Cheap flights to Koh Samui
The cheapest one-way fare found this week from each departure city, in the currency we show for that city.
When it’s cheapest to fly to Koh Samui
October, November and January, going by fares found this week from 4 departure cities. Lower bars are cheaper.
- OctOctober 2026: about 5% above each city’s cheapest month
- NovNovember 2026: among the cheapest
- DecDecember 2026: about 27% above each city’s cheapest month
- JanJanuary 2027: about 21% above each city’s cheapest month
- FebFebruary 2027: about 31% above each city’s cheapest month
- MarMarch 2027: about 37% above each city’s cheapest month
- SepSeptember 2027: about 51% above each city’s cheapest month
Weather in Koh Samui
Average daily high and low and monthly precipitation, 1991–2020 normals.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 29° | 29° | 30° | 32° | 33° | 33° | 32° | 32° | 32° | 31° | 30° | 29° |
| Low °C | 24° | 25° | 25° | 26° | 26° | 25° | 25° | 25° | 25° | 24° | 24° | 24° |
| Precipitation mm | 127 | 64 | 116 | 83 | 132 | 134 | 117 | 102 | 118 | 295 | 445 | 263 |
Source: Ko Samui on Wikipedia, CC BY-SA 4.0.
Arriving in Koh Samui
Flights land at Koh Samui (USM, in the city).
Airport transfer
Car hire
Things to do in Koh Samui
Popular experiences on Viator, as Viator ranks them. “From” is the lowest price per person; the price for your date and group can differ.
Mobile data in Thailand
A travel eSIM for Thailand costs from $4. Install it before you fly; most plans start when you first connect in the destination.