The best day to arrive at Koh Samui is Friday and it would be best to avoid Monday, as prices are on average 38.64% higher than on Friday. (Average prices, based on 12937 datapoints.)
MondayUS $ 152
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.