How the cheapest fare moved
Aug 20: €176 €176
Aug 14
Aug 20
low €172 · high €209
Departure-day prices · August 2025 Hong Kong → Koh Samui
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Return-day prices · August 2025 Koh Samui → Hong Kong
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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, 15 rainy days
30°
Mar Apr: ~31°C daytime, 18 rainy days
31°
Apr May: ~30°C daytime, 25 rainy days
30°
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: Nov — fares from €158 and ~29°C daytime.
Flights from Hong Kong to Koh Samui start around €158 (typically 1 stop). Range seen recently: €158–182, based on 12 fares found by travellers.
Fly (from €158)
3h 50m duration
€158–182 recent fares
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Cheapest cached fares Hong Kong → Koh Samui; typically 1 stop (e.g. SL). · Based on 12 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.
Oct 26 – Nov 7
HK Express · 1 stop · 4h 15m
€332
Book
Oct 22 – Oct 29
Thai Lion Air · 1 stop · 3h 50m
€341
Book
Nov 12 – Nov 18
Thai Lion Air · 1 stop · 3h 55m
€346
Book
Oct 23 – Nov 3
Thai Lion Air · 1 stop · 3h 50m
€350
Book
Oct 24 – Nov 6
HK Express · 1 stop · 4h 00m
€371
Book
Oct 27 – Nov 6
HK Express · 1 stop · 4h 10m
€374
Book
Nov 16 – Nov 22
Thai Lion Air · 1 stop · 4h 25m
€380
Book
Jan 7 – Jan 28
HK Express · 1 stop · 4h 10m
€380
Book
Weather in Koh Samui
Fri
☁️
32°
27°
💧58%
Sat
🌦️
32°
27°
💧63%
Sun
🌦️
31°
26°
💧83%
Mon
🌦️
30°
25°
💧76%
Tue
🌧️
31°
26°
💧76%
Wed
🌦️
31°
26°
💧61%
Thu
🌦️
29°
25°
💧59%
In Aug, Koh Samui typically sees ~30°C daytime highs and 27 rainy days.
Where to stay in Koh Samui 3★+ hotels from €29/night (39 hotels sampled, ~3 weeks out).
COSI Samui Chaweng Beach
hotel · Koh Samui
from €29/night ★ 3
Escape Beach Resort
hotel · Koh Samui
from €31/night ★ 3
Montien House Chaweng Beach Resort
hotel · Koh Samui
from €35/night ★ 3
Good to know Time difference -1h
Time in the air 3h 50m
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).
Popular from Hong Kong 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 2026-08-20. Some links earn Stayonomy a commission at no cost to you.
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