Cheap flights from Sydney to Ko Samui from $467

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
24 Jul — 31 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Ko Samui

Enter your travel dates to find the best prices.

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 24 June 2026.

Sat 24/1014:00
SYD
-
USM
1 stop31h 10m
Scoot
Sat 7/1108:55
USM
-
SYD
1 stop29h 55m
Scoot
Deal found 21/6$779
Sun 1/1113:25
SYD
-
USM
1 stop22h 35m
Scoot
Sun 8/1112:00
USM
-
SYD
1 stop26h 50m
Scoot
Deal found 19/6$818
Fri 23/1014:00
SYD
-
USM
1 stop31h 20m
Scoot
Sun 8/1108:55
USM
-
SYD
1 stop29h 55m
Scoot
Deal found 21/6$819
Sat 24/1021:35
SYD
-
USM
1 stop14h 25m
Scoot
Sun 8/1108:55
USM
-
SYD
1 stop29h 55m
Scoot
Deal found 21/6$821
Tue 13/1021:35
SYD
-
USM
1 stop25h 15m
Scoot
Tue 27/1008:55
USM
-
SYD
1 stop29h 55m
Scoot
Deal found 21/6$830
Fri 23/1021:35
SYD
-
USM
1 stop23h 45m
Scoot
Sat 7/1108:55
USM
-
SYD
1 stop23h 15m
Scoot
Deal found 21/6$841
Mon 23/1113:25
SYD
-
USM
1 stop22h 35m
Scoot
Thu 26/1119:45
USM
-
SYD
1 stop19h 05m
Scoot
Deal found 21/6$866
Sun 1/1113:25
SYD
-
USM
1 stop33h 25m
Multiple Airlines
Sun 8/1111:10
USM
-
SYD
2 stops27h 40m
Multiple Airlines
Deal found 19/6$893
Tue 15/920:35
SYD
-
USM
2 stops24h 25m
Multiple Airlines
Tue 29/912:30
USM
-
SYD
2 stops27h 50m
Multiple Airlines
Deal found 22/6$907
Sun 2/820:35
SYD
-
USM
1 stop25h 15m
Scoot
Mon 17/819:45
USM
-
SYD
1 stop13h 00m
Scoot
Deal found 23/6$955
Mon 12/1014:00
SYD
-
USM
1 stop24h 10m
Scoot
Mon 26/1019:45
USM
-
SYD
1 stop12h 25m
Scoot
Deal found 21/6$958
Mon 24/820:35
SYD
-
USM
2 stops24h 25m
Multiple Airlines
Sun 30/811:25
USM
-
SYD
2 stops28h 55m
Multiple Airlines
Deal found 19/6$969

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 24 June 2026.

Round-trip from

$779

One-way from

$467

Popular in

December

Cheapest in

March

Average price

$1,082
Scoot
  • Scoot
  • 24/10-7/11
  • 2 total stops
  • 61h 05m total
  • Sydney to Ko Samui
15/9
  • 15/9
  • 2 total stops
  • 26h 35m total
  • Sydney to Ko Samui
Highest demand for flights based on searches. 11% potential increase in price ($204 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($57 potential savings vs. average return price).
Average for round-trip flights in June 2026

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 24 June 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

