Flight Changi Airport departs from Singapore Changi Airport at 19:40 and arrives at Phuket Phuket International Airport at 20:40.
The flighttime is about 2h 00m. The distance travelled ("as the bird flies"): 646 Km. So the average speed is roughly 323 Km.
There is an 1 hour time difference between Singapore and Phuket
The best day to arrive at Singapore is Tuesday and it would be best to avoid Friday, as prices are on average 53.6% higher than on Tuesday. (Average prices, based on 579876 datapoints.)
We have a lot more statistics for flights JQ 537 and between Singapore and Phuket.