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Cheap flights from Adelaide to Ko Samui from $1,043

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/6. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — USM
26 May — 2 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Adelaide to Ko Samui

Enter your travel dates to find the best prices.

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 26 April 2026.

Sat 13/606:15
ADL
-
USM
2 stops15h 05m
Multiple Airlines
Mon 22/608:40
USM
-
ADL
2 stops34h 45m
Multiple Airlines
Deal found 25/4$1,043
Sun 14/618:50
ADL
-
USM
2 stops25h 00m
Multiple Airlines
Tue 23/608:40
USM
-
ADL
2 stops30h 05m
Multiple Airlines
Deal found 22/4$1,045
Thu 21/508:55
ADL
-
USM
2 stops34h 55m
Multiple Airlines
Wed 27/517:25
USM
-
ADL
2 stops21h 20m
Multiple Airlines
Deal found 21/4$1,081
Mon 18/508:55
ADL
-
USM
2 stops34h 55m
Multiple Airlines
Mon 25/508:00
USM
-
ADL
3 stops30h 20m
Multiple Airlines
Deal found 22/4$1,117
Wed 20/508:55
ADL
-
USM
2 stops34h 55m
Multiple Airlines
Mon 25/508:40
USM
-
ADL
2 stops29h 40m
Multiple Airlines
Deal found 22/4$1,119
Sun 7/608:55
ADL
-
USM
2 stops34h 55m
Multiple Airlines
Sun 14/608:40
USM
-
ADL
2 stops34h 45m
Multiple Airlines
Deal found 23/4$1,130
Tue 19/517:45
ADL
-
USM
2 stops27h 35m
Multiple Airlines
Mon 25/508:40
USM
-
ADL
2 stops30h 05m
Multiple Airlines
Deal found 21/4$1,142
Tue 19/517:45
ADL
-
USM
3 stops27h 35m
Multiple Airlines
Wed 27/517:50
USM
-
ADL
2 stops20h 55m
Multiple Airlines
Deal found 21/4$1,208
Sun 30/809:45
ADL
-
USM
2 stops23h 55m
Malaysia Airlines
Mon 7/907:50
USM
-
ADL
2 stops20h 40m
Malaysia Airlines
Deal found 25/4$1,218

Find flight deals from Adelaide to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Adelaide (ADL) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 26 April 2026.

Round-trip from

$1,043

Popular in

July

Cheapest in

February

Average price

$1,826
13/6-22/6
  • 13/6-22/6
  • 4 total stops
  • 49h 50m total
  • Adelaide to Ko Samui
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($95 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($54 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Adelaide 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 26 April 2026.
Use the filters below to find and compare flights from Adelaide to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sun 7/6

08:55-17:20

2 stops34h 55m

Ko Samui

Sun 14/6

08:40-21:55

2 stops34h 45m

$1,130

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Mon 18/5

07:15-10:10

2 stops29h 25m

Ko Samui

Mon 25/5

08:40-06:25

2 stops19h 15m

$1,219

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 11/6

14:15-18:15

2 stops30h 30m

Ko Samui

Sun 21/6

13:30-11:15

2 stops19h 15m

$1,361

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sun 30/8

17:35-07:45

1 stop16h 40m

Ko Samui

Mon 7/9

08:40-07:25

1 stop20h 15m

$1,382
Fastest return journey

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sat 13/6

09:10-17:20

1 stop10h 40m

Ko Samui

Mon 22/6

08:40-07:25

1 stop20h 15m

$1,496

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sun 14/6

09:10-17:20

1 stop10h 40m

Ko Samui

Tue 23/6

08:40-07:25

1 stop20h 15m

$1,523

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 11/6

09:10-18:50

1 stop12h 10m

Ko Samui

Sun 21/6

08:40-16:20

1 stop29h 10m

$1,591

Flights are sorted by cheapest return flights first.

Deals found on 23/4

Sorted 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.
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 Adelaide to Ko Samui

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

Currently, February is the cheapest month in which you can book a flight from Adelaide to Ko Samui (average of $1,179). Flying from Adelaide to Ko Samui in July is currently the most expensive (average of $1,886). 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 much does it cost for a return flight from Adelaide to Ko Samui?

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 26 April 2026.
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
1,502 reviews
Check prices

Overall

8.2

Food

7.8

Boarding

8.3

Crew

8.6

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,502 reviews
Singapore Airlines
8.2
Very Good
1,502 reviews
Check prices

Overall

8.2

Food

7.8

Boarding

8.3

Crew

8.6

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Qantas Airways
7.5
Good
1,027 reviews
Singapore Airlines
8.2
Very Good
1,502 reviews
Check prices

Overall

8.2

Food

7.8

Boarding

8.3

Crew

8.6

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

Related info for your journey

Find useful and relevant information for your journey from Adelaide 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 are the cheapest airlines flying from Adelaide to Ko Samui round-trip?

    According to our current data, Singapore Airlines ($1,115), and Qantas Airways ($1,122) offers the cheapest pricing from Adelaide to Ko Samui. Singapore Airlines is currently priced 24% 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.

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

    Currently, February is the cheapest month in which you can book a flight from Adelaide to Ko Samui (average of $1,179). Flying from Adelaide to Ko Samui in July is currently the most expensive (average of $1,886). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Adelaide to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Adelaide to Suvarnabhumi flights
Adelaide to Don Mueang Intl flights
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Adelaide to Chiang Mai flights

Top 2 airlines flying from Adelaide to Ko Samui

Discover the top 2 airlines that operate flights from Adelaide 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 26 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,096Average$1,372FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Qantas AirwaysCheapest$1,122Average$1,303FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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