Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 22:15 and arrives at Phuket Phuket International Airport at 23:45.
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 Monday and it would be best to avoid Saturday, as prices are on average 35.26% higher than on Monday. (Average prices, based on 21550386 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 900 datapoints.)
We have a lot more statistics for flights VZ 312 and between Bangkok and Phuket.