Is there a direct bus from wulingyuan bus station to Zhangjiajie airport? what time the last bus?

As I know, there is no direct bus between the two spots.
You are advised to take bus no. 4 (6:10-19:30) with CNY1/person for 20 minutes, or a taxi for 10 minutes (CNY10-20) to Central Bus Station, then take the regular bus (06:30 – 17:30) to reach your destination. The ticket fare is CNY12/person, and the duration time is 40-50 minutes.