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 12923 datapoints.)
MondayUS $ 102
Mon
TuesdayUS $ 115
Tue
WednesdayUS $ 115
Wed
ThursdayUS $ 111
Thu
FridayUS $ 110
Fri
SaturdayUS $ 112
Sat
SundayUS $ 136
Sun
Analyse direct flights between Koh Samui and Phuket.