Cheap flights from Australia to Ko Samui from $277

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

$490

One-way from

$277

Popular in

December

Cheapest in

October

Average price

$1,049
Scoot
  • Scoot
  • 3/11-12/11
  • 2 total stops
  • 32h 40m total
  • Australia to Ko Samui
Scoot
  • Scoot
  • 12/11
  • 1 total stop
  • 14h 15m total
  • Australia to Ko Samui
Highest demand for flights based on searches. 15% potential increase in price ($300 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($59 potential savings vs. average return price).
Average for round-trip flights in September 2025

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 17 September 2025.

Mon 3/1105:35PER - USM
1 stop14h 15mScoot
Wed 12/1108:55USM - PER
1 stop18h 25mScoot
Deal found 14/9$490
Tue 4/1105:35PER - USM
1 stop14h 15mScoot
Thu 13/1108:55USM - PER
1 stop18h 25mScoot
Deal found 15/9$500
Mon 27/1005:35PER - USM
1 stop27h 25mScoot
Sun 9/1108:55USM - PER
1 stop18h 25mScoot
Deal found 15/9$511
Wed 5/1105:35PER - USM
1 stop14h 15mScoot
Fri 14/1118:05USM - PER
1 stop9h 15mScoot
Deal found 16/9$535
Fri 31/1005:35PER - USM
1 stop12h 35mScoot
Fri 7/1118:05USM - PER
1 stop9h 15mScoot
Deal found 15/9$536
Sat 1/1105:35PER - USM
1 stop14h 15mScoot
Sat 8/1108:55USM - PER
1 stop18h 25mScoot
Deal found 17/9$538
Mon 13/1021:55PER - USM
1 stop19h 50mScoot
Mon 27/1008:55USM - PER
1 stop18h 25mScoot
Deal found 15/9$577
Mon 13/1021:55PER - USM
1 stop14h 15mScoot
Fri 31/1012:00USM - PER
1 stop15h 20mScoot
Deal found 15/9$626
Mon 3/1105:35PER - USM
1 stop14h 15mMultiple Airlines
Wed 12/1106:45USM - PER
2 stops20h 15mMultiple Airlines
Deal found 14/9$634
Wed 5/1105:35PER - USM
1 stop14h 15mMultiple Airlines
Fri 14/1107:00USM - PER
2 stops20h 00mMultiple Airlines
Deal found 16/9$637
Fri 31/1005:35PER - USM
1 stop27h 25mMultiple Airlines
Fri 7/1118:05USM - PER
2 stops32h 55mMultiple Airlines
Deal found 15/9$640
Mon 17/1114:20SYD - USM
1 stop32h 30mScoot
Sun 23/1108:55USM - SYD
1 stop24h 10mScoot
Deal found 16/9$710

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 17 September 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

Mon 3/11

05:35-18:50

1 stop14h 15m

Ko Samui

Wed 12/11

08:55-04:20

1 stop18h 25m

$490

PerthKo Samui

PER - USM

PERUSM

Perth

Tue 4/11

05:35-18:50

1 stop14h 15m

Ko Samui

Thu 13/11

08:55-04:20

1 stop18h 25m

$500

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 13/10

21:55-16:45

1 stop19h 50m

Ko Samui

Mon 27/10

08:55-04:20

1 stop18h 25m

$577

PerthKo Samui

PER - USM

PERUSM

Perth

Fri 31/10

05:35-08:00

1 stop27h 25m

Ko Samui

Fri 7/11

18:05-04:00

2 stops32h 55m

$640

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 13/10

18:25-20:25

2 stops27h 00m

Ko Samui

Fri 31/10

08:15-04:00

2 stops18h 45m

$688

PerthKo Samui

PER - USM

PERUSM

Perth

Wed 15/10

05:10-18:00

2 stops13h 50m

Ko Samui

Tue 28/10

18:05-04:00

2 stops32h 55m

$713

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 13/10

05:10-20:25

2 stops16h 15m

Ko Samui

Mon 27/10

12:00-05:50

2 stops16h 50m

$760

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Tue 14/10

14:55-16:45

2 stops29h 50m

Ko Samui

Tue 28/10

18:05-23:15

2 stops25h 10m

$773

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 30/10

20:05-17:10

1 stop25h 05m

Ko Samui

Thu 6/11

07:00-08:05

2 stops21h 05m

$815

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Thu 23/10

14:00-07:50

1 stop21h 50m

Ko Samui

Thu 30/10

12:25-20:10

2 stops27h 45m

$824

Flights are sorted by cheapest return flights first.

Deals found on 15/9

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, 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 17 September 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 17 September 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.

Food

7.7

Comfort

8.0

Entertainment

8.0

Overall

8.1

Boarding

8.2

Crew

8.6

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.

Food

7.7

Comfort

8.0

Entertainment

8.0

Overall

8.1

Boarding

8.2

Crew

8.6

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.

Food

7.7

Comfort

8.0

Entertainment

8.0

Overall

8.1

Boarding

8.2

Crew

8.6

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.

Food

7.7

Comfort

8.0

Entertainment

8.0

Overall

8.1

Boarding

8.2

Crew

8.6

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.

Food

7.7

Comfort

8.0

Entertainment

8.0

Overall

8.1

Boarding

8.2

Crew

8.6

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.

Food

7.7

Comfort

8.0

Entertainment

8.0

Overall

8.1

Boarding

8.2

Crew

8.6

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 $490, 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 most popular routes 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 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 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 17 September 2025.

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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$486Average$829FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Singapore AirlinesCheapest$809Average$1,307FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Qantas AirwaysCheapest$1,009Average$1,985FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Bangkok AirwaysCheapest$1,069Average$1,339FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,175Average$1,399FlexibilityNo 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.

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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