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Cheap flights from Adelaide to Ko Samui from $628

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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — USM
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 11 November 2025.

Thu 25/1206:30ADL - USM
2 stops18h 05mMultiple Airlines
Thu 1/108:15USM - ADL
2 stops23h 00mMultiple Airlines
Deal found 9/11$2,585
Thu 25/1210:15ADL - USM
1 stop11h 30mSingapore Airlines
Thu 1/113:25USM - ADL
1 stop24h 25mSingapore Airlines
Deal found 9/11$3,746

Cheap 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 11 November 2025.

Round-trip from

$1,231

One-way from

$628

Popular in

December

Cheapest in

May

Average price

$1,379
Qantas Airways
  • Qantas Airways
  • 7/5-15/5
  • 4 total stops
  • 33h 30m total
  • Adelaide to Ko Samui
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15/2
  • 15/2
  • 3 total stops
  • 53h 30m total
  • Adelaide to Ko Samui
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($322 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($59 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 11 November 2025.
Use the filters below to find and compare flights from Adelaide to Ko Samui that are best for you.

Fly from

Adelaide

Fly to

Ko Samui

Route

Depart

Return

Price

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 7/5

06:30-21:10

2 stops17h 10m

Ko Samui

Fri 15/5

16:25-11:15

2 stops16h 20m

$1,231

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 7/5

06:00-21:10

2 stops17h 40m

Ko Samui

Fri 15/5

14:35-13:40

2 stops20h 35m

$1,233

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Thu 7/5

17:35-16:45

1 stop25h 40m

Ko Samui

Fri 15/5

17:40-16:20

1 stop20h 10m

$1,352

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Tue 31/3

07:50-21:10

2 stops16h 50m

Ko Samui

Tue 7/4

16:25-11:55

2 stops17h 00m

$1,588

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Tue 31/3

10:10-16:45

1 stop10h 05m

Ko Samui

Tue 7/4

08:45-07:25

1 stop20h 10m

$1,628

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sun 22/3

12:00-07:10

2 stops22h 40m

Ko Samui

Mon 23/3

11:40-11:15

2 stops20h 05m

$1,645

AdelaideKo Samui

ADL - USM

ADLUSM

Adelaide

Sun 15/2

06:25-08:25

3 stops53h 30m

$628

Flights are sorted by cheapest return flights first.

Deals found on 10/11

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, March is the cheapest month in which you can book a flight from Adelaide to Ko Samui (average of $855). Flying from Adelaide to Ko Samui in December is currently the most expensive (average of $1,610). 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 11 November 2025.
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
8.1
Very Good
1,396 reviews
Check prices

Comfort

8.0

Food

7.7

Entertainment

8.0

Boarding

8.3

Overall

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.1
Very Good
1,396 reviews
Singapore Airlines
8.1
Very Good
1,396 reviews
Check prices

Comfort

8.0

Food

7.7

Entertainment

8.0

Boarding

8.3

Overall

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

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 and Singapore Airlines fly from Adelaide to Ko Samui in about 17h 10m. The time it takes to get you to your destination can typically vary by up to 8h 30m. The distance between Adelaide and Ko Samui is about 6384 km. This flight may include one or multiple stops.

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

    According to our current data, Singapore Airlines ($1,062), offers the cheapest pricing from Adelaide to Ko Samui. Singapore Airlines is currently priced 28% 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, March is the cheapest month in which you can book a flight from Adelaide to Ko Samui (average of $855). Flying from Adelaide to Ko Samui in December is currently the most expensive (average of $1,610). 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.
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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 11 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,062Average$1,396FlexibilityNo 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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