Which time is the last bus from Jiuhuang airport to Jiuzhaigou ? From Jiuzhaigou to airport ?

I am not sure about when the last bus will leave for JZG, but your arrival time is too late. The bus shoul be out of service then. If you are traveling in a group, it is best to rent a taxi or car then and it costs around CNY260. Anyway, as for the schedule of the shuttle buses, you can dial 0837-7243612 to consult the airport directly.