Flight Surat Thani International Airport departs from Surat Thani Surat Thani International Airport at 19:10 and arrives at Bangkok Don Mueang International Airport at 20:25.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 187 Km. So the average speed is roughly 150 Km.
The best day to arrive at Surat Thani is Friday and it would be best to avoid Wednesday, as prices are on average 33.67% higher than on Friday. (Average prices, based on 350956 datapoints.)
We have a lot more statistics for flights SL 747 and between Surat Thani and Bangkok.