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Cheap flights from Australia to Ko Samui from $298

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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
26 Apr — 3 May1
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 27 March 2026.

Sat 2/505:35
PER
-
USM
1 stop14h 15m
Scoot
Mon 11/519:45
USM
-
PER
1 stop20h 25m
Scoot
Deal found 26/3$623
Sat 25/405:35
PER
-
USM
1 stop14h 15m
Scoot
Mon 11/519:45
USM
-
PER
1 stop20h 25m
Scoot
Deal found 25/3$626
Wed 13/505:15
PER
-
USM
2 stops16h 10m
Multiple Airlines
Wed 20/508:00
USM
-
PER
2 stops19h 15m
Multiple Airlines
Deal found 25/3$637
Tue 9/605:15
PER
-
USM
2 stops16h 10m
Multiple Airlines
Fri 19/615:25
USM
-
PER
2 stops27h 25m
Multiple Airlines
Deal found 25/3$644
Thu 14/505:15
PER
-
USM
2 stops15h 00m
Multiple Airlines
Thu 21/512:30
USM
-
PER
2 stops14h 45m
Multiple Airlines
Deal found 26/3$652
Sat 9/505:35
PER
-
USM
1 stop14h 15m
Scoot
Sat 16/508:40
USM
-
PER
1 stop18h 40m
Scoot
Deal found 25/3$667
Sun 10/505:35
PER
-
USM
1 stop12h 45m
Multiple Airlines
Sun 17/509:15
USM
-
PER
2 stops19h 35m
Multiple Airlines
Deal found 22/3$675
Sun 10/505:35
PER
-
USM
1 stop12h 45m
Scoot
Sun 17/508:40
USM
-
PER
1 stop22h 30m
Scoot
Deal found 25/3$683
Sat 2/505:35
PER
-
USM
1 stop14h 15m
Multiple Airlines
Mon 11/512:30
USM
-
PER
2 stops14h 45m
Multiple Airlines
Deal found 26/3$685
Fri 8/513:00
MEL
-
USM
1 stop32h 50m
Scoot
Thu 14/519:45
USM
-
MEL
1 stop21h 30m
Scoot
Deal found 22/3$691
Thu 7/513:00
MEL
-
USM
1 stop32h 50m
Scoot
Thu 14/519:45
USM
-
MEL
1 stop13h 00m
Scoot
Deal found 23/3$692
Tue 12/505:35
PER
-
USM
1 stop14h 15m
Scoot
Tue 19/519:45
USM
-
PER
1 stop20h 25m
Scoot
Deal found 24/3$704

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 27 March 2026.

Round-trip from

$623

One-way from

$298

Popular in

December

Cheapest in

October

Average price

$861
Scoot
  • Scoot
  • 2/5-11/5
  • 2 total stops
  • 34h 40m total
  • Australia to Ko Samui
Search Deals
Scoot
  • Scoot
  • 17/4
  • 1 total stop
  • 14h 15m total
  • Australia to Ko Samui
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($266 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($59 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 27 March 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

PerthKo Samui

PER - USM

PERUSM

Perth

Sun 10/5

05:35-17:20

1 stop12h 45m

Ko Samui

Sun 17/5

09:15-05:50

2 stops19h 35m

$675

PerthKo Samui

PER - USM

PERUSM

Perth

Thu 7/5

20:50-18:50

2 stops23h 00m

Ko Samui

Thu 14/5

08:40-04:15

2 stops18h 35m

$876

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 7/5

07:05-18:50

2 stops14h 15m

Ko Samui

Thu 14/5

08:40-06:25

2 stops19h 15m

$890

PerthKo Samui

PER - USM

PERUSM

Perth

Thu 7/5

05:35-18:50

1 stop14h 15m

Ko Samui

Thu 14/5

19:45-17:10

1 stop20h 25m

$939

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Fri 8/5

14:50-08:25

1 stop20h 35m

Ko Samui

Fri 15/5

17:55-20:15

2 stops23h 20m

$948

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Tue 5/5

16:40-18:50

2 stops29h 10m

Ko Samui

Wed 13/5

19:45-07:00

2 stops32h 15m

$977

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 18/5

09:55-07:45

1 stop22h 50m

Ko Samui

Wed 20/5

19:45-17:10

1 stop20h 25m

$988

PerthKo Samui

PER - USM

PERUSM

Perth

Sun 17/5

05:35-18:50

1 stop14h 15m

Ko Samui

Tue 19/5

19:45-17:10

1 stop20h 25m

$1,056

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Sun 17/5

00:30-18:00

2 stops20h 30m

Ko Samui

Mon 1/6

08:00-22:35

2 stops35h 35m

$1,065

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Sat 16/5

13:00-18:50

1 stop32h 50m

Ko Samui

Wed 20/5

19:45-11:45

1 stop13h 00m

$1,085

Flights are sorted by cheapest return flights first.

Deals found on 26/3

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, March is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $358). Flying from Australia to Ko Samui in December is currently the most expensive (average of $802). 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 27 March 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
1,484 reviews
Check prices

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Singapore Airlines
8.2
Very Good
1,484 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Bangkok Airways
8.1
Very Good
128 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Thai Airways
7.8
Good
394 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Qantas Airways
7.5
Good
1,011 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Scoot
6.7
Okay
322 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

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 $939, Scoot can have you in Ko Samui from Australia in 14h 15m. 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 $500 while deals on Thai Airways start at $628 one-way.

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

    While some choose either Melbourne Avalon - Ko Samui or Sydney Kingsford Smith - 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, March is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $358). Flying from Australia to Ko Samui in December is currently the most expensive (average of $802). 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 27 March 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 27 March 2026.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$466Average$796FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Singapore AirlinesCheapest$808Average$1,339FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Qantas AirwaysCheapest$915Average$1,352FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Bangkok AirwaysCheapest$1,199Average$1,428FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,212Average$1,427FlexibilityNo 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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