Chiang Mai to Koh Samui

1 ways to travelfastest 2h 20mfly from €101
Photo: Arun K / Unsplash

How the cheapest fare moved

Jul 31: €114 €114 Jul 25 Jul 31 low €112 · high €161

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

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Return-day prices · March 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: Jan — fares from €101 and ~28°C daytime.

Flights from Chiang Mai to Koh Samui start around €101 (typically 1 stop). Range seen recently: €101–120, based on 7 fares found by travellers.

Fly (from €101)
2h 20mduration
€101–120recent fares
Book
Cheapest cached fares Chiang Mai → Koh Samui; typically 1 stop (e.g. SL). · 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.

Jan 7 – Jan 10 Thai AirAsia · 1 stop · 2h 35m €369 Book
Dec 31 – Jan 5 Thai AirAsia · 1 stop · 2h 30m €372 Book
Aug 7 – Aug 18 Thai Lion Air · 1 stop · 2h 40m €408 Book
Dec 31 – Dec 31 Thai AirAsia · 1 stop · 2h 25m €451 Book

Weather in Koh Samui

Sat 🌦️ 32° 27° 💧41%
Sun 🌦️ 31° 26° 💧71%
Mon 🌦️ 31° 26° 💧76%
Tue 🌦️ 31° 26° 💧66%
Wed 🌦️ 31° 27° 💧68%
Thu 🌦️ 30° 26° 💧86%
Fri 🌦️ 31° 26° 💧82%

In Mar, Koh Samui typically sees ~30°C daytime highs and 15 rainy days.

Where to stay in Koh Samui

3★+ hotels from €35/night (37 hotels sampled, ~3 weeks out).

COSI Samui Chaweng Beach hotel · Koh Samui
from €35/night★ 3
Crystal Lamai Hotel hotel · Koh Samui
from €35/night★ 3
Secret Garden Beach Resort hotel · Koh Samui
from €73/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 €47 — 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 2026-07-31. Some links earn Stayonomy a commission at no cost to you.