how long does it take to travel to feng huang cheng from zhangjiajie and what is the fare?

There is a flight provided by China Southern Airlines at 19:15 from Changsha to Zhangjiajie. It takes about 45 minutes. The full airfare is CNY770 for Economy Class and CNY1390 for First Class.
After arrive in Zhangjiajie, it is too late to catch a bus to Fenghuangcheng. I suggest you stay in Zhangjiajie for one night. The next early morning, you can go to Zhangjiajie general bus station to take the tourist bus to Fenghuangcheng. The bus departs at 08:30 and 14:30. It takes about 4 hours and costs about CNY62.