How long is the flight from Australia to Ko Samui?

For as low as $741, Scoot can have you in Ko Samui from Australia in 21h. 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 $256. Thai Airways flights start at $730 while deals on Singapore Airlines start at $755 one-way.

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.

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).

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.

What are the most popular airlines that fly from Australia to Ko Samui?

The most popular airlines flying from Australia to Ko Samui are Scoot, Singapore Airlines and Qantas Airways. Something to consider prior to booking your flight.

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

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.

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.

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.

$394+ Cheap Flights from Australia to Ko Samui

Cheap flight deals from Australia to Ko Samui

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 7 September 2026.

Sun 18/1005:35 -

1 stop12h 45m

Tue 27/1019:45 -

1 stop22h 55m

Deal found 4/9$674

Sun 18/1005:35 -

1 stop27h 10m

Mon 2/1118:05 -

1 stop24h 35m

Deal found 2/9$688

Tue 13/1005:35 -

1 stop14h 15m

Thu 22/1018:15 -

1 stop9h 05m

Deal found 4/9$712

Mon 19/1022:35 -

1 stop24h 15m

Tue 27/1019:45 -

1 stop21h 35m

Deal found 4/9$717

Wed 14/1016:00 -

1 stop19h 30m

Thu 22/1012:30 -

2 stops27h 40m

Deal found 6/9$720

Tue 20/1014:00 -

1 stop32h 50m

Tue 27/1019:45 -

1 stop21h 35m

Deal found 4/9$720

Sun 18/1004:45 -

2 stops16h 40m

Tue 27/1012:00 -

1 stop30h 40m

Deal found 4/9$722

Tue 13/1014:00 -

1 stop32h 50m

Tue 27/1019:45 -

1 stop21h 35m

Deal found 5/9$726

Sat 21/1121:10 -

1 stop21h 00m

Mon 30/1119:45 -

1 stop22h 55m

Deal found 6/9$741

Thu 29/1020:05 -

1 stop25h 05m

Wed 11/1118:05 -

1 stop14h 05m

Deal found 7/9$760

Mon 12/1016:00 -

1 stop27h 00m

Sun 18/1007:50 -

2 stops24h 05m

Deal found 5/9$763

Tue 13/1012:30 -

1 stop31h 20m

Thu 22/1012:30 -

2 stops27h 40m

Deal found 4/9$767

Best flights from Australia to Ko Samui
Discover carefully curated flight deals from Australia to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Sat 21/1121:10 -

