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Cheap flights from Adelaide to Ko Samui from $514

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — USM
6 Apr — 13 Apr1
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 7 March 2026.

Wed 15/407:05
ADL
-
USM
2 stops27h 10m
Multiple Airlines
Wed 22/408:40
USM
-
ADL
2 stops19h 15m
Multiple Airlines
Deal found 3/3$890
Sun 19/407:05
ADL
-
USM
2 stops27h 10m
Multiple Airlines
Sun 26/408:40
USM
-
ADL
2 stops19h 15m
Multiple Airlines
Deal found 5/3$910
Fri 17/407:05
ADL
-
USM
2 stops27h 10m
Multiple Airlines
Fri 24/408:40
USM
-
ADL
2 stops19h 15m
Multiple Airlines
Deal found 5/3$931
Thu 30/408:05
ADL
-
USM
2 stops37h 15m
Multiple Airlines
Thu 7/508:40
USM
-
ADL
2 stops19h 15m
Multiple Airlines
Deal found 6/3$954
Sat 28/308:05
ADL
-
USM
2 stops27h 10m
Multiple Airlines
Tue 31/308:40
USM
-
ADL
2 stops19h 15m
Multiple Airlines
Deal found 6/3$977
Mon 14/908:05
ADL
-
USM
2 stops35h 45m
Multiple Airlines
Thu 24/911:05
USM
-
ADL
2 stops16h 50m
Multiple Airlines
Deal found 3/3$1,085
Sun 30/817:10
ADL
-
USM
2 stops30h 10m
Qantas Airways
Mon 7/913:30
USM
-
ADL
2 stops21h 35m
Qantas Airways
Deal found 6/3$1,200
Sat 31/1018:35
ADL
-
USM
1 stop16h 55m
Singapore Airlines
Sat 7/1118:05
USM
-
ADL
1 stop19h 45m
Singapore Airlines
Deal found 2/3$1,243
Mon 18/510:10
ADL
-
USM
2 stops29h 30m
Qantas Airways
Wed 20/513:30
USM
-
ADL
2 stops25h 45m
Qantas Airways
Deal found 6/3$1,249

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 7 March 2026.

Round-trip from

$890

One-way from

$514

Popular in

July

Cheapest in

February

Average price

$1,487
15/4-22/4
  • 15/4-22/4
  • 4 total stops
  • 46h 25m total
  • Adelaide to Ko Samui
Search Deals
15/7
  • 15/7
  • 2 total stops
  • 27h 00m total
  • Adelaide to Ko Samui
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($169 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($67 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 7 March 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 30/8

19:10-20:30

2 stops27h 50m

Ko Samui

Mon 7/9

16:25-17:45

2 stops22h 50m

$1,209

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Mon 18/5

10:10-13:10

2 stops29h 30m

Ko Samui

Wed 20/5

13:30-17:45

2 stops25h 45m

$1,249

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sun 3/5

07:50-18:15

2 stops36h 55m

Ko Samui

Thu 7/5

13:30-11:15

2 stops19h 15m

$1,290
Fastest return journey

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sun 30/8

09:10-20:30

2 stops13h 50m

Ko Samui

Mon 7/9

16:25-07:25

1 stop12h 30m

$1,354

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sun 30/8

17:35-07:45

1 stop16h 40m

Ko Samui

Mon 7/9

18:15-07:25

1 stop10h 40m

$1,447
Cheapest one-way
Fastest single journey

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Wed 15/7

07:15-07:45

2 stops27h 00m

$514

Flights are sorted by cheapest return flights first.

Deals found on 6/3

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, October is the cheapest month in which you can book a flight from Adelaide to Ko Samui (average of $1,020). Flying from Adelaide to Ko Samui in July is currently the most expensive (average of $1,693). 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.

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 7 March 2026.
Read through reviews of airlines operating flights from Adelaide to Ko Samui, such as Singapore Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,470 reviews
Check prices

Overall

8.2

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Food

7.8

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
1,470 reviews
Singapore Airlines
8.2
Very Good
1,470 reviews
Check prices

Overall

8.2

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Food

7.8

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.

  • How long is the flight from Adelaide to Ko Samui?

    Airlines like Qantas Airways fly from Adelaide to Ko Samui in about 27h 50m. The time it takes to get you to your destination can typically vary by up to . The distance between Adelaide and Ko Samui is about 6384 km.

  • What is the cheapest airline to fly from Adelaide to Ko Samui round-trip?

    According to our current data, Singapore Airlines ($1,081), offers the cheapest pricing from Adelaide to Ko Samui. Singapore Airlines is currently priced 26% 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, October is the cheapest month in which you can book a flight from Adelaide to Ko Samui (average of $1,020). Flying from Adelaide to Ko Samui in July is currently the most expensive (average of $1,693). 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 Phuket City flights
Adelaide to Don Mueang Intl flights
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Adelaide to Chiang Mai flights

Top airline flying from Adelaide to Ko Samui

Discover the top airline 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 7 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,081Average$1,381FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines 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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