Flight Samui International Airport departs from Koh Samui Samui International Airport at 10:05 and arrives at Bangkok Suvarnabhumi Airport at 11:20.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 113 Km. So the average speed is roughly 90 Km.
The best day to arrive at Koh Samui is Wednesday and it would be best to avoid Tuesday, as prices are on average 55.94% higher than on Wednesday. (Average prices, based on 1626825 datapoints.)
We have a lot more statistics for flights PG 124 and between Koh Samui and Bangkok.
