$296+ Cheap flights from Sydney (SYD) to Ko Samui (USM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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Find cheap flights from Sydney to Ko Samui with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Sydney to Ko Samui
Cheapest
Best
Last-minute
One-way
Cheapest flights from Sydney to Ko SamuiExplore the most affordable flight options available from Sydney to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
Explore the most affordable flight options available from Sydney to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:05 pm -
1 stop25h 05m
Tue 11/176:05 pm -
1 stop14h 05m
Deal found 9/15![Scoot logo]()
$447
This Mytrip deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:05 pm -
2 stops27h 45m
Tue 11/176:05 pm -
1 stop14h 05m
Deal found 9/18![Multiple Airlines logo]()
$537
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:05 pm -
1 stop25h 05m
Sun 11/812:00 pm -
1 stop20h 10m
Deal found 9/16![Scoot logo]()
$555
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:05 pm -
2 stops27h 45m
Sun 11/812:00 pm -
1 stop26h 50m
Deal found 9/16![Multiple Airlines logo]()
$593
Best flights from Sydney to Ko SamuiDiscover carefully curated flight deals from Sydney to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Sydney to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Scoot deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scoot is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:25 pm -
1 stop33h 25m
Sun 11/16:05 pm -
1 stop14h 05m
Deal found 9/16![Scoot logo]()
$821
This Qantas Airways deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:10 pm -
1 stop30h 05m
Tue 11/171:25 pm -
2 stops16h 05m
Deal found 9/16![Qantas Airways logo]()
$1,125
This Qantas Airways deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:35 am -
2 stops15h 35m
Fri 10/231:30 pm -
1 stop12h 40m
Deal found 9/17![Multiple Airlines logo]()
$1,156
This China Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:10 pm -
2 stops18h 25m
Sun 11/17:55 am -
2 stops24h 20m
Deal found 9/13![China Airlines logo]()
$1,329
This Qantas Airways deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:25 am -
2 stops18h 45m
Fri 10/234:25 pm -
2 stops16h 50m
Deal found 9/14![Qantas Airways logo]()
$1,366
This Qantas Airways deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:55 pm -
3 stops28h 10m
Tue 11/171:25 pm -
2 stops15h 55m
Deal found 9/18![Qantas Airways logo]()
$1,383
Last-minute flights from Sydney to Ko SamuiDiscover last-minute flight deals from Sydney to Ko Samui. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Sydney to Ko Samui. Data last updated September 18, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:35 pm -
1 stop25h 15m
Fri 10/237:45 pm -
1 stop13h 00m
Deal found 9/15![Scoot logo]()
$696
This FlightHub deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:25 pm -
2 stops23h 50m
Fri 10/239:00 pm -
2 stops33h 20m
Deal found 9/18![Multiple Airlines logo]()
$930
This Scoot deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scoot is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:25 pm -
1 stop33h 25m
Sun 11/16:05 pm -
1 stop14h 05m
Deal found 9/16![Scoot logo]()
$821
One-way flights from Sydney to Ko SamuiSearch for one-way flight options from Sydney to Ko Samui. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Sydney to Ko Samui. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Mytrip deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:05 pm -
2 stops27h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$296
This CheapOair deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:00 pm -
1 stop32h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Scoot logo]()
$298
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:05 pm -
1 stop25h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Scoot logo]()
$357
This FlightHub deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:25 pm -
2 stops26h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$538
This Scoot deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scoot is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:05 pm -
1 stop26h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Scoot logo]()
$615
Find flight deals from Sydney to Ko Samui
Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $447 (Booking.com) |
One-way from | $296 (Mytrip) |
Popular in | December |
Cheapest in | November |
Average price | $996 |
Cheapflights Fare Finder
Customize your flight search to find flights from Sydney to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Sydney to Ko Samui that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Sat 10/31
8:05 pm-7:50 pm
2 stops27h 45m
Ko Samui
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$296
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Mon 10/12
12:25 pm-11:15 am
2 stops26h 50m
Ko Samui
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$538
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Wed 12/2
8:05 pm-6:50 pm
1 stop26h 45m
Ko Samui
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$615
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Wed 10/28
1:25 pm-6:50 pm
1 stop33h 25m
Ko Samui
Sun 11/1
6:05 pm-12:10 pm
1 stop14h 05m
$821
Quickest round-trip
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Wed 1/20
7:40 pm-1:05 pm
3 stops21h 25m
Ko Samui
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$1,020
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Mon 11/2
4:10 pm-6:15 pm
1 stop30h 05m
Ko Samui
Tue 11/17
1:25 pm-9:30 am
2 stops16h 05m
$1,125
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Tue 10/13
9:35 am-9:10 pm
2 stops15h 35m
Ko Samui
Fri 10/23
1:30 pm-6:10 am
1 stop12h 40m
$1,156
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Wed 10/28
10:10 pm-12:35 pm
2 stops18h 25m
Ko Samui
Sun 11/1
7:55 am-12:15 pm
2 stops24h 20m
$1,329
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Tue 10/13
6:25 am-9:10 pm
2 stops18h 45m
Ko Samui
Fri 10/23
4:25 pm-1:15 pm
2 stops16h 50m
$1,366
SydneyKo Samui
SYD Sydney Kingsford Smith - USM Ko Samui
SYDUSM
Sydney Kingsford Smith
Sun 11/1
8:55 pm-9:05 pm
3 stops28h 10m
Ko Samui
Tue 11/17
1:25 pm-9:20 am
2 stops15h 55m
$1,383
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Sydney-Ko Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sydney-Ko Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sydney-Ko Samui flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Sydney-Ko Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sydney-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Sydney to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Sydney with our price prediction graph.
SYD-USM
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Sydney to Ko Samui
How far ahead should I book a flight from Sydney to Ko Samui?
The price you pay for your flight from Sydney to Ko Samui may vary depending on when you book. For the best chance of a lower fare, look to book 38 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Sydney to Ko Samui?
Currently, November is the cheapest month in which you can book a flight from Sydney to Ko Samui (average of $664). Flying from Sydney to Ko Samui in December is currently the most expensive (average of $1,107). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Sydney to Ko Samui?
Airfare is below average for this route at the moment.
Sydney to Ko Samui flights typically cost between $869 and $1,174 in November.The cheapest round-trip price found within the last 5 days was $447 on Scoot (Nov 1-Nov 17).
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 September 18, 2026.
Get a feel of what it's like to fly with Scoot from Sydney to Ko Samui by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
6.7
Crew
7.4
Food
5.8
Boarding
6.9
Comfort
6.5
Entertainment
5.2
Reviews
1 / 20
4.0
OkayAnonymous,Sep 2026
ATH - SIN
Overall
6.7
Crew
7.4
Food
5.8
Boarding
6.9
Comfort
6.5
Entertainment
5.2
Reviews
1 / 20
4.0
OkayAnonymous,Sep 2026
ATH - SIN
Related info for your journey
Find useful and relevant information for your journey from Sydney to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ko Samui?
Book flights to Ko Samui if you plan to visit one of these locationsKo Tao
Ko Pha Ngan
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Complete your trip
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Other flights to Ko Samui
Explore flights to Ko Samui departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Sydney and Ko Samui flights
Browse other Sydney and Ko Samui flight options. Last updated on September 18, 2026.
Other flights from Sydney
Browse through other flights departing from Sydney. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Sydney to Ko Samui
Discover the top airline that operate flights from Sydney to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$641 | Average$710 | FlexibilityNo cancel fee | On-timeN/A |