What is the best way to get to Huaihua airport from Feng Huang town?

We plan to be in Feng Huang during the first week of December 2015. After that we would like to fly to Guangzhou. The flights from Tongren to Guangzhou will cost double of flights from HH City to Guangzhou. We therefore will need to know how do we get to zhijiang airport. Can we take a bus from Feng Huang to the city and then a taxi to the airport conveniently?
Suwan, from Bangkok, Thailand