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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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
30 Mar — 6 Apr1
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 25 March 2025.

Round-trip from

$657

One-way from

$277

Popular in

December

Cheapest in

August

Average price

$1,085
7/5-13/5
  • 7/5-13/5
  • 3 total stops
  • 53h 45m total
  • Australia to Ko Samui
Search Deals
Scoot
  • Scoot
  • 20/5
  • 1 total stop
  • 21h 35m total
  • Australia to Ko Samui
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($384 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($81 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 25 March 2025.

Thu 15/518:25PER - USM
1 stop25h 05mMultiple Airlines
Wed 28/511:25USM - PER
2 stops16h 05mMultiple Airlines
Deal found 24/3$667
Thu 8/518:25PER - USM
1 stop14h 25mScoot
Thu 15/508:45USM - PER
1 stop10h 55mScoot
Deal found 24/3$679
Fri 2/513:00MEL - USM
1 stop32h 30mMultiple Airlines
Thu 8/508:45USM - MEL
2 stops16h 55mMultiple Airlines
Deal found 25/3$806
Wed 16/713:00MEL - USM
1 stop32h 30mScoot
Sun 20/708:45USM - MEL
1 stop24h 00mScoot
Deal found 24/3$821
Fri 9/512:50SYD - USM
1 stop32h 40mMultiple Airlines
Fri 16/506:55USM - SYD
2 stops34h 05mMultiple Airlines
Deal found 23/3$841
Thu 8/520:45SYD - USM
1 stop24h 45mScoot
Mon 12/508:45USM - SYD
1 stop31h 45mScoot
Deal found 25/3$848
Mon 19/501:10PER - USM
1 stop18h 20mSingapore Airlines
Tue 27/508:45USM - PER
1 stop14h 10mSingapore Airlines
Deal found 24/3$862
Tue 6/512:15ADL - USM
2 stops32h 45mMultiple Airlines
Thu 15/508:45USM - ADL
2 stops30h 00mMultiple Airlines
Deal found 24/3$967
Tue 10/616:40AVV - USM
2 stops28h 50mMultiple Airlines
Mon 16/617:55USM - AVV
2 stops17h 15mMultiple Airlines
Deal found 23/3$981
Mon 23/602:10PER - USM
2 stops12h 35mMalaysia Airlines
Wed 9/708:45USM - PER
2 stops15h 25mMalaysia Airlines
Deal found 24/3$1,121
Mon 6/1000:35MEL - USM
1 stop11h 15mSingapore Airlines
Fri 17/1008:45USM - MEL
1 stop29h 25mSingapore Airlines
Deal found 24/3$1,279
Wed 7/509:10ADL - USM
1 stop11h 50mSingapore Airlines
Wed 21/508:45USM - ADL
1 stop29h 05mSingapore Airlines
Deal found 23/3$1,282

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 25 March 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 7/5

21:55-18:30

1 stop21h 35m

Ko Samui

Tue 13/5

08:00-17:10

2 stops32h 10m

$657

PerthKo Samui

PER - USM

PERUSM

Perth

Thu 8/5

18:25-07:50

1 stop14h 25m

Ko Samui

Thu 15/5

08:45-20:40

1 stop10h 55m

$679

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Fri 2/5

13:00-18:30

1 stop32h 30m

Ko Samui

Thu 8/5

08:45-04:40

2 stops16h 55m

$806

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Wed 16/7

13:00-18:30

1 stop32h 30m

Ko Samui

Sun 20/7

08:45-11:45

1 stop24h 00m

$821

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 9/5

12:50-18:30

1 stop32h 40m

Ko Samui

Fri 16/5

06:55-20:00

2 stops34h 05m

$841

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 19/5

01:10-18:30

1 stop18h 20m

Ko Samui

Tue 27/5

08:45-23:55

1 stop14h 10m

$862

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 8/5

20:45-07:50

1 stop14h 05m

Ko Samui

Mon 12/5

08:45-19:30

1 stop31h 45m

$878

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Tue 6/5

12:15-18:30

2 stops32h 45m

Ko Samui

Thu 15/5

08:45-17:15

2 stops30h 00m

$967

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Tue 10/6

16:40-18:30

2 stops28h 50m

Ko Samui

Mon 16/6

17:55-14:10

2 stops17h 15m

$981

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 23/6

02:10-13:45

2 stops12h 35m

Ko Samui

Wed 9/7

08:45-01:10

2 stops15h 25m

$1,121

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 48 results
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5

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 25 March 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.

Rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

Temperature in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

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 25 March 2025.
Read reviews from past customers who have flown China Airlines, Singapore Airlines and Thai Airways from Australia to Ko Samui. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.2
Very Good
723 reviews
Check prices

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Crew

8.5

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
China Airlines
8.2
Very Good
723 reviews
China Airlines
8.2
Very Good
723 reviews
Check prices

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Crew

8.5

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Singapore Airlines
8.1
Very Good
1,284 reviews
China Airlines
8.2
Very Good
723 reviews
Check prices

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Crew

8.5

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Thai Airways
7.8
Good
316 reviews
China Airlines
8.2
Very Good
723 reviews
Check prices

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Crew

8.5

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Vietnam Airlines
7.6
Good
192 reviews
China Airlines
8.2
Very Good
723 reviews
Check prices

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Crew

8.5

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Cathay Pacific
7.5
Good
833 reviews
China Airlines
8.2
Very Good
723 reviews
Check prices

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Crew

8.5

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

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 $277. Singapore Airlines flights start at $609 while deals on Vietnam Airlines start at $929 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 Pha Ngan
Ko Tao

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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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$526Average$874FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Singapore AirlinesCheapest$812Average$1,318FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Thai AirwaysCheapest$1,114Average$1,457FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Bangkok AirwaysCheapest$1,160Average$1,324FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Qantas AirwaysCheapest$1,399Average$2,351FlexibilityNo cancel feeOn-time74%
Search Qantas 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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