Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 19:15 and arrives at Krabi Krabi International Airport at 20:40.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 223 Km. So the average speed is roughly 157 Km.
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Thursday, as prices are on average 93.89% higher than on Tuesday. (Average prices, based on 1057983 datapoints.)
We have a lot more statistics for flights VZ 344 and between Bangkok and Krabi.