Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 15:35 and arrives at Phuket Phuket International Airport at 17:00.
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 Wednesday and it would be best to avoid Tuesday, as prices are on average 80.25% higher than on Wednesday. (Average prices, based on 22514715 datapoints.)
We have a lot more statistics for flights PG 1275 and between Bangkok and Phuket.