Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 06:00 and arrives at Surat Thani Surat Thani International Airport at 07:10.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 187 Km. So the average speed is roughly 160 Km.
The best day to arrive at Bangkok is Monday and it would be best to avoid Tuesday, as prices are on average 135.39% higher than on Monday. (Average prices, based on 721182 datapoints.)
We have a lot more statistics for flights DD 570 and between Bangkok and Surat Thani.