What are the cheapest airlines flying from Adelaide to Ko Samui round-trip?

According to our current data, Qantas Airways ($1,152), and Singapore Airlines ($1,318) offers the cheapest pricing from Adelaide to Ko Samui. Qantas Airways is currently priced 38% below the average price you’ll pay for this route.

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 is the cheapest time of day to fly from ADL to USM?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Adelaide to Ko Samui as you normally would.

Can I find deals for flights from Adelaide to Ko Samui that include hotel bookings?

Yes. In addition to deals on Adelaide to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

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

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Adelaide to Ko Samui.

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

Yes. Cheapflights offers flight deals from Adelaide 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.

$601+ Cheap Flights from Adelaide to Ko Samui

Cheap flight deals from Adelaide to Ko Samui

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Adelaide to Ko Samui
Explore the most affordable flight options available from Adelaide to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Mon 9/1111:30 -

2 stops35h 50m

Sun 15/1107:00 -

2 stops23h 25m

Deal found 7/10$1,088

Fri 20/1118:50 -

2 stops19h 35m

Tue 24/1118:05 -

2 stops20h 40m

Deal found 4/10$1,257

Tue 17/1114:50 -

2 stops23h 35m

Tue 24/1118:05 -

2 stops20h 40m

Deal found 3/10$1,270

Wed 18/1106:05 -

2 stops39h 40m

Wed 25/1113:25 -

2 stops18h 20m

Deal found 4/10$1,342

Wed 28/1012:00 -

2 stops33h 45m

Sun 1/1116:25 -

2 stops17h 35m

Deal found 5/10$1,411

Mon 9/1118:35 -

1 stop26h 05m

Sun 15/1112:00 -

1 stop17h 20m

Deal found 7/10$1,418

Sat 21/1106:25 -

2 stops39h 20m

Sat 28/1116:25 -

2 stops19h 50m

Deal found 6/10$1,440

Thu 12/1106:00 -

2 stops17h 55m

Sun 15/1113:25 -

2 stops20h 35m

Deal found 7/10$1,453

Sat 21/1110:30 -

3 stops34h 10m

Sat 28/1112:00 -

2 stops26h 10m

Deal found 6/10$1,479

Find flight deals from Adelaide to Ko Samui

Round-trip from	$1,088
Popular in	December
Cheapest in	August
Average price	$2,990

9/11-15/11
4 total stops
59h 15m total
Adelaide to Ko Samui

Search Deals

Highest demand for flights based on searches. 25% potential increase in price ($923 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 10% potential price decrease ($267 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Mon 18/1

12:05-17:10

3 stops32h 35m

Ko Samui

Wed 31/12

00:00-02:30

Nonstop0h 00m

$601

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Wed 16/12

06:25-18:55

2 stops16h 00m

Ko Samui

Wed 31/12

00:00-02:30

Nonstop0h 00m

$1,121

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Fri 20/11

18:50-10:55

2 stops19h 35m

Ko Samui

Tue 24/11

18:05-18:15

2 stops20h 40m

$1,257

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Tue 17/11

14:50-10:55

2 stops23h 35m

Ko Samui

Tue 24/11

18:05-18:15

2 stops20h 40m

$1,270

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Fri 18/12

06:25-18:55

2 stops16h 00m

Ko Samui

Wed 31/12

00:00-02:30

Nonstop0h 00m

$1,402

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Wed 28/10

12:00-18:15

2 stops33h 45m

Ko Samui

Sun 1/11

16:25-13:30

2 stops17h 35m

$1,411

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Mon 9/11

18:35-17:10

1 stop26h 05m

Ko Samui

Sun 15/11

12:00-08:50

1 stop17h 20m

$1,418

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Sat 21/11

06:25-18:15

2 stops39h 20m

Ko Samui

Sat 28/11

16:25-15:45

2 stops19h 50m

$1,440

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Thu 12/11

06:00-20:25

2 stops17h 55m

Ko Samui

Sun 15/11

13:25-13:30

2 stops20h 35m

$1,453

AdelaideKo Samui

ADL Adelaide - USM Ko Samui

ADLUSM

Adelaide

Sat 20/3

11:30-07:35

2 stops23h 35m

Ko Samui

Sat 3/4

19:45-09:55

2 stops34h 40m

$1,506

Flights are sorted by cheapest return flights first.

