Flight Haikou Meilan International Airport departs from Haikou Haikou Meilan International Airport at 16:45 and arrives at Bangkok Suvarnabhumi Airport at 18:15.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 1094 Km. So the average speed is roughly 438 Km.
There is an 1 hour time difference between Haikou and Bangkok