Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 08:05 and arrives at Phuket Phuket International Airport at 09:30.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 290 Km. So the average speed is roughly 205 Km.
The best day to arrive at Bangkok is Saturday and it would be best to avoid Monday, as prices are on average 721.06% higher than on Saturday. (Average prices, based on 22525516 datapoints.)
We have a lot more statistics for flights EK 4518 and between Bangkok and Phuket.