Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 19:50 and arrives at Hat Yai Hat Yai International Airport at 21:15.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 143 Km. So the average speed is roughly 101 Km.
The best day to arrive at Bangkok is Sunday and it would be best to avoid Wednesday, as prices are on average 118.42% higher than on Sunday. (Average prices, based on 347730 datapoints.)
We have a lot more statistics for flights VZ 328 and between Bangkok and Hat Yai.