1 stop21h 00m

Mon 30/1119:45 -

1 stop22h 55m

Deal found 6/9$741

Mon 26/1020:40 -

2 stops21h 50m

Mon 2/1118:05 -

1 stop21h 30m

Deal found 6/9$770

Mon 9/1107:00 -

2 stops17h 25m

Wed 11/1113:25 -

1 stop12h 50m

Deal found 2/9$1,338

Sat 26/918:10 -

1 stop16h 35m

Sat 17/1018:15 -

1 stop19h 40m

Deal found 2/9$1,404

Sun 18/1002:10 -

2 stops19h 40m

Thu 22/1008:45 -

2 stops15h 25m

Deal found 2/9$1,435

Fri 13/1113:25 -

1 stop25h 30m

Wed 2/1218:05 -

1 stop14h 05m

Deal found 4/9$813

Mon 19/1008:20 -

2 stops26h 00m

Thu 22/1011:55 -

1 stop17h 55m

Deal found 2/9$1,744

Wed 28/1022:10 -

2 stops22h 15m

Sun 1/1114:30 -

2 stops17h 45m

Deal found 2/9$1,775

Thu 22/1014:00 -

1 stop31h 20m

Thu 29/1018:05 -

1 stop23h 15m

Deal found 6/9$828

Fri 23/1004:45 -

2 stops27h 25m

Fri 30/1018:15 -

3 stops24h 25m

Deal found 3/9$926

Mon 19/1013:40 -

1 stop20h 30m

Mon 2/1118:15 -

2 stops48h 55m

Deal found 7/9$998

Mon 12/1014:00 -

1 stop32h 50m

Fri 16/1008:00 -

2 stops24h 45m

Deal found 2/9$1,038

Wed 28/1020:05 -

1 stop26h 45m

Sun 1/1118:05 -

1 stop20h 45m

Deal found 2/9$1,145

Mon 12/1013:40 -

1 stop20h 30m

Tue 27/1018:15 -

2 stops48h 55m

Deal found 5/9$1,064

Sun 8/1110:10 -

2 stops35h 35m

Fri 13/1116:25 -

2 stops21h 50m

Deal found 5/9$1,420

Fri 16/1002:10 -

2 stops12h 00m

Sat 24/1008:45 -

2 stops15h 25m

Deal found 3/9$1,504

Sun 11/1011:20 -

1 stop13h 50m

Sat 31/1013:25 -

1 stop14h 10m

Deal found 4/9$1,429

Fri 2/1013:40 -

1 stop29h 55m

Sun 11/1008:00 -

2 stops34h 30m

Deal found 6/9$1,125

Mon 9/1122:35 -

1 stop22h 35m

Wed 11/1112:00 -

1 stop29h 20m

Deal found 2/9$1,267

Mon 19/1012:00 -

2 stops33h 45m

Wed 21/1013:30 -

2 stops24h 45m

Deal found 2/9$1,449

Mon 19/1018:35 -

1 stop27h 45m

Mon 26/1012:00 -

1 stop17h 20m

Deal found 4/9$1,755

Sun 18/1021:35 -

2 stops26h 50m

Sun 25/1007:55 -

3 stops24h 15m

Deal found 3/9$1,177

Wed 28/1010:35 -

1 stop13h 30m

Sun 1/1114:05 -

2 stops19h 30m

Deal found 5/9$1,521

Wed 24/218:20 -

1 stop25h 50m

Sat 27/208:55 -

1 stop29h 20m

Deal found 2/9$1,880

Sun 13/1220:05 -

1 stop15h 55m

Mon 21/1219:45 -

1 stop19h 05m

Deal found 6/9$1,432

Mon 19/1018:30 -

2 stops19h 10m

Mon 26/1019:45 -

2 stops19h 45m

Deal found 4/9$1,286

Mon 19/1016:30 -

3 stops31h 30m

Mon 26/1016:25 -

2 stops19h 50m

Deal found 4/9$1,572

Tue 6/1010:10 -

1 stop12h 10m

Tue 13/1015:25 -

2 stops13h 30m

Deal found 3/9$2,095

Wed 28/1006:00 -

2 stops43h 05m

Sun 1/1113:25 -

2 stops27h 35m

Deal found 2/9$1,593

Sat 26/911:05 -

2 stops27h 00m

Sat 17/1006:00 -

2 stops24h 00m

Deal found 2/9$1,345

Find flight deals from Australia to Ko Samui

Round-trip from	$674
One-way from	$394
Popular in	December
Cheapest in	March
Average price	$1,382

Scoot
18/10-27/10
2 total stops
35h 40m total
Australia to Ko Samui

Search Deals

Scoot
25/2-31/12
1 total stop
22h 35m total
Australia to Ko Samui

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($201 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($46 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

MelbourneKo Samui

MEL Melbourne - USM Ko Samui

MELUSM

Melbourne

Thu 25/2

13:25-08:00

1 stop22h 35m

Ko Samui

Wed 31/12

00:00-03:00

Nonstop0h 00m

$394

SydneyKo Samui

SYD Sydney Kingsford Smith - USM Ko Samui

SYDUSM

Sydney Kingsford Smith

Wed 14/10

21:50-20:25

2 stops26h 35m

Ko Samui

Wed 31/12

00:00-03:00

Nonstop0h 00m

$405

SydneyKo Samui

SYD Sydney Kingsford Smith - USM Ko Samui

SYDUSM

Sydney Kingsford Smith

Wed 14/10

14:00-17:20

1 stop31h 20m

Ko Samui

Wed 31/12

00:00-03:00

Nonstop0h 00m

$405

SydneyKo Samui

SYD Sydney Kingsford Smith - USM Ko Samui

SYDUSM

Sydney Kingsford Smith

Mon 12/10

21:35-10:10

1 stop16h 35m

Ko Samui

Wed 31/12

00:00-03:00

Nonstop0h 00m

$432

SydneyKo Samui

SYD Sydney Kingsford Smith - USM Ko Samui

SYDUSM

Sydney Kingsford Smith

Wed 16/9

20:50-11:55

2 stops18h 05m

Ko Samui

Wed 31/12

00:00-03:00

Nonstop0h 00m

$448

PerthKo Samui

PER Perth - USM Ko Samui

PERUSM

Perth

Thu 8/10

07:30-20:25

1 stop13h 55m

Ko Samui

Wed 31/12

00:00-01:00

Nonstop0h 00m

$455

PerthKo Samui

PER Perth - USM Ko Samui

PERUSM

Perth

Sun 13/9

20:50-19:15

2 stops23h 25m

Ko Samui

Wed 31/12

00:00-01:00

Nonstop0h 00m

$487

BrisbaneKo Samui

BNE Brisbane - USM Ko Samui

BNEUSM

Brisbane

Fri 16/10

23:30-16:55

2 stops20h 25m

Ko Samui

Wed 31/12

00:00-03:00

Nonstop0h 00m

$493

MelbourneKo Samui

MEL Melbourne - USM Ko Samui

MELUSM

Melbourne

Thu 25/2

13:25-07:10

2 stops21h 45m

Ko Samui

Wed 31/12

00:00-03:00

Nonstop0h 00m

$495

PerthKo Samui

PER Perth - USM Ko Samui

PERUSM

Perth

Tue 15/9

18:25-20:25

2 stops27h 00m

Ko Samui

Wed 31/12

00:00-01:00

Nonstop0h 00m

$497

Flights are sorted by cheapest return flights first.

