Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 19:15 and arrives at Macau Macau International Airport at 23:05.
The flighttime is about 2h 50m. The distance travelled ("as the bird flies"): 1450 Km. So the average speed is roughly 512 Km.
There is an 1 hour time difference between Bangkok and Macau