Deals found on 8/10

Showing 1-10 of 14 resultsSorted by cheapest first

Best time to book a flight from Adelaide to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Adelaide with our price prediction graph.

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.

Reviews of airlines servicing Ko Samui

Read through reviews of airlines operating flights from Adelaide to Ko Samui, such as Singapore Airlines and Qantas Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.2

Very Good

1,624 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

1,624 reviews

Singapore Airlines

8.2

Very Good

1,624 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

1,104 reviews

Singapore Airlines

8.2

Very Good

1,624 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 are the cheapest airlines flying from Adelaide to Ko Samui round-trip?
According to our current data, Qantas Airways ($1,152), and Singapore Airlines ($1,318) offers the cheapest pricing from Adelaide to Ko Samui. Qantas Airways is currently priced 38% below the average price you’ll pay for this route.
Can I find deals for flights from Adelaide to Ko Samui that include hotel bookings?
Yes. In addition to deals on Adelaide to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Adelaide to Ko Samui?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Adelaide to Ko Samui.
Can I find deals for business class flights from Adelaide to Ko Samui?
Yes. Cheapflights offers flight deals from Adelaide 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.

See more FAQs

Ko Tao

Ko Pha Ngan

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Alternative routes

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Flights by cabin class

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Alternative routes for Adelaide to Ko Samui

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Adelaide to Krabi flights

Adelaide to Chiang Mai flights

Top 2 airlines flying from Adelaide to Ko Samui

Airline	Cheapest	Average	Flexibility	On-time
Qantas Airways	Cheapest$1,152	Average$1,289	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Singapore Airlines	Cheapest$1,318	Average$1,640	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ko Samui from Adelaide today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Adelaide to Ko Samui for you. Better yet — we are completely free to use.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Adelaide to Ko Samui, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ko Samui from Adelaide today and book when prices fit your budget.

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Cheap flights from Adelaide to Ko Samui from $601

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Adelaide to Ko Samui

Cheapest flights from Adelaide to Ko SamuiExplore the most affordable flight options available from Adelaide to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Explore the most affordable flight options available from Adelaide to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Best flights from Adelaide to Ko SamuiDiscover carefully curated flight deals from Adelaide to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Discover carefully curated flight deals from Adelaide to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Last-minute flights from Adelaide to Ko SamuiDiscover last-minute flight deals from Adelaide to Ko Samui. Data last updated 8 October 2026 and is based on user searches.

Discover last-minute flight deals from Adelaide to Ko Samui. Data last updated 8 October 2026 and is based on user searches.

One-way flights from Adelaide to Ko SamuiSearch for one-way flight options from Adelaide to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.

Search for one-way flight options from Adelaide to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.

Find flight deals from Adelaide to Ko Samui

Round-trip from

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Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Adelaide to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Adelaide with our price prediction graph.

Reviews of airlines servicing Ko Samui

Read through reviews of airlines operating flights from Adelaide to Ko Samui, such as Singapore Airlines and Qantas Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What are the cheapest airlines flying from Adelaide to Ko Samui round-trip?

Can I find deals for flights from Adelaide to Ko Samui that include hotel bookings?

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

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

Travelling to a place near Ko Samui?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Adelaide 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 Adelaide to Ko Samui by cabin class

Find flights from Adelaide 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 8 October 2026.

Adelaide and Ko Samui flights

Browse other Adelaide and Ko Samui flight options. Last updated on 8 October 2026.

Other flights from Adelaide

Browse through other flights departing from Adelaide. Flights are based on user searches made on Cheapflights and were last updated on 8 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 2 airlines flying from Adelaide to Ko Samui

Fly with Cheapflights

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

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

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

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

100% Free

Book with flexibility

Travel Smart

Cheapest flights from Adelaide to Ko Samui
Explore the most affordable flight options available from Adelaide to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Best flights from Adelaide to Ko Samui
Discover carefully curated flight deals from Adelaide to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Last-minute flights from Adelaide to Ko Samui
Discover last-minute flight deals from Adelaide to Ko Samui. Data last updated 8 October 2026 and is based on user searches.

One-way flights from Adelaide to Ko Samui
Search for one-way flight options from Adelaide to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.