Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 16:00 and arrives at Hat Yai Hat Yai International Airport at 17:25.
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 Tuesday and it would be best to avoid Sunday, as prices are on average 157.7% higher than on Tuesday. (Average prices, based on 2933352 datapoints.)
We have a lot more statistics for flights DD 7112 and between Bangkok and Hat Yai.