Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 08:30 and arrives at Hat Yai Hat Yai International Airport at 10:00.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 143 Km. So the average speed is roughly 95 Km.
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Saturday, as prices are on average 139.96% higher than on Tuesday. (Average prices, based on 347716 datapoints.)
We have a lot more statistics for flights FD 4202 and between Bangkok and Hat Yai.
