The best month to arrive at Koh Samui is November and the most expensive month to fly is August. (Average prices, based on 975 datapoints.)
The best day to arrive at Koh Samui is Wednesday and it would be best to avoid Friday, as prices are on average 76.67% higher than on Wednesday. (Average prices, based on 435 datapoints.)
At Koh Samui the most flights depart around 06:00. (Hourly flights, based on 1105 datapoints.)
From Koh Samui it is on average the cheapest to fly to Phuket and to Bangkok. (Average prices, based on 714 datapoints.)
From Koh Samui most of the flights depart to Bangkok, second best connected from Koh Samui is Phuket. (Daily flights, based on 53 datapoints.)