessary to control the planes that are about to land but still in the air and the flights that are about to take off, which will cause some flights to be cancelled.