Is there air asia connecting flight from xian to hyderabad?

Well, first of all, no direct flight operates between these two places. You are suggested to fly to Hong Kong first. Then you can transfer the flight to destination directly. As I know, there is no Asia Airline for this route.

If you still wanna take Aisa Air, after arriving at HK, you can fly to Kuala Lumpur first and then Hyderabad. In this way, several air routes operated by Aisa Airline are available.