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Cheap flights from Adelaide to Ko Samui from $542

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
9 Jun — 16 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 10 May 2026.

Sun 14/618:50
ADL
-
USM
2 stops26h 30m
Multiple Airlines
Tue 23/608:40
USM
-
ADL
2 stops34h 45m
Multiple Airlines
Deal found 6/5$1,073
Wed 10/618:50
ADL
-
USM
2 stops26h 30m
Multiple Airlines
Tue 16/608:40
USM
-
ADL
2 stops34h 45m
Multiple Airlines
Deal found 7/5$1,102
Sun 7/609:15
ADL
-
USM
2 stops34h 35m
Multiple Airlines
Sun 14/608:40
USM
-
ADL
2 stops32h 30m
Multiple Airlines
Deal found 10/5$1,172
Tue 16/609:15
ADL
-
USM
2 stops25h 00m
Multiple Airlines
Sat 27/608:00
USM
-
ADL
2 stops23h 50m
Multiple Airlines
Deal found 8/5$1,270
Thu 29/1007:50
ADL
-
USM
2 stops37h 55m
Qantas Airways
Mon 2/1114:05
USM
-
ADL
2 stops22h 50m
Qantas Airways
Deal found 5/5$1,333
Sat 13/614:20
ADL
-
USM
2 stops30h 25m
Qantas Airways
Thu 25/613:30
USM
-
ADL
2 stops19h 15m
Qantas Airways
Deal found 9/5$1,365
Fri 12/609:45
ADL
-
USM
2 stops23h 55m
Multiple Airlines
Sun 21/621:00
USM
-
ADL
2 stops31h 30m
Multiple Airlines
Deal found 10/5$1,376
Tue 19/506:05
ADL
-
USM
2 stops17h 35m
Qantas Airways
Tue 26/513:30
USM
-
ADL
2 stops19h 55m
Qantas Airways
Deal found 10/5$1,391

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 10 May 2026.

Round-trip from

$1,073

One-way from

$542

Popular in

July

Cheapest in

October

Average price

$1,266
14/6-23/6
  • 14/6-23/6
  • 4 total stops
  • 61h 15m total
  • Adelaide to Ko Samui
Search Deals
15/7
  • 15/7
  • 2 total stops
  • 30h 10m total
  • Adelaide to Ko Samui
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($42 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 May 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 10 May 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

Wed 10/6

18:50-18:50

2 stops26h 30m

Ko Samui

Tue 16/6

08:40-21:55

2 stops34h 45m

$1,102

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 29/10

07:50-18:15

2 stops37h 55m

Ko Samui

Mon 2/11

14:05-16:25

2 stops22h 50m

$1,333

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sat 13/6

14:20-18:15

2 stops30h 25m

Ko Samui

Thu 25/6

13:30-11:15

2 stops19h 15m

$1,365
Fastest return journey

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

$1,455

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sat 13/6

17:35-17:20

1 stop26h 15m

Ko Samui

Thu 25/6

08:40-16:20

1 stop29h 10m

$1,528

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 29/10

10:15-08:00

1 stop25h 15m

Ko Samui

Mon 2/11

12:00-08:50

1 stop17h 20m

$1,578

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Tue 16/6

09:45-07:10

2 stops23h 55m

Ko Samui

Sat 27/6

13:50-07:00

2 stops14h 40m

$1,589
Cheapest one-way

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Fri 15/5

21:45-17:20

2 stops22h 05m

$582

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Wed 1/7

11:00-08:25

2 stops23h 55m

$669
Fastest single journey

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Wed 15/7

09:10-18:50

1 stop12h 10m

$877

Flights are sorted by cheapest return flights first.

Deals found on 7/5

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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

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 10 May 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
1,510 reviews
Check prices

Entertainment

8.0

Crew

8.6

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.2

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
1,510 reviews
Singapore Airlines
8.2
Very Good
1,510 reviews
Check prices

Entertainment

8.0

Crew

8.6

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.2

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
1,034 reviews
Singapore Airlines
8.2
Very Good
1,510 reviews
Check prices

Entertainment

8.0

Crew

8.6

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.2

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

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 37h 55m. 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 are the cheapest airlines flying from Adelaide to Ko Samui round-trip?

    According to our current data, Qantas Airways ($1,107), and Singapore Airlines ($1,146) offers the cheapest pricing from Adelaide to Ko Samui. Qantas Airways is currently priced 25% 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

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
Adelaide to Phuket City flights
Adelaide to Chiang Mai flights
Adelaide to Krabi 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 10 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,107Average$1,285FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Singapore AirlinesCheapest$1,146Average$1,411FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

Fly with Cheapflights

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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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