Cheap flights from Sydney to Ko Samui from $453

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 20/7. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
13 Jul — 20 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 13 June 2026.

Sun 1/1120:05
SYD
-
USM
1 stop26h 45m
Scoot
Sat 7/1108:55
USM
-
SYD
1 stop29h 55m
Scoot
Deal found 12/6$635
Wed 28/1020:05
SYD
-
USM
1 stop15h 55m
Scoot
Wed 11/1108:55
USM
-
SYD
1 stop29h 55m
Scoot
Deal found 9/6$760
Tue 13/1021:35
SYD
-
USM
1 stop25h 15m
Scoot
Thu 22/1011:05
USM
-
SYD
1 stop29h 15m
Scoot
Deal found 13/6$788
Sun 1/1114:20
SYD
-
USM
1 stop30h 50m
Multiple Airlines
Sat 7/1108:15
USM
-
SYD
2 stops30h 35m
Multiple Airlines
Deal found 12/6$789
Fri 16/1014:00
SYD
-
USM
1 stop32h 50m
Multiple Airlines
Tue 20/1012:30
USM
-
SYD
2 stops27h 50m
Multiple Airlines
Deal found 8/6$806
Fri 16/1014:00
SYD
-
USM
1 stop32h 50m
Scoot
Tue 20/1011:05
USM
-
SYD
1 stop21h 40m
Scoot
Deal found 8/6$852
Mon 24/820:35
SYD
-
USM
2 stops23h 20m
Multiple Airlines
Fri 23/1009:15
USM
-
SYD
2 stops31h 05m
Multiple Airlines
Deal found 9/6$865
Fri 6/1114:20
SYD
-
USM
2 stops31h 10m
Multiple Airlines
Sat 21/1108:55
USM
-
SYD
1 stop29h 55m
Multiple Airlines
Deal found 10/6$875
Sat 12/920:35
SYD
-
USM
2 stops25h 40m
Multiple Airlines
Thu 17/909:15
USM
-
SYD
2 stops23h 30m
Multiple Airlines
Deal found 10/6$883
Tue 13/1021:35
SYD
-
USM
2 stops26h 50m
Multiple Airlines
Thu 22/1011:05
USM
-
SYD
1 stop29h 15m
Multiple Airlines
Deal found 13/6$885

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 13 June 2026.

Round-trip from

$865

One-way from

$453

Popular in

December

Cheapest in

October

Average price

$1,061
24/8-23/10
  • 24/8-23/10
  • 4 total stops
  • 54h 25m total
  • Sydney to Ko Samui
20/7
  • 20/7
  • 2 total stops
  • 27h 10m total
  • Sydney to Ko Samui
Highest demand for flights based on searches. 12% potential increase in price ($212 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($55 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 13 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

Tue 11/8

20:35-18:50

1 stop25h 15m

Ko Samui

Thu 13/8

08:40-11:45

1 stop24h 05m

$1,110

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 6/8

13:00-08:25

2 stops46h 25m

Ko Samui

Wed 19/8

08:40-11:45

1 stop24h 05m

$1,137

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 27/10

20:05-08:00

1 stop15h 55m

Ko Samui

Thu 29/10

12:00-18:50

1 stop26h 50m

$1,151

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 24/8

14:35-18:15

1 stop30h 40m

Ko Samui

Mon 7/9

13:30-06:05

1 stop13h 35m

$1,232

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 29/8

14:35-21:10

1 stop33h 35m

Ko Samui

Tue 8/9

13:30-06:05

1 stop13h 35m

$1,232

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 30/11

16:15-18:15

1 stop30h 00m

Ko Samui

Thu 10/12

16:25-07:55

1 stop11h 30m

$1,323
Fastest return journey

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 11/10

22:10-16:35

2 stops22h 25m

Ko Samui

Tue 20/10

09:15-07:25

2 stops18h 10m

$1,373

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 30/11

16:15-18:15

1 stop30h 00m

Ko Samui

Fri 11/12

16:25-07:55

1 stop11h 30m

$1,420

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 12/7

20:35-18:50

1 stop25h 15m

Ko Samui

Sun 19/7

11:05-19:20

1 stop29h 15m

$1,452

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 29/9

20:35-17:20

1 stop23h 45m

Ko Samui

Tue 6/10

13:50-11:00

2 stops17h 10m

$1,592

Flights are sorted by cheapest return flights first.

Deals found on 13/6

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, October is the cheapest month in which you can book a flight from Sydney to Ko Samui (average of $825). Flying from Sydney to Ko Samui in December is currently the most expensive (average of $1,498). 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 13 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.

Comfort

8.0

Food

7.8

Boarding

8.3

Entertainment

8.1

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Food

7.8

Boarding

8.3

Entertainment

8.1

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Food

7.8

Boarding

8.3

Entertainment

8.1

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Food

7.8

Boarding

8.3

Entertainment

8.1

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Food

7.8

Boarding

8.3

Entertainment

8.1

Overall

8.2

Crew

8.6

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.

Comfort

8.0

Food

7.8

Boarding

8.3

Entertainment

8.1

Overall

8.2

Crew

8.6

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 can get you from Sydney to Ko Samui in just under 23h 45m. Your travel time can differ by up to . The distance from Sydney to Ko Samui is about 7234 km.

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

    Scoot, at $605, 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 $305 on Scoot. Other airlines that offer cheap prices include Bangkok Airways from $653 and Thai Airways from $730 one-way.

  • Where are the most common stopover locations when flying from Sydney to Ko Samui?

  • What are some popular things to do or see while on a stopover in Singapore?

    If you're on a stopover in Singapore and looking for things to do, consider visiting Sentosa, Universal Studios Singapore, or Merlion. Sentosa, Universal Studios Singapore, and Merlion are located about 21.6 km, 21.6 km, and 16.9 km, respectively from Singapore Changi. Travellers can rent a car at Singapore Changi for an average daily rate of $117 to make sightseeing during their stopover a little easier.

  • Where are the least popular stopover locations for Sydney to Ko Samui flights?

  • 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, October is the cheapest month in which you can book a flight from Sydney to Ko Samui (average of $825). Flying from Sydney to Ko Samui in December is currently the most expensive (average of $1,498). 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

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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 13 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 13 June 2026.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$607Average$931FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Qantas AirwaysCheapest$988Average$1,258FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Singapore AirlinesCheapest$1,116Average$1,360FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Bangkok AirwaysCheapest$1,211Average$1,584FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,247Average$1,412FlexibilityNo 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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