Cheap flights from Cairns to Siem Reap, Cambodia from $519

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
CNS — SAI
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cairns to Siem Reap

Enter your travel dates to find the best prices.

One-way flights from Cairns to Siem Reap
Search for one-way flight options from Cairns to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 13 February 2026.

Sun 1/319:30
CNS
-
SAI
3 stops46h 30m
Multiple Airlines
Deal found 11/2$519
Fri 20/319:30
CNS
-
SAI
2 stops39h 50m
Multiple Airlines
Deal found 12/2$598
Fri 20/318:35
CNS
-
SAI
1 stop18h 15m
Singapore Airlines
Deal found 12/2$860
Sun 1/318:35
CNS
-
SAI
1 stop24h 20m
Singapore Airlines
Deal found 11/2$861

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cairns to Siem Reap 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 13 February 2026.
Use the filters below to find and compare flights from Cairns to Siem Reap that are best for you.

Fly from

Cairns

Fly to

Siem Reap

Route

Depart

Return

Price

CairnsSiem Reap

CNS - SAI

CNSSAI

Cairns

Sun 1/3

19:30-15:00

3 stops46h 30m

$519

CairnsSiem Reap

CNS - SAI

CNSSAI

Cairns

Fri 20/3

19:30-08:20

2 stops39h 50m

$598

CairnsSiem Reap

CNS - SAI

CNSSAI

Cairns

Fri 20/3

18:35-09:50

1 stop18h 15m

$860

CairnsSiem Reap

CNS - SAI

CNSSAI

Cairns

Sun 1/3

18:35-15:55

1 stop24h 20m

$861

Flights are sorted by cheapest return flights first.

Deals found on 11/2

Best time to book a flight from Cairns to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap 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 Siem Reap. 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 Siem Reap that include hotel bookings?

    Yes. In addition to deals on Cairns to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cairns to Siem Reap?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cairns to Siem Reap.

  • Can I find deals for business class flights from Cairns to Siem Reap?

    Yes. Cheapflights offers flight deals from Cairns to Siem Reap 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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Why should you use Cheapflights to find cheