Cheap flights from Cairns to Ko Samui from $677

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
CNS — USM
10 Jul — 17 Jul1
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 10 June 2026.

Sat 13/606:45
CNS
-
USM
2 stops30h 25m
Multiple Airlines
Thu 18/618:25
USM
-
CNS
2 stops23h 35m
Multiple Airlines
Deal found 5/6$1,900
Sat 13/612:35
CNS
-
USM
3 stops31h 00m
Cathay Pacific
Thu 18/615:25
USM
-
CNS
3 stops20h 35m
Cathay Pacific
Deal found 5/6$3,548

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 10 June 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 one-way

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Wed 12/8

09:10-13:55

3 stops31h 45m

$704

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Tue 11/8

06:45-10:30

3 stops30h 45m

$734

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sun 9/8

19:15-08:25

2 stops40h 10m

$750

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sat 15/8

19:10-07:45

2 stops39h 35m

$818
Fastest single journey

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 10/8

18:15-07:45

1 stop16h 30m

$1,427

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Wed 12/8

18:15-17:20

1 stop26h 05m

$1,491

Flights are sorted by cheapest return flights first.

Deals found on 9/6

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.

  • 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

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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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