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Cheap flights from Australia to Ko Samui from $319

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
8 Aug — 15 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Australia to Ko Samui
Explore the most affordable flight options available from Australia to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 July 2026.

Sat 1/805:35
PER
-
USM
1 stop27h 10m
Scoot
Mon 31/818:15
USM
-
PER
1 stop21h 55m
Scoot
Deal found 5/7$677
Sat 10/1021:35
SYD
-
USM
1 stop14h 10m
Scoot
Thu 5/1119:45
USM
-
SYD
1 stop19h 05m
Scoot
Deal found 7/7$681
Mon 3/818:25
PER
-
USM
1 stop14h 20m
Scoot
Tue 18/819:45
USM
-
PER
1 stop20h 25m
Scoot
Deal found 7/7$697
Sat 22/805:35
PER
-
USM
2 stops27h 50m
Multiple Airlines
Sat 29/819:45
USM
-
PER
1 stop22h 45m
Multiple Airlines
Deal found 4/7$698
Mon 3/818:25
PER
-
USM
1 stop14h 20m
Scoot
Fri 21/819:45
USM
-
PER
1 stop20h 25m
Scoot
Deal found 8/7$713
Mon 24/818:25
PER
-
USM
2 stops24h 35m
Multiple Airlines
Mon 31/818:15
USM
-
PER
1 stop21h 55m
Multiple Airlines
Deal found 5/7$726
Sat 7/1122:35
MEL
-
USM
1 stop24h 15m
Scoot
Thu 12/1118:05
USM
-
MEL
1 stop22h 45m
Scoot
Deal found 4/7$730
Mon 7/921:35
MEL
-
USM
2 stops24h 40m
Multiple Airlines
Tue 15/912:30
USM
-
MEL
2 stops28h 50m
Multiple Airlines
Deal found 7/7$734
Fri 21/805:35
PER
-
USM
1 stop27h 10m
Scoot
Wed 26/819:45
USM
-
PER
1 stop20h 25m
Scoot
Deal found 8/7$737
Tue 25/805:35
PER
-
USM
2 stops31h 20m
Multiple Airlines
Mon 31/818:15
USM
-
PER
1 stop9h 05m
Multiple Airlines
Deal found 7/7$740
Mon 3/818:25
PER
-
USM
1 stop25h 25m
Multiple Airlines
Fri 21/809:15
USM
-
PER
2 stops18h 05m
Multiple Airlines
Deal found 8/7$746
Tue 18/818:25
PER
-
USM
2 stops27h 00m
Multiple Airlines
Wed 26/819:45
USM
-
PER
1 stop20h 25m
Multiple Airlines
Deal found 5/7$749

Find flight deals from Australia to Ko Samui

Keep the following information in mind while searching for Australia to Ko Samui flight deals. Data was last updated 9 July 2026.

Round-trip from

$677

One-way from

$319

Popular in

December

Cheapest in

March

Average price

$1,226
Scoot
  • Scoot
  • 1/8-31/8
  • 2 total stops
  • 49h 05m total
  • Australia to Ko Samui
Search Deals
6/9
  • 6/9
  • 2 total stops
  • 29h 55m total
  • Australia to Ko Samui
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($206 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($55 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Australia 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 9 July 2026.
Use the filters below to find and compare flights from Australia 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

