Departure-day prices · May 2028 Trat → Koh Samui
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Best time to visit Koh Samui — climate Jan: ~28°C daytime, 16 rainy days
28°
Jan Feb: ~29°C daytime, 15 rainy days
29°
Feb Mar: ~30°C daytime, 16 rainy days
30°
Mar Apr: ~31°C daytime, 18 rainy days
31°
Apr May: ~31°C daytime, 26 rainy days
31°
May Jun: ~31°C daytime, 19 rainy days
31°
Jun Jul: ~33°C daytime, 13 rainy days
33°
Jul Aug: ~31°C daytime, 21 rainy days
31°
Aug Sep: ~31°C daytime, 20 rainy days
31°
Sep Oct: ~30°C daytime, 29 rainy days
30°
Oct Nov: ~29°C daytime, 21 rainy days
29°
Nov Dec: ~29°C daytime, 15 rainy days
29°
Dec Best value: Mar — fares from €139 and ~30°C daytime.
Flights from Trat to Koh Samui start around €139 (typically 1 stop). Range seen recently: €139–147, based on 2 fares found by travellers.
Fly (from €139)
2h 10m duration
€139–147 recent fares
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Cheapest cached fares Trat → Koh Samui; typically 1 stop (e.g. PG). · Based on 2 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 6 – Jan 26
Bangkok Airways · 1 stop · 2h 05m
€468
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Dec 23 – Jan 27
Bangkok Airways · 1 stop · 2h 10m
€470
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Dec 22 – Jan 25
Bangkok Airways · 1 stop · 2h 15m
€478
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Jan 6 – Jan 18
Bangkok Airways · 1 stop · 2h 05m
€484
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Jan 6 – Jan 20
Bangkok Airways · 1 stop · 2h 05m
€492
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Jan 2 – Jan 22
Bangkok Airways · 1 stop · 2h 15m
€495
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Jan 2 – Jan 21
Bangkok Airways · 1 stop · 2h 15m
€502
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Dec 30 – Jan 29
Bangkok Airways · 1 stop · 2h 15m
€513
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Weather in Koh Samui
Wed
🌦️
29°
26°
💧99%
Thu
🌦️
29°
25°
💧85%
Fri
🌧️
27°
24°
💧87%
Sat
⛈️
28°
23°
💧96%
Sun
🌧️
28°
24°
💧96%
Mon
🌧️
26°
23°
💧100%
Tue
🌦️
27°
24°
💧96%
Where to stay in Koh Samui 3★+ hotels from €19/night (39 hotels sampled, ~3 weeks out).
COSI Samui Chaweng Beach
hotel · Koh Samui
from €19/night ★ 3
Escape Beach Resort
hotel · Koh Samui
from €27/night ★ 3
Montien House Chaweng Beach Resort
hotel · Koh Samui
from €28/night ★ 3
Good to know Time difference Same time zone
Time in the air 2h 05m
Things to do in Koh Samui Top-rated tours and tickets from €48 — 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).
Popular from Trat 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 2026-11-03. Some links earn Stayonomy a commission at no cost to you.
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