How the cheapest fare moved
Oct 26: €135 €135
Oct 19
Oct 26
low €128 · high €183
Departure-day prices · September 2018 Hong Kong → Koh Samui
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Return-day prices · September 2018 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, 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: Oct — fares from €128 and ~30°C daytime.
Flights from Hong Kong to Koh Samui start around €128 (typically 1 stop). Range seen recently: €128–173, based on 20 fares found by travellers.
Fly (from €128)
3h 30m duration
€128–173 recent fares
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Cheapest cached fares Hong Kong → Koh Samui; typically 1 stop (e.g. UO). · Based on 20 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 28 – Nov 4
HK Express · 1 stop · 4h 15m
€355
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Nov 8 – Nov 15
HK Express · 1 stop · 4h 15m
€356
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Mar 4 – Mar 16
Thai Lion Air · 1 stop · 4h 20m
€356
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Jun 1 – Jun 10
HK Express · 1 stop · 4h 05m
€364
Book
Nov 12 – Nov 19
HK Express · 1 stop · 4h 15m
€369
Book
Nov 8 – Nov 13
HK Express · 1 stop · 4h 15m
€370
Book
Feb 23 – Mar 5
HK Express · 1 stop · 4h 10m
€378
Book
Nov 9 – Nov 30
HK Express · 1 stop · 4h 15m
€386
Book
Weather in Koh Samui
Mon
🌧️
27°
25°
💧91%
Tue
🌧️
27°
24°
💧89%
Wed
⛈️
26°
24°
💧99%
Thu
⛈️
28°
24°
💧97%
Fri
🌦️
28°
25°
💧93%
Sat
🌧️
29°
24°
💧92%
Sun
🌦️
29°
25°
💧81%
In Sep, Koh Samui typically sees ~30°C daytime highs and 15 rainy days.
Where to stay in Koh Samui 3★+ hotels from €23/night (38 hotels sampled, ~3 weeks out).
COSI Samui Chaweng Beach
hotel · Koh Samui
from €23/night ★ 3
Escape Beach Resort
hotel · Koh Samui
from €25/night ★ 3
Montien House Chaweng Beach Resort
hotel · Koh Samui
from €28/night ★ 3
Good to know Time difference -1h
Time in the air 4h 05m
Things to do in Koh Samui Top-rated tours and tickets from €22 — 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 2026-10-26. Some links earn Stayonomy a commission at no cost to you.
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