Thu 20/8

13:00-18:50

1 stop32h 50m

Ko Samui

Sat 5/9

18:15-11:45

1 stop14h 30m

$778

PerthKo Samui

PER - USM

PERUSM

Perth

Tue 18/8

18:25-07:45

1 stop14h 20m

Ko Samui

Wed 26/8

19:45-17:10

1 stop20h 25m

$794

PerthKo Samui

PER - USM

PERUSM

Perth

Thu 20/8

18:25-18:50

1 stop25h 25m

Ko Samui

Mon 31/8

18:15-17:10

1 stop21h 55m

$801

PerthKo Samui

PER - USM

PERUSM

Perth

Tue 11/8

05:35-18:50

1 stop14h 15m

Ko Samui

Tue 25/8

18:15-17:10

1 stop21h 55m

$834

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 5/8

20:35-07:45

1 stop14h 10m

Ko Samui

Tue 18/8

19:45-11:45

1 stop13h 00m

$921

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 5/8

20:35-13:55

2 stops20h 20m

Ko Samui

Wed 19/8

19:45-19:20

1 stop20h 35m

$977

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 20/7

20:35-07:45

1 stop14h 10m

Ko Samui

Mon 3/8

18:15-19:20

1 stop22h 05m

$984

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Sun 2/8

21:35-18:50

1 stop24h 15m

Ko Samui

Fri 14/8

18:15-11:45

1 stop14h 30m

$994

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Wed 5/8

14:55-07:45

2 stops19h 50m

Ko Samui

Wed 19/8

19:45-22:50

2 stops24h 05m

$1,073

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Tue 11/8

08:55-17:20

2 stops34h 55m

Ko Samui

Tue 18/8

18:15-21:55

2 stops25h 10m

$1,079

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Australia to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Australia 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 Australia to Ko Samui

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

Currently, September is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $185). Flying from Australia to Ko Samui in December is currently the most expensive (average of $655). 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 far ahead should I book a flight from Australia to Ko Samui?

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Australia to Ko Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 9 July 2026.
Get a feel of what it's like to fly with Singapore Airlines,Bangkok Airways, andThai Airways from Australia 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.
Singapore Airlines
8.2
Very Good
1,565 reviews
Check prices

Overall

8.2

Boarding

8.3

Crew

8.6

Food

7.8

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Singapore Airlines
8.2
Very Good
1,565 reviews
Singapore Airlines
8.2
Very Good
1,565 reviews
Check prices

Overall

8.2

Boarding

8.3

Crew

8.6

Food

7.8

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Bangkok Airways
8.1
Very Good
133 reviews
Singapore Airlines
8.2
Very Good
1,565 reviews
Check prices

Overall

8.2

Boarding

8.3

Crew

8.6

Food

7.8

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Thai Airways
7.9
Good
409 reviews
Singapore Airlines
8.2
Very Good
1,565 reviews
Check prices

Overall

8.2

Boarding

8.3

Crew

8.6

Food

7.8

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Qantas Airways
7.5
Good
1,058 reviews
Singapore Airlines
8.2
Very Good
1,565 reviews
Check prices

Overall

8.2

Boarding

8.3

Crew

8.6

Food

7.8

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Scoot
6.7
Okay
325 reviews
Singapore Airlines
8.2
Very Good
1,565 reviews
Check prices

Overall

8.2

Boarding

8.3

Crew

8.6

Food

7.8

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Related info for your journey

Find useful and relevant information for your journey from Australia to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ko Samui from Australia?

    If you book a flight to Ko Samui from Australia, you will be flying to Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 3.3 km from the centre of Ko Samui.

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

    For as low as $1,183, Scoot can have you in Ko Samui from Australia in 31h. There are 4910 km between Australia and Ko Samui. Both multi-stop and direct flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Scoot, which is currently one of the cheapest options available, starting at $255. Singapore Airlines flights start at $499 while deals on Thai Airways start at $702 one-way.

  • What are the most popular routes from Australia to Ko Samui?

    While some choose either Sydney Kingsford Smith - Ko Samui or Brisbane - Ko Samui, Melbourne - Ko Samui is the most popular route from Australia to Ko Samui.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Australia 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 Australia to Ko Samui?

    Currently, September is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $185). Flying from Australia to Ko Samui in December is currently the most expensive (average of $655). 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 Australia to Ko Samui on these airlines

Choose from the following airlines for your flight from Australia to Ko Samui. Flights are based on user searches made on Cheapflights and were last updated on 9 July 2026.
Singapore Airlines flights from Australia to Ko Samui
Thai Airways flights from Australia to Ko Samui

Top 5 airlines flying from Australia to Ko Samui

Discover the top 5 airlines that operate flights from Australia 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 9 July 2026.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$473Average$899FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Qantas AirwaysCheapest$914Average$1,300FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Singapore AirlinesCheapest$942Average$1,456FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Bangkok AirwaysCheapest$1,230Average$1,610FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,267Average$1,466FlexibilityNo 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 Australia to Ko Samui?

Cheapflights helps you search for flights from Australia to Ko Samui via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Australia 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 Australia.

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

Need flexible booking options for your flight to Ko Samui from Australia? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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