Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 19:00 and arrives at Krabi Krabi International Airport at 20:30.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 223 Km. So the average speed is roughly 149 Km.
The best day to arrive at Bangkok is Friday and it would be best to avoid Monday, as prices are on average 75.54% higher than on Friday. (Average prices, based on 1041891 datapoints.)
We have a lot more statistics for flights GA 263 and between Bangkok and Krabi.