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Cheap flights from Cairns to Ko Samui from $503

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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
CNS — USM
16 Jul — 23 Jul1
1 adult

Cheap 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 11 July 2025.

Round-trip from

$1,068

One-way from

$503
25/8-1/9
  • 25/8-1/9
  • 4 total stops
  • 51h 45m total
  • Cairns to Ko Samui
2/8
  • 2/8
  • 2 total stops
  • 37h 00m total
  • Cairns to Ko Samui

Find flight deals from Cairns to Ko Samui

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 11 July 2025.

Mon 25/810:15CNS - USM
2 stops33h 30mMultiple Airlines
Mon 1/908:45USM - CNS
2 stops18h 15mMultiple Airlines
Deal found 10/7$1,068
Sun 17/818:15CNS - USM
1 stop16h 35mSingapore Airlines
Sun 24/817:40USM - CNS
1 stop20h 20mSingapore Airlines
Deal found 9/7$1,827

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 11 July 2025.
Use the filters below to find and compare flights from Cairns to Ko Samui that are best for you.

Fly from

Cairns

Fly to

Ko Samui

Route

Depart

Return

Price

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 25/8

10:15-16:45

2 stops33h 30m

Ko Samui

Mon 1/9

08:45-06:00

2 stops18h 15m

$1,068

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sun 17/8

18:15-07:50

1 stop16h 35m

Ko Samui

Sun 24/8

17:40-17:00

1 stop20h 20m

$1,827

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sat 2/8

06:45-16:45

2 stops37h 00m

$503

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Fri 1/8

18:15-18:30

1 stop27h 15m

$1,548

Flights are sorted by cheapest return flights first.

Deals found on 11/7

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 11 July 2025.
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.

Food

7.7

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

Food

7.7

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

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.

  • What is the cheapest month to book a flight from Cairns to Ko Samui?

    Currently, August is the cheapest month in which you can book a flight from Cairns to Ko Samui (average of $533). Flying from Cairns to Ko Samui in December is currently the most expensive (average of $1,051). 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 Cairns?

Book flights to Cairns if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

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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 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,112Average$1,359FlexibilityNo 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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