Deals found on 7/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

PER-USM

MEL-USM

BNE-USM

SYD-USM

ADL-USM

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

AU0-USM

PER-USM

MEL-USM

BNE-USM

SYD-USM

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 $945). Flying from Australia to Ko Samui in December is currently the most expensive (average of $1,633). 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.

How far ahead should I book a flight from Australia to Ko Samui?

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Australia to Ko Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Ko Samui

Get a feel of what it's like to fly with Singapore Airlines,Thai Airways, andQantas 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

1,596 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Singapore Airlines

8.2

Very Good

1,596 reviews

Singapore Airlines

8.2

Very Good

1,596 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Thai Airways

7.9

Good

418 reviews

Singapore Airlines

8.2

Very Good

1,596 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Qantas Airways

7.5

Good

1,090 reviews

Singapore Airlines

8.2

Very Good

1,596 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Scoot

6.7

Okay

331 reviews

Singapore Airlines

8.2

Very Good

1,596 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Related info for your journey

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 $741, Scoot can have you in Ko Samui from Australia in 21h. 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 $256. Thai Airways flights start at $730 while deals on Singapore Airlines start at $755 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, March is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $945). Flying from Australia to Ko Samui in December is currently the most expensive (average of $1,633). 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

Ko Tao

Ko Pha Ngan

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Fly from Australia to Ko Samui on these airlines

Singapore Airlines flights from Australia to Ko Samui

Thai Airways flights from Australia to Ko Samui

Top 4 airlines flying from Australia to Ko Samui

Airline	Cheapest	Average	Flexibility	On-time
Scoot	Cheapest$510	Average$940	FlexibilityNo cancel fee	On-timeN/A	Search Scoot flights
Qantas Airways	Cheapest$879	Average$1,226	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Singapore Airlines	Cheapest$952	Average$1,478	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Thai Airways	Cheapest$1,188	Average$1,404	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights

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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?

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Cheap flights from Australia to Ko Samui from $394

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Australia to Ko Samui

Cheapest flights from Australia to Ko SamuiExplore 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 7 September 2026.

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 7 September 2026.

Best flights from Australia to Ko SamuiDiscover carefully curated flight deals from Australia to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Discover carefully curated flight deals from Australia to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Direct flights from Australia to Ko SamuiExplore direct flight options from Australia to Ko Samui based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 September 2026.

Explore direct flight options from Australia to Ko Samui based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 September 2026.

Last-minute flights from Australia to Ko SamuiDiscover last-minute flight deals from Australia to Ko Samui. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals from Australia to Ko Samui. Data last updated 7 September 2026 and is based on user searches.

One-way flights from Australia to Ko SamuiSearch for one-way flight options from Australia to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

Search for one-way flight options from Australia to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

Find flight deals from Australia to Ko Samui

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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.

Cheapflights Insights

What is the cheapest month to book a flight from Australia to Ko Samui?

How far ahead should I book a flight from Australia to Ko Samui?

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Australia to Ko Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Ko Samui

Get a feel of what it's like to fly with Singapore Airlines,Thai Airways, andQantas 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.

Related info for your journey

What airport do you fly into for flights to Ko Samui from Australia?

How long is the flight from Australia to Ko Samui?

What are the cheapest airlines to fly from Australia to Ko Samui one-way?

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?

How can I find direct flights from Australia to Ko Samui?

Can I find deals for business class flights from Australia to Ko Samui?

What is the cheapest month to book a flight from Australia to Ko Samui?

Travelling to a place near Ko Samui?

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 7 September 2026.

Alternative routes for Australia to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ko Samui by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Thailand

Book a non-stop flight to one of these other cities located in Thailand.

Search flights from Australia to Ko Samui by cabin class

Find flights from Australia to Ko Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ko Samui

Explore flights to Ko Samui departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 7 September 2026.

Australia and Ko Samui flights

Browse other Australia and Ko Samui flight options. Last updated on 7 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Australia to Ko Samui flights

Consider these flights travelling from Australia to Ko Samui.

Top 4 airlines flying from Australia to Ko Samui

Fly with Cheapflights

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

Why should you use Cheapflights to find cheap flight tickets from Australia to Ko Samui?

Can Cheapflights find flights from Australia to Ko Samui with no change fees?

Can Cheapflights notify me if prices for flights from Australia to Ko Samui become cheaper?

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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 7 September 2026.

Best flights from Australia to Ko Samui
Discover carefully curated flight deals from Australia to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Direct flights from Australia to Ko Samui
Explore direct flight options from Australia to Ko Samui based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 September 2026.

Last-minute flights from Australia to Ko Samui
Discover last-minute flight deals from Australia to Ko Samui. Data last updated 7 September 2026 and is based on user searches.

One-way flights from Australia to Ko Samui
Search for one-way flight options from Australia to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.