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Cheap flights from Cairns to Ko Samui from $489

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 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
CNS — USM
31 Aug — 7 Sep1
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 1 August 2026.

Mon 7/1209:45
CNS
-
USM
3 stops25h 15m
Multiple Airlines
Sat 12/1208:55
USM
-
CNS
2 stops17h 50m
Multiple Airlines
Deal found 29/7$1,236
Sat 12/906:45
CNS
-
USM
2 stops28h 00m
Multiple Airlines
Sat 19/918:15
USM
-
CNS
2 stops25h 10m
Multiple Airlines
Deal found 29/7$1,326
Wed 21/1006:00
CNS
-
USM
2 stops18h 10m
Qantas Airways
Wed 28/1013:25
USM
-
CNS
2 stops18h 40m
Qantas Airways
Deal found 30/7$1,495
Mon 5/1012:00
CNS
-
USM
2 stops33h 50m
Multiple Airlines
Sun 11/1019:45
USM
-
CNS
2 stops43h 45m
Multiple Airlines
Deal found 30/7$1,521
Mon 19/1012:40
CNS
-
USM
2 stops35h 55m
Qantas Airways
Wed 28/1013:25
USM
-
CNS
2 stops30h 15m
Qantas Airways
Deal found 30/7$1,545
Tue 20/1017:40
CNS
-
USM
2 stops30h 30m
Qantas Airways
Wed 28/1013:25
USM
-
CNS
2 stops30h 15m
Qantas Airways
Deal found 30/7$1,552
Mon 19/1012:40
CNS
-
USM
2 stops35h 55m
Qantas Airways
Thu 29/1013:25
USM
-
CNS
2 stops18h 40m
Qantas Airways
Deal found 30/7$1,554
Sun 18/1018:15
CNS
-
USM
1 stop16h 30m
Singapore Airlines
Tue 27/1018:05
USM
-
CNS
1 stop20h 15m
Singapore Airlines
Deal found 30/7$1,559
Tue 20/1009:25
CNS
-
USM
2 stops38h 45m
Qantas Airways
Thu 29/1013:25
USM
-
CNS
2 stops18h 40m
Qantas Airways
Deal found 30/7$1,561

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 1 August 2026.

Round-trip from

$1,236

One-way from

$489
7/12-12/12
  • 7/12-12/12
  • 5 total stops
  • 43h 05m total
  • Cairns to Ko Samui
Search Deals
20/1
  • 20/1
  • 2 total stops
  • 39h 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 1 August 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

Mon 7/12

09:45-08:00

3 stops25h 15m

Ko Samui

Sat 12/12

08:55-05:45

2 stops17h 50m

$1,236

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sat 12/9

06:45-07:45

2 stops28h 00m

Ko Samui

Sat 19/9

18:15-22:25

2 stops25h 10m

$1,326

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Thu 22/10

06:00-18:15

2 stops39h 15m

Ko Samui

Wed 28/10

13:25-22:40

2 stops30h 15m

$1,552

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Fri 23/10

11:20-18:15

2 stops33h 55m

Ko Samui

Wed 28/10

13:25-22:40

2 stops30h 15m

$1,592

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sat 24/10

11:20-18:15

2 stops33h 55m

Ko Samui

Thu 29/10

13:25-11:05

2 stops18h 40m

$1,601

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Thu 22/10

06:00-18:15

2 stops39h 15m

Ko Samui

Tue 27/10

13:25-19:20

2 stops26h 55m

$1,608

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sun 18/10

11:20-18:15

2 stops33h 55m

Ko Samui

Tue 27/10

13:25-19:20

2 stops26h 55m

$1,703

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 19/10

18:15-18:50

1 stop27h 35m

Ko Samui

Thu 29/10

18:05-17:20

1 stop20h 15m

$1,942
Cheapest one-way

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sun 17/1

19:50-07:10

3 stops38h 20m

$643

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Thu 20/8

19:10-07:45

2 stops39h 35m

$723

Flights are sorted by cheapest return flights first.

Deals found on 30/7

Showing 1-10 of 15 resultsSorted by cheapest first
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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 $1,552, Qantas Airways can have you in Ko Samui from Cairns in 39h 15m. 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

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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.

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