From most locations, the cheapest flights to Ko Samui can be found during the month of November; however great deals can be found at other times.
Most of our users find that booking their departure to Ko Samui on a Wednesday is the cheapest. Conversely, departing on a Sunday seems to be the most expensive.
Typically, cheap prices to Ko Samui are most often found for noon flights. Cheap prices are less likely for morning flights.