Find flights
When to book
FAQs

Cheap flights from Cairns to Ko Samui from $808

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 22/3. Fares are subject to change and may not be available on all flights or dates of travel.
CNS — USM
16 Apr — 23 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cairns to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Cairns to Ko Samui
Explore the most affordable flight options available from Cairns to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 March 2026.

Wed 29/406:45
CNS
-
USM
2 stops28h 00m
Multiple Airlines
Wed 6/519:45
USM
-
CNS
2 stops19h 40m
Multiple Airlines
Deal found 14/3$1,006
Fri 19/611:40
CNS
-
USM
3 stops34h 10m
Multiple Airlines
Tue 23/619:45
USM
-
CNS
2 stops30h 45m
Multiple Airlines
Deal found 14/3$1,415
Mon 11/518:15
CNS
-
USM
1 stop16h 30m
Singapore Airlines
Thu 14/508:40
USM
-
CNS
1 stop29h 20m
Singapore Airlines
Deal found 15/3$1,422
Fri 19/618:15
CNS
-
USM
1 stop26h 05m
Singapore Airlines
Tue 23/608:40
USM
-
CNS
1 stop29h 20m
Singapore Airlines
Deal found 14/3$1,430
Sat 20/611:40
CNS
-
USM
3 stops23h 05m
Multiple Airlines
Tue 23/618:15
USM
-
CNS
2 stops32h 15m
Multiple Airlines
Deal found 14/3$1,441

Find flight deals from Cairns to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Cairns (CNS) 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 17 March 2026.

Round-trip from

$1,006

One-way from

$808
29/4-6/5
  • 29/4-6/5
  • 4 total stops
  • 47h 40m total
  • Cairns to Ko Samui
Search Deals
22/3
  • 22/3
  • 3 total stops
  • 34h 45m total
  • Cairns to Ko Samui
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cairns 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 17 March 2026.
Use the filters below to find and compare flights from Cairns to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Wed 29/4

06:45-07:45

2 stops28h 00m

Ko Samui

Wed 6/5

19:45-18:25

2 stops19h 40m

$1,006

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 11/5

18:15-17:20

1 stop26h 05m

Ko Samui

Thu 14/5

08:40-17:00

1 stop29h 20m

$1,422

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Fri 19/6

18:15-17:20

1 stop26h 05m

Ko Samui

Tue 23/6

08:40-17:00

1 stop29h 20m

$1,430

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 11/5

09:25-18:15

2 stops59h 50m

Ko Samui

Thu 14/5

08:20-11:50

2 stops24h 30m

$1,478

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sat 20/6

12:00-07:45

2 stops22h 45m

Ko Samui

Tue 23/6

19:45-05:30

2 stops30h 45m

$1,492
Cheapest one-way

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 23/3

09:15-08:05

3 stops49h 50m

$825

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Tue 24/3

06:40-08:00

2 stops28h 20m

$905
Fastest single journey

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 23/3

18:35-17:10

1 stop25h 35m

$1,323

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sun 22/3

18:35-17:10

1 stop25h 35m

$1,391

Flights are sorted by cheapest return flights first.

Deals found on 16/3

Sorted by cheapest first

Best time to book a flight from Cairns to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Cairns 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.

Related info for your journey

Find useful and relevant information for your journey from Cairns 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 Cairns to Ko Samui?

    For as low as $1,422, Singapore Airlines can have you in Ko Samui from Cairns in 26h 05m. The distance from Cairns to Ko Samui is about 5816 km.

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

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

  • How can I find direct flights from Cairns to Ko Samui?

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

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

    Yes. Cheapflights offers flight deals from Cairns 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

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

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 Cairns to Ko Samui?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Cairns to Ko Samui. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Cairns to Ko Samui for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Ko Samui from Cairns shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Cairns to Ko Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.