Flight Samui International Airport departs from Koh Samui Samui International Airport at 17:55 and arrives at Phuket Phuket International Airport at 18:55.
The flighttime is about 1h 00m. The distance travelled ("as the bird flies"): 196 Km. So the average speed is roughly 196 Km.
The best day to arrive at Koh Samui is Friday and it would be best to avoid Sunday, as prices are on average 43.77% higher than on Friday. (Average prices, based on 11880 datapoints.)
We have a lot more statistics for flights PG 257 and between Koh Samui and Phuket.