$328+ Cheap flights to Ko Samui
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
Flights to Ko Samui in 2025
Find the latest flights to Ko Samui in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 2 July 2025.
Find flight deals to Ko Samui
Cheapest flights to Ko SamuiExplore the most affordable flight options available to Ko Samui. Find the lowest fares based on data from user searches, with prices last updated on 2 July 2025.
Explore the most affordable flight options available to Ko Samui. Find the lowest fares based on data from user searches, with prices last updated on 2 July 2025.
Cheapflights Fare Finder
Locate flights to Ko Samui that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 2 July 2025.
Use the filters below to find and compare flights to Ko Samui that are best for you.
Fly from
Route
Depart
Return
Price
SydneyKo Samui
SYD - USM
SYDUSM
Sydney Kingsford Smith
Thu 14/8
20:45-16:45
1 stop23h 00m
Ko Samui
Thu 21/8
08:45-11:35
1 stop23h 50m
SydneyKo Samui
SYD - USM
SYDUSM
Sydney Kingsford Smith
Sat 6/9
12:50-18:30
1 stop32h 40m
Ko Samui
Sun 14/9
07:00-11:15
2 stops25h 15m
SydneyKo Samui
SYD - USM
SYDUSM
Sydney Kingsford Smith
Mon 25/8
12:50-18:30
1 stop32h 40m
SydneyKo Samui
SYD - USM
SYDUSM
Sydney Kingsford Smith
Sun 26/10
10:15-10:25
2 stops28h 10m
Best time to book a flight to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight to Ko Samui
When is the best time to book a flight to Ko Samui?
Use this chart to determine the optimal time to book a return flight from Sydney to Ko Samui. Price data was last updated on 27 June 2025.
Booking 25 days in advance of your planned departure date is, on average, the best time to get cheap flights to Ko Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
How long is the flight to Ko Samui?
On average, a flight from Sydney to Ko Samui takes 22 hours 0 minutes. Flights to Ko Samui from other popular cities in Australia will vary in length. Below are a few examples of popular routes and their flight times.
When is the cheapest time to fly to Ko Samui?
Use this chart to determine the cheapest time to fly return from Sydney to Ko Samui. Price data was last updated on 16 December 2024.
Users looking for the lowest fares to Ko Samui should consider flying on Tuesday at midday, when prices are typically cheapest. Budget-minded travellers will want to avoid Saturday mornings, when prices are usually at their highest.
What are the most popular airlines that fly to Ko Samui?
The most popular airlines flying from Sydney to Ko Samui are Scoot, Singapore Airlines and Bangkok Airways.
What are the cheapest airlines that fly to Ko Samui?
The cheapest airlines flying from Sydney to Ko Samui are Scoot, Singapore Airlines and Bangkok Airways.
Rainfall in Ko Samui by month
Plan your trip to Ko Samui by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 mm per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.
Temperature in Ko Samui by month
Plan your trip to Ko Samui by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).
Reviews of airlines servicing Ko Samui
Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated 2 July 2025.
Read through reviews of airlines serving Thailand, such as Scoot. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Entertainment
Boarding
Food
Comfort
Overall
Reviews
Anonymous,Mar 2025
CSX - SIN
Crew
Entertainment
Boarding
Food
Comfort
Overall
Reviews
Anonymous,Mar 2025
CSX - SIN
FAQs about flying to Ko Samui
What is good to know if travelling to Koh Samui?- Fisherman’s Village is packed with restaurants, shops, market stalls and bars. There is an Irish bar, naturally, called The Irish Times. The Billabong Surf Club flies the Aussie flag.
- Hua Thanon is a Muslim village on the south coast. While there are some restaurants and a wonderful beach, seeing the fishermen at work and looking at their beautifully decorated boats is the best thing.
- The bonus to playing a round of golf on Koh Samui are the beautiful views. The Santiburu Samui Country Club on the north coast is an 18-hole, par-72 course. The Royal Samui Golf and Country Club is located next to Chaweng Beach and will be an 18-hole course. It’s nine holes at present. There are views of Lamai, Cheweng and the surrounding islands.
- Samui Shooting Sport is close to Chaweng about 200 metres from the Tesco Lotus superstore. It’s a great place to let off some steam with, perhaps, an AK-47. Elephant trekking is a gentler option. It’s a great, slow, way to go into Koh Samaui’s jungly heart.
- From the pier at Bophut beach you can take a boat to Ko Pha Ngan or take a day trip to the Ang Thong National Marine Park, which consists of 42 limestone islands with soaring mountains, sheer cliffs and dense, green forest.
- Hin Ta and Hin Yai – Grandfather Rock and Grandmother Rock – provide a quirky photo op. The rocks, south of Chaweng beach, are shaped, suggestively, like male and female genitalia.
- The Muay Thai stadium in Chaweng town is worth a visit to experience this traditional sport.
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