Flight Shenzhen Bao'an International Airport departs from Shenzhen Shenzhen Bao'an International Airport at 16:00 and arrives at Bangkok Suvarnabhumi Airport at 18:15.
The flighttime is about 3h 15m. The distance travelled ("as the bird flies"): 1477 Km. So the average speed is roughly 454 Km.
There is an 1 hour time difference between Shenzhen and Bangkok