How long is the flight from Cairns to Ko Samui?

For as low as $1,894, Singapore Airlines can have you in Ko Samui from Cairns in 25h 50m. The distance from Cairns to Ko Samui is about 5816 km.

What is the cheapest airline to fly from Cairns to Ko Samui round-trip?

Singapore Airlines, at $1,312, was found to be the cheapest airline from Cairns to Ko Samui..

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

What is the cheapest time of day to fly from CNS to USM?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Cairns to Ko Samui as you normally would.

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.

$1,330+ Cheap Flights from Cairns to Ko Samui

Cheap flight deals from Cairns to Ko Samui

Enter your travel dates to find the best prices.

Cheapest

Best

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 31 August 2026.

Thu 15/1006:00 -

2 stops28h 10m

Thu 22/1007:50 -

2 stops35h 40m

Deal found 31/8$1,330

Thu 15/1015:45 -

3 stops32h 25m

Thu 22/1014:35 -

2 stops23h 20m

Deal found 31/8$2,029

Find flight deals from Cairns to Ko Samui

Round-trip from	$1,894

Singapore Airlines
24/2-27/2
2 total stops
55h 10m total
Cairns to Ko Samui

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CairnsKo Samui

CNS Cairns - USM Ko Samui

CNSUSM

Cairns

Thu 15/10

06:00-07:10

2 stops28h 10m

Ko Samui

Thu 22/10

07:50-22:30

2 stops35h 40m

$1,330

CairnsKo Samui

CNS Cairns - USM Ko Samui

CNSUSM

Cairns

Wed 24/2

18:20-17:10

1 stop25h 50m

Ko Samui

Sat 27/2

08:55-17:15

1 stop29h 20m

$1,894

Fastest return journey

CairnsKo Samui

CNS Cairns - USM Ko Samui

CNSUSM

Cairns

Wed 24/2

15:40-21:05

2 stops32h 25m

Ko Samui

Sat 27/2

13:25-10:55

2 stops18h 30m

$2,268

Flights are sorted by cheapest return flights first.

Deals found on 31/8

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.

CNS-USM

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

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

1,591 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Singapore Airlines

8.2

Very Good

1,591 reviews

Singapore Airlines

8.2

Very Good

1,591 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Related info for your journey

How long is the flight from Cairns to Ko Samui?
For as low as $1,894, Singapore Airlines can have you in Ko Samui from Cairns in 25h 50m. The distance from Cairns to Ko Samui is about 5816 km.
What is the cheapest airline to fly from Cairns to Ko Samui round-trip?
Singapore Airlines, at $1,312, was found to be the cheapest airline from Cairns to Ko Samui..
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.

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Top airline flying from Cairns to Ko Samui

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$1,312	Average$1,621	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights

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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?

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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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Cheap flights from Cairns to Ko Samui from $1,330

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Cairns to Ko Samui

Cheapest flights from Cairns to Ko SamuiExplore 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 31 August 2026.

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 31 August 2026.

Best flights from Cairns to Ko SamuiDiscover carefully curated flight deals from Cairns to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Discover carefully curated flight deals from Cairns to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Find flight deals from Cairns to Ko Samui

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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.

Reviews of airlines servicing Ko Samui

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.

Related info for your journey

How long is the flight from Cairns to Ko Samui?

What is the cheapest airline to fly from Cairns to Ko Samui round-trip?

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

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

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

Travelling to a place near Ko Samui?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Cairns to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ko Samui by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Thailand

Book a non-stop flight to one of these other cities located in Thailand.

Search flights from Cairns to Ko Samui by cabin class

Find flights from Cairns to Ko Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ko Samui

Explore flights to Ko Samui departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 31 August 2026.

Cairns and Ko Samui flights

Browse other Cairns and Ko Samui flight options. Last updated on 31 August 2026.

Other flights from Cairns

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Top airline flying from Cairns to Ko Samui

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

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

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

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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 31 August 2026.

Best flights from Cairns to Ko Samui
Discover carefully curated flight deals from Cairns to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.