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Cheap flights from Cairns to Ko Samui from $535

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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
CNS — USM
17 May — 24 May1
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 April 2026.

Mon 25/506:00
CNS
-
USM
2 stops28h 10m
Multiple Airlines
Thu 2/719:45
USM
-
CNS
2 stops30h 45m
Multiple Airlines
Deal found 16/4$1,209
Thu 28/506:45
CNS
-
USM
2 stops28h 00m
Multiple Airlines
Sat 6/619:45
USM
-
CNS
2 stops30h 45m
Multiple Airlines
Deal found 13/4$1,352
Mon 25/506:45
CNS
-
USM
2 stops28h 00m
Multiple Airlines
Fri 3/708:40
USM
-
CNS
2 stops17h 50m
Multiple Airlines
Deal found 14/4$1,404
Fri 27/1118:20
CNS
-
USM
1 stop25h 50m
Singapore Airlines
Sat 12/1219:45
USM
-
CNS
1 stop18h 35m
Singapore Airlines
Deal found 16/4$1,509
Fri 27/1106:00
CNS
-
USM
2 stops28h 10m
Multiple Airlines
Sat 12/1219:45
USM
-
CNS
2 stops23h 25m
Multiple Airlines
Deal found 16/4$1,560
Mon 25/509:10
CNS
-
USM
2 stops25h 00m
Multiple Airlines
Thu 9/708:40
USM
-
CNS
2 stops23h 20m
Multiple Airlines
Deal found 16/4$1,573

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 April 2026.

Round-trip from

$1,209

One-way from

$535
25/5-2/7
  • 25/5-2/7
  • 4 total stops
  • 58h 55m total
  • Cairns to Ko Samui
Search Deals
25/4
  • 25/4
  • 2 total stops
  • 38h 15m 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 April 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

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Thu 28/5

11:40-07:45

3 stops23h 05m

Ko Samui

Sat 6/6

19:45-05:30

2 stops30h 45m

$1,454

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 25/5

09:10-07:10

2 stops25h 00m

Ko Samui

Thu 9/7

08:40-11:00

2 stops23h 20m

$1,573
Fastest return journey

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 25/5

18:15-07:45

1 stop16h 30m

Ko Samui

Thu 2/7

19:45-00:50

2 stops26h 05m

$1,594

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Wed 10/6

18:15-07:45

1 stop16h 30m

Ko Samui

Sun 14/6

08:40-17:00

1 stop29h 20m

$1,690

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Wed 10/6

14:00-21:35

2 stops34h 35m

Ko Samui

Sun 14/6

13:30-16:15

2 stops23h 45m

$1,704
Cheapest one-way

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 27/4

11:00-07:45

2 stops23h 45m

$588

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Thu 30/4

20:10-20:25

2 stops51h 15m

$627

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Wed 29/4

20:10-20:25

2 stops51h 15m

$662

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sun 26/4

18:15-17:20

1 stop26h 05m

$1,166
Fastest single journey

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Wed 29/4

18:15-07:45

1 stop16h 30m

$1,405

Flights are sorted by cheapest return flights first.

Deals found on 16/4

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.

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 17 April 2026.
See what other customers who have flown with Singapore Airlines from Cairns to Ko Samui have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,497 reviews
Check prices

Food

7.8

Comfort

8.0

Boarding

8.3

Overall

8.2

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Singapore Airlines
8.2
Very Good
1,497 reviews
Singapore Airlines
8.2
Very Good
1,497 reviews
Check prices

Food

7.8

Comfort

8.0

Boarding

8.3

Overall

8.2

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

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.

  • 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.

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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Top airline flying from Cairns to Ko Samui

Discover the top airline that operate flights from Cairns 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 17 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,093Average$1,500FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

Fly with Cheapflights

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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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