Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 21:45 and arrives at Phuket Phuket International Airport at 23:15.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 290 Km. So the average speed is roughly 193 Km.
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Saturday, as prices are on average 70.87% higher than on Tuesday. (Average prices, based on 22523196 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 192 datapoints.)
We have a lot more statistics for flights VZ 316 and between Bangkok and Phuket.