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Cheap flights from Australia to Ko Samui from $242

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 29/7. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
16 Jul — 23 Jul1
1 adult

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 July 2025.

Round-trip from

$585

One-way from

$242

Popular in

December

Cheapest in

August

Average price

$1,034
20/8-27/8
  • 20/8-27/8
  • 3 total stops
  • 34h 15m total
  • Australia to Ko Samui
Search Deals
Scoot
  • Scoot
  • 29/7
  • 1 total stop
  • 21h 35m total
  • Australia to Ko Samui
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($325 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($65 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Australia to Ko Samui

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 July 2025.

Wed 20/821:55PER - USM
1 stop21h 35mMultiple Airlines
Wed 27/807:00USM - PER
2 stops12h 40mMultiple Airlines
Deal found 9/7$585
Wed 6/821:55PER - USM
1 stop10h 55mScoot
Wed 13/808:45USM - PER
1 stop10h 55mScoot
Deal found 9/7$655
Sun 7/921:30MEL - USM
1 stop24h 00mScoot
Sun 14/908:45USM - MEL
1 stop32h 30mScoot
Deal found 10/7$719
Sun 9/1121:45SYD - USM
1 stop14h 15mMultiple Airlines
Thu 20/1112:15USM - SYD
2 stops20h 35mMultiple Airlines
Deal found 9/7$736
Mon 1/913:00MEL - USM
2 stops32h 00mMultiple Airlines
Mon 15/915:25USM - MEL
2 stops25h 50mMultiple Airlines
Deal found 9/7$747
Sat 9/813:10SYD - USM
1 stop32h 20mScoot
Sat 13/908:45USM - SYD
1 stop23h 50mScoot
Deal found 9/7$747
Sat 8/1108:05ADL - USM
2 stops27h 25mMultiple Airlines
Sat 15/1119:25USM - ADL
3 stops32h 30mMultiple Airlines
Deal found 9/7$882
Tue 19/807:00BNE - USM
2 stops27h 50mMultiple Airlines
Tue 26/808:45USM - BNE
2 stops31h 15mMultiple Airlines
Deal found 10/7$986
Mon 25/810:15CNS - USM
2 stops33h 30mMultiple Airlines
Mon 1/908:45USM - CNS
2 stops18h 15mMultiple Airlines
Deal found 10/7$1,068
Thu 28/817:35ADL - USM
1 stop16h 45mSingapore Airlines
Tue 9/908:45USM - ADL
1 stop20h 10mSingapore Airlines
Deal found 11/7$1,208
Mon 1/906:00AVV - USM
2 stops39h 00mMultiple Airlines
Mon 15/915:25USM - AVV
2 stops21h 40mMultiple Airlines
Deal found 9/7$1,251
Tue 19/818:10BNE - USM
1 stop16h 40mSingapore Airlines
Tue 26/817:40USM - BNE
1 stop13h 40mSingapore Airlines
Deal found 9/7$1,455

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 July 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

Wed 20/8

21:55-18:30

1 stop21h 35m

Ko Samui

Wed 27/8

07:00-20:40

2 stops12h 40m

$585

PerthKo Samui

PER - USM

PERUSM

Perth

Wed 6/8

21:55-07:50

1 stop10h 55m

Ko Samui

Wed 13/8

08:45-20:40

1 stop10h 55m

$655

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Sun 7/9

21:30-18:30

1 stop24h 00m

Ko Samui

Sun 14/9

08:45-20:15

1 stop32h 30m

$719

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 9/11

21:45-08:00

1 stop14h 15m

Ko Samui

Thu 20/11

12:15-12:50

2 stops20h 35m

$736

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Mon 1/9

13:00-18:00

2 stops32h 00m

Ko Samui

Mon 15/9

15:25-20:15

2 stops25h 50m

$747

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 9/8

13:10-18:30

1 stop32h 20m

Ko Samui

Sat 13/9

08:45-11:35

1 stop23h 50m

$747

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sat 8/11

08:05-08:00

2 stops27h 25m

Ko Samui

Sat 15/11

19:25-07:25

3 stops32h 30m

$882

BrisbaneKo Samui

BNE - USM

BNEUSM

Brisbane

Sat 8/11

14:00-18:30

2 stops31h 30m

Ko Samui

Fri 14/11

19:25-17:30

2 stops19h 05m

$925

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 25/8

10:15-16:45

2 stops33h 30m

Ko Samui

Mon 1/9

08:45-06:00

2 stops18h 15m

$1,068

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 28/8

17:35-07:50

1 stop16h 45m

Ko Samui

Tue 9/9

08:45-07:25

1 stop20h 10m

$1,208

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 33 results
1
2
3
4

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, August is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $533). Flying from Australia to Ko Samui in December is currently the most expensive (average of $1,051). 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 July 2025.

When flying from Australia to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 2025.
Get a feel of what it's like to fly with China Airlines, Singapore Airlines, andDelta 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.
China Airlines
8.3
Very Good
744 reviews
Check prices

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
China Airlines
8.3
Very Good
744 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Singapore Airlines
8.1
Very Good
1,324 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Delta
8.0
Very Good
7,951 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Cathay Pacific
7.6
Good
932 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Qantas Airways
7.5
Good
876 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

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.

  • 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 $242. Singapore Airlines flights start at $779 while deals on Qantas Airways start at $1,202 one-way.

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

    While some choose either Sydney Kingsford Smith - Ko Samui or Perth - 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, August is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $533). Flying from Australia to Ko Samui in December is currently the most expensive (average of $1,051). 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 Australia?

Book flights to Australia if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

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Alternative routes for Australia to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$515Average$828FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Singapore AirlinesCheapest$820Average$1,307FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Qantas AirwaysCheapest$1,067Average$2,061FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Bangkok AirwaysCheapest$1,111Average$1,290FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,114Average$1,401FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

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

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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.

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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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