I would like to go to Jiuhuang Airport from Bejing by plane.

Generally speaking, there are direct planes between the two places, but on that specific day, there may be no planes as far as I know.
I suggest you to call the airport at 0837-7243770 for more detail information.

Allright thanks.
But is it possible at any other day in june?
Otherwise we can go to chengdu first and then to JZG. After that I want to go to Lijiang or zhongdian. Are there direct flights from JZG to Lijiang or zhongdian?

It is hard to say. To ensure your trip to be smooth, I suggest you fly from Beijing to Chengdu or Chongqing first. Then you can easily catch a flight to Huanglong Airport.

For your journey heading for Lijiang or Zhongdian, also I suggest you go to Chengdu Airport to take the direct flight. Regular flights are uually arranged from Chengdu to Lijiang each day. Take easy!