The best day to arrive at Koh Samui is Monday and it would be best to avoid Sunday, as prices are on average 33.13% higher than on Monday. (Average prices, based on 12939 datapoints.)
MondayAUD 150
Mon
TuesdayAUD 169
Tue
WednesdayAUD 169
Wed
ThursdayAUD 163
Thu
FridayAUD 161
Fri
SaturdayAUD 165
Sat
SundayAUD 200
Sun
Analyse direct flights between Koh Samui and Phuket.