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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 days highlighted · darker = pricier · past days greyed out · cached one-way fares.
Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.
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.
Fares found by travellers in the last 48 hours — refreshed daily.
In Sep, Koh Samui typically sees ~31°C daytime highs and 20 rainy days.
3★+ hotels from €32/night (34 hotels sampled, ~3 weeks out).
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.
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.
Guide content from Wikivoyage contributors (CC BY-SA).
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.