Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 17:30 and arrives at Phuket Phuket International Airport at 19:00.
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 Wednesday, as prices are on average 102.24% higher than on Tuesday. (Average prices, based on 21436651 datapoints.)
We have a lot more statistics for flights TG 217 and between Bangkok and Phuket.