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Cheap flights from Australia to Ko Samui from $270

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 11 November 2025.

Round-trip from

$518

One-way from

$270

Popular in

December

Cheapest in

October

Average price

$904
Scoot
  • Scoot
  • 2/5-10/5
  • 2 total stops
  • 21h 45m total
  • Australia to Ko Samui
Search Deals
Scoot
  • Scoot
  • 6/3
  • 1 total stop
  • 14h 15m total
  • Australia to Ko Samui
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($323 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($64 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 11 November 2025.

Sat 22/1105:35PER - USM
1 stop27h 25mScoot
Fri 28/1108:55USM - PER
1 stop18h 20mScoot
Deal found 10/11$585
Sat 22/1105:35PER - USM
1 stop27h 25mMultiple Airlines
Fri 28/1108:15USM - PER
2 stops19h 15mMultiple Airlines
Deal found 10/11$587
Sat 15/1105:35PER - USM
1 stop14h 15mScoot
Tue 2/1208:55USM - PER
1 stop18h 20mScoot
Deal found 9/11$640
Sun 16/1105:35PER - USM
1 stop30h 25mScoot
Sun 23/1118:05USM - PER
1 stop9h 10mScoot
Deal found 8/11$674
Sat 15/1105:35PER - USM
1 stop30h 25mMultiple Airlines
Tue 2/1208:15USM - PER
2 stops19h 15mMultiple Airlines
Deal found 9/11$751
Sun 16/1105:35PER - USM
1 stop14h 15mMultiple Airlines
Sun 23/1119:45USM - PER
2 stops31h 45mMultiple Airlines
Deal found 8/11$755
Mon 17/1120:05SYD - USM
1 stop26h 45mScoot
Sun 30/1108:55USM - SYD
1 stop29h 55mScoot
Deal found 8/11$755
Sat 15/1120:05SYD - USM
1 stop25h 05mScoot
Sat 22/1108:55USM - SYD
1 stop29h 55mScoot
Deal found 10/11$758
Thu 13/1114:20SYD - USM
1 stop32h 30mScoot
Thu 20/1108:55USM - SYD
1 stop29h 55mScoot
Deal found 8/11$761
Fri 14/1120:05SYD - USM
1 stop18h 55mScoot
Fri 21/1108:55USM - SYD
1 stop29h 55mScoot
Deal found 9/11$763
Wed 19/1113:10MEL - USM
1 stop22h 50mScoot
Sun 30/1108:55USM - MEL
1 stop32h 25mScoot
Deal found 9/11$823
Thu 20/1113:10MEL - USM
1 stop25h 50mScoot
Mon 24/1119:45USM - MEL
1 stop21h 35mScoot
Deal found 9/11$852

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 11 November 2025.
Use the filters below to find and compare flights from Australia to Ko Samui that are best for you.

Fly from

Australia

Fly to

Ko Samui

Route

Depart

Return

Price

PerthKo Samui

PER - USM

PERUSM

Perth

Sat 22/11

05:35-08:00

1 stop27h 25m

Ko Samui

Fri 28/11

08:55-04:15

1 stop18h 20m

$585

PerthKo Samui

PER - USM

PERUSM

Perth

Sat 22/11

05:35-08:00

1 stop27h 25m

Ko Samui

Fri 28/11

08:15-04:30

2 stops19h 15m

$587

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Sat 18/4

21:30-11:10

1 stop16h 40m

Ko Samui

Sat 25/4

08:45-20:15

1 stop32h 30m

$789

PerthKo Samui

PER - USM

PERUSM

Perth

Sat 7/3

05:15-18:25

2 stops14h 10m

Ko Samui

Sat 21/3

08:15-04:15

3 stops19h 00m

$795

PerthKo Samui

PER - USM

PERUSM

Perth

Fri 1/5

01:20-14:50

2 stops14h 30m

Ko Samui

Sun 10/5

08:45-20:35

1 stop10h 50m

$816

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 14/11

07:15-08:00

2 stops28h 45m

Ko Samui

Fri 21/11

18:05-18:50

1 stop20h 45m

$902

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 15/11

07:15-08:00

2 stops28h 45m

Ko Samui

Sat 22/11

08:15-18:50

2 stops30h 35m

$960

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Mon 20/4

16:40-07:50

2 stops18h 10m

Ko Samui

Mon 27/4

17:40-16:05

2 stops19h 25m

$966

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 20/4

12:25-18:15

1 stop30h 50m

Ko Samui

Thu 30/4

08:20-00:40

1 stop15h 20m

$1,045

BrisbaneKo Samui

BNE - USM

BNEUSM

Brisbane

Tue 5/5

13:10-07:50

2 stops21h 40m

Ko Samui

Wed 13/5

18:25-09:30

1 stop12h 05m

$1,046

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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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, October is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $466). Flying from Australia to Ko Samui in December is currently the most expensive (average of $815). 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.

What is the cheapest time of day to fly from AU to USM?

Find hourly flight availability from Australia to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 November 2025.

One of the essential ways to save on airfare from Australia to Ko Samui is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 26% on airfare.

What is the cheapest day to fly from Australia to Ko Samui?

Use this chart to determine the cheapest time to fly return from Australia to Ko Samui. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Australia to Ko Samui flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 11 November 2025.
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
8.1
Very Good
1,396 reviews
Check prices

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very Good
1,396 reviews
Singapore Airlines
8.1
Very Good
1,396 reviews
Check prices

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Bangkok Airways
8.0
Very Good
117 reviews
Singapore Airlines
8.1
Very Good
1,396 reviews
Check prices

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Thai Airways
7.8
Good
361 reviews
Singapore Airlines
8.1
Very Good
1,396 reviews
Check prices

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Qantas Airways
7.5
Good
933 reviews
Singapore Airlines
8.1
Very Good
1,396 reviews
Check prices

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Scoot
6.7
Okay
309 reviews
Singapore Airlines
8.1
Very Good
1,396 reviews
Check prices

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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 $1,231, Scoot can have you in Ko Samui from Australia in 17h 10m. There are 6384 km between Australia and Ko Samui. Both multi-stop and direct flights can be found to your destination and back.

  • 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, October is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $466). Flying from Australia to Ko Samui in December is currently the most expensive (average of $815). 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 11 November 2025.
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 11 November 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$496Average$855FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Singapore AirlinesCheapest$825Average$1,329FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Qantas AirwaysCheapest$937Average$1,644FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Bangkok AirwaysCheapest$1,164Average$1,391FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,285Average$1,487FlexibilityNo 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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