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Ko Samui

$249+ Cheap flights from Sydney (SYD) to Ko Samui (USM)

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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Sydney to Ko Samui

Cheapest flights from Sydney to Ko Samui
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 January 29, 2026.

This Booking.com deal was found by Cheapflights users on 1/26. 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.
Fri 3/138:05 pm
SYD
-
USM
1 stop26h 45m
Scoot
Fri 3/207:45 pm
USM
-
SYD
1 stop19h 05m
Scoot
Deal found 1/26$568
This Booking.com deal was found by Cheapflights users on 1/26. 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.
Fri 3/138:05 pm
SYD
-
USM
1 stop26h 45m
Multiple Airlines
Fri 3/203:50 pm
USM
-
SYD
2 stops18h 50m
Multiple Airlines
Deal found 1/26$632
This Scoot deal was found by Cheapflights users on 1/26. 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.
Sun 5/178:35 pm
SYD
-
USM
1 stop23h 45m
Scoot
Thu 5/218:40 am
USM
-
SYD
1 stop31h 40m
Scoot
Deal found 1/26$756
This Malaysia Airlines deal was found by Cheapflights users on 1/27. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2110:10 pm
SYD
-
USM
2 stops18h 35m
Multiple Airlines
Sun 6/283:25 pm
USM
-
SYD
2 stops15h 35m
Multiple Airlines
Deal found 1/27$871
This China Airlines deal was found by Cheapflights users on 1/26. 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.
Sun 5/1710:10 pm
SYD
-
USM
2 stops17h 35m
China Airlines
Thu 5/212:00 pm
USM
-
SYD
2 stops17h 45m
China Airlines
Deal found 1/26$969
This Qantas Airways deal was found by Cheapflights users on 1/26. 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 5/179:50 am
SYD
-
USM
1 stop14h 45m
Qantas Airways
Thu 5/211:30 pm
USM
-
SYD
2 stops16h 50m
Qantas Airways
Deal found 1/26$1,015

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$568
(Booking.com)

One-way from

$249
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$906
Provider with most accurate pricing for Sydney Kingsford Smith-Ko Samui flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Ko Samui flights.
Search Deals
From Sydney Kingsford Smith to Ko Samui
Search Deals
One-way flight from Sydney Kingsford Smith to Ko Samui
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Sydney to Ko Samui that are best for you.

Fly from

Sydney

Fly to

Ko Samui

Route

Depart

Return

Price

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 3/13

8:05 pm-6:50 pm

1 stop26h 45m

Ko Samui

Fri 3/20

7:45 pm-6:50 pm

1 stop19h 05m

$568

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 5/17

8:35 pm-5:20 pm

1 stop23h 45m

Ko Samui

Thu 5/21

8:40 am-7:20 pm

1 stop31h 40m

$756

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 3/13

1:35 pm-6:25 pm

3 stops32h 50m

Ko Samui

Fri 3/20

3:50 pm-2:40 pm

2 stops18h 50m

$805

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 6/21

10:10 pm-1:45 pm

2 stops18h 35m

Ko Samui

Sun 6/28

3:25 pm-10:00 am

2 stops15h 35m

$871

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 5/17

10:10 pm-12:45 pm

2 stops17h 35m

Ko Samui

Thu 5/21

2:00 pm-10:45 am

2 stops17h 45m

$969

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 5/17

9:50 am-9:35 pm

1 stop14h 45m

Ko Samui

Thu 5/21

1:30 pm-9:20 am

2 stops16h 50m

$1,015

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 5/1

8:35 pm-6:50 pm

1 stop25h 15m

$249

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 7/15

8:35 pm-7:45 am

1 stop14h 10m

$256

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 5/1

1:00 pm-7:10 am

2 stops45h 10m

$271

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 2/24

8:05 pm-6:50 pm

1 stop26h 45m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 16 results
1
2
  • 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.
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?

Use this chart to determine the optimal time to book a round-trip flight from Sydney to Ko Samui. Price data was last updated on January 23, 2026.

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 50 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 $403). Flying from Sydney to Ko Samui in December is currently the most expensive (average of $684). 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.

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 January 29, 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.
Scoot
6.7
Okay
316 reviews

Comfort

6.6

Crew

7.4

Boarding

6.9

Entertainment

5.2

Overall

6.7

Food

5.8

Reviews

1 / 17
10.0
Excellent

Gary,Oct 2025

CEB - SIN

We didn’t have food or entertainment but the flight was very good .will fly with them again.
Scoot
6.7
Okay
316 reviews
Scoot
6.7
Okay
316 reviews

Comfort

6.6

Crew

7.4

Boarding

6.9

Entertainment

5.2

Overall

6.7

Food

5.8

Reviews

1 / 17
10.0
Excellent

Gary,Oct 2025

CEB - SIN

We didn’t have food or entertainment but the flight was very good .will fly with them again.

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.

  • How long is the flight from Sydney to Ko Samui?

    For as low as $568, Scoot can have you in Ko Samui from Sydney in 26h 45m. Airlines will cover a distance of 4495 mi.

  • What is the cheapest airline to fly from Sydney to Ko Samui round-trip?

    Our cheapest airline available from Sydney to Ko Samui is Scoot. Our recent data shows that you can find tickets from as low as $494 on this airline. Scoot is currently priced 30% below the average price you’ll pay for this route.

  • Can I find deals for flights from Sydney to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Sydney to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Ko Samui.

  • Can I find deals for business class flights from Sydney to Ko Samui?

    Yes. Cheapflights offers flight deals from Sydney to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $403). Flying from Sydney to Ko Samui in December is currently the most expensive (average of $684). 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.

See more FAQs

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sydney to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Suvarnabhumi flights
Sydney to Phuket City flights
Sydney to Chiang Mai flights

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 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$494Average$910FlexibilityNo cancel feeOn-timeN/A

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