Price

Cheapest return flight

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 8/8

20:35-18:50

1 stop25h 15m

Ko Samui

Sat 15/8

08:00-19:20

2 stops32h 20m

$1,034

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 5/8

20:35-14:40

2 stops21h 05m

Ko Samui

Wed 19/8

19:45-19:20

1 stop20h 35m

$1,109
Fastest return journey

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 25/10

20:05-08:00

1 stop15h 55m

Ko Samui

Thu 29/10

12:00-12:10

1 stop20h 10m

$1,156

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 20/7

20:35-20:25

2 stops26h 50m

Ko Samui

Mon 27/7

08:00-19:20

3 stops32h 20m

$1,292

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 24/10

15:35-18:15

1 stop30h 40m

Ko Samui

Mon 9/11

13:25-06:55

1 stop13h 30m

$1,336

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 22/7

14:35-21:10

1 stop33h 35m

Ko Samui

Thu 6/8

13:30-06:05

1 stop13h 35m

$1,470

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 25/10

21:50-21:05

2 stops27h 15m

Ko Samui

Thu 29/10

13:25-07:25

1 stop14h 00m

$1,564

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 25/10

18:45-21:05

2 stops30h 20m

Ko Samui

Thu 5/11

13:45-07:35

1 stop13h 50m

$1,565

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 6/8

13:00-07:45

1 stop21h 45m

Ko Samui

Thu 13/8

18:15-19:20

1 stop22h 05m

$1,648

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 29/9

10:10-07:10

2 stops24h 00m

Ko Samui

Tue 6/10

07:50-07:10

2 stops19h 20m

$1,738

Flights are sorted by cheapest return flights first.

Deals found on 20/6

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 return 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?

Booking 58 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to Ko Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Sydney to Ko Samui?

Currently, March is the cheapest month in which you can book a flight from Sydney to Ko Samui (average of $840). Flying from Sydney to Ko Samui in December is currently the most expensive (average of $1,522). 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 for a return flight from Sydney to Ko Samui?

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 24 June 2026.
Read through reviews of airlines operating flights from Sydney to Ko Samui, such as Singapore Airlines,Bangkok Airways, andThai Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

8.1

Crew

8.6

Comfort

8.0

Overall

8.2

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Entertainment

8.1

Crew

8.6

Comfort

8.0

Overall

8.2

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Entertainment

8.1

Crew

8.6

Comfort

8.0

Overall

8.2

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Entertainment

8.1

Crew

8.6

Comfort

8.0

Overall

8.2

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Entertainment

8.1

Crew

8.6

Comfort

8.0

Overall

8.2

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Entertainment

8.1

Crew

8.6

Comfort

8.0

Overall

8.2

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

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?

    Scoot and British Airways can get you from Sydney to Ko Samui in just under 15h 55m. Your travel time can differ by up to 14h 45m. The distance from Sydney to Ko Samui is about 7234 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Sydney to Ko Samui round-trip?

    Scoot, at $617, was found to be the cheapest airline from Sydney to Ko Samui.Alternate airlines to your destination round-trip include Qantas Airways and Singapore Airlines. Users have found that Scoot is 43% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Sydney to Ko Samui one-way?

    One-way options have recently been found by users for as low as $310 on Scoot. Other airlines that offer cheap prices include Bangkok Airways from $663 and Thai Airways from $741 one-way.

  • 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 holiday 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, March is the cheapest month in which you can book a flight from Sydney to Ko Samui (average of $840). Flying from Sydney to Ko Samui in December is currently the most expensive (average of $1,522). 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

Travelling 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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Fly from Sydney to Ko Samui on these airlines

Choose from the following airlines for your flight from Sydney to Ko Samui. Flights are based on user searches made on Cheapflights and were last updated on 24 June 2026.

Top 5 airlines flying from Sydney to Ko Samui

Discover the top 5 airlines 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 647,157 searches. Data last updated 24 June 2026.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$617Average$948FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Qantas AirwaysCheapest$1,002Average$1,262FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Singapore AirlinesCheapest$1,132Average$1,382FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Bangkok AirwaysCheapest$1,228Average$1,607FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,265Average$1,436FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Sydney to Ko Samui?

Cheapflights makes it easy to find Sydney to Ko Samui flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Sydney to Ko Samui?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ko Samui from Sydney.

Can Cheapflights find flights from Sydney to Ko Samui with no change fees?

Certainly. Search results for flights to Ko Samui from Sydney shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Sydney to Ko Samui become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ko Samui from Sydney today and book when prices fit your budget.

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