Chiang Mai to Koh Samui

1 ways to travelfastest 2h 20mfly from €115
Photo: Arun K / Unsplash

How the cheapest fare moved

Jul 25: €167 €167 Jul 21 Jul 25 low €115 · high €203

Departure-day prices · February 2027 Chiang Mai → Koh Samui

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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.

Return-day prices · February 2027 Koh Samui → Chiang Mai

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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.

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: Sep — fares from €115 and ~31°C daytime.

Flights from Chiang Mai to Koh Samui start around €115 (typically 1 stop). Range seen recently: €115–130, based on 5 fares found by travellers.

Fly (from €115)
2h 20mduration
€115–130recent fares
Book
Cheapest cached fares Chiang Mai → Koh Samui; typically 1 stop (e.g. DD). · Based on 5 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.

Aug 26 – Sep 8 Bangkok Airways · 1 stop · 2h 55m €243 Book
Jan 27 – Feb 18 Thai AirAsia · 1 stop · 2h 30m €271 Book
Jan 28 – Feb 19 Thai AirAsia · 1 stop · 2h 30m €271 Book
Jan 27 – Feb 19 Thai AirAsia · 1 stop · 2h 30m €276 Book
Jan 25 – Feb 19 Thai AirAsia · 1 stop · 2h 30m €277 Book
Jan 7 – Jan 10 Thai AirAsia · 1 stop · 2h 35m €369 Book

Weather in Koh Samui

Sun 🌦️ 30° 25° 💧75%
Mon 🌧️ 30° 25° 💧83%
Tue 🌧️ 29° 25° 💧94%
Wed ⛈️ 29° 25° 💧90%
Thu 🌧️ 28° 25° 💧76%
Fri 🌦️ 29° 25° 💧75%
Sat 🌦️ 30° 25° 💧75%

In Feb, Koh Samui typically sees ~30°C daytime highs and 12 rainy days.

Where to stay in Koh Samui

3★+ hotels from €32/night (34 hotels sampled, ~3 weeks out).

Crystal Lamai Hotel hotel · Koh Samui
from €32/night★ 3
COSI Samui Chaweng Beach hotel · Koh Samui
from €34/night★ 3
Code Samui Hotel hotel · Koh Samui
from €72/night★ 4

Good to know

Time differenceSame time zone
Time in the air2h 30m

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 2026-07-25. Some links earn Stayonomy a commission at no cost to you.