Chiang Mai to Koh Samui

1 ways to travelfastest 2h 15mfly from €105
Photo: Arun K / Unsplash

How the cheapest fare moved

Sep 18: €107 €107 Sep 11 Sep 18 low €105 · high €165

Departure-day prices · January 2026 Chiang Mai → Koh Samui

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Return-day prices · January 2026 Koh Samui → Chiang Mai

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Best time to visit Koh Samui — climate

Jan: ~28°C daytime, 16 rainy days 28° JanFeb: ~29°C daytime, 15 rainy days 29° FebMar: ~30°C daytime, 15 rainy days 30° MarApr: ~31°C daytime, 18 rainy days 31° AprMay: ~30°C daytime, 25 rainy days 30° MayJun: ~31°C daytime, 19 rainy days 31° JunJul: ~33°C daytime, 13 rainy days 33° JulAug: ~31°C daytime, 21 rainy days 31° AugSep: ~31°C daytime, 20 rainy days 31° SepOct: ~30°C daytime, 29 rainy days 30° OctNov: ~29°C daytime, 21 rainy days 29° NovDec: ~29°C daytime, 15 rainy days 29° Dec

Best value: Oct — fares from €105 and ~30°C daytime.

Flights from Chiang Mai to Koh Samui start around €105 (typically 1 stop). Range seen recently: €105–112, based on 7 fares found by travellers.

Fly (from €105)
2h 15mduration
€105–112recent fares
Book
Cheapest cached fares Chiang Mai → Koh Samui; typically 1 stop (e.g. DD). · Based on 7 fares found by travellers in the last 48h

Cheapest round trips to Koh Samui

Fares found by travellers in the last 48 hours — refreshed daily.

Nov 30 – Dec 3 Nok Air · 1 stop · 2h 25m €219 Book
Feb 28 – Mar 3 Thai AirAsia · 1 stop · 2h 50m €225 Book
Dec 31 – Jan 2 Nok Air · 1 stop · 2h 50m €432 Book
Jan 4 – Jan 10 Nok Air · 1 stop · 2h 45m €448 Book

Weather in Koh Samui

Fri 🌧️ 29° 25° 💧94%
Sat 🌧️ 30° 25° 💧94%
Sun ⛈️ 28° 25° 💧84%
Mon 🌦️ 30° 25° 💧75%
Tue 🌦️ 29° 25° 💧71%
Wed 🌧️ 29° 25° 💧80%
Thu ⛈️ 29° 25° 💧75%

In Jan, Koh Samui typically sees ~28°C daytime highs and 16 rainy days.

Where to stay in Koh Samui

3★+ hotels from €27/night (39 hotels sampled, ~3 weeks out).

COSI Samui Chaweng Beach hotel · Koh Samui
from €27/night★ 3
Escape Beach Resort hotel · Koh Samui
from €29/night★ 3
Villas Residence By Weekender Resort hotel · Koh Samui
from €35/night★ 3

Good to know

Time differenceSame time zone
Time in the air2h 25m

Things to do in Koh Samui

Top-rated tours and tickets from €21 — book ahead for the popular ones.

Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.

About Koh Samui

Ko Samui (เกาะสมุย), often called just Samui (สมุย) is an island of great natural beauty and variety in the Gulf of Thailand. The palm-fringed shoreline and coconut and fruit cultivation of the coastal lowlands rise to a central granite massif, the slopes of which are cloaked in virgin rainforest.

Read the full Koh Samui guide

Guide content from Wikivoyage contributors (CC BY-SA).

Round out the trip

Popular from Chiang Mai

Cheapest destinations travellers searched recently — refreshed daily.

Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo; exchange rates: ECB reference. Data updated 2026-09-18. Some links earn Stayonomy a commission at no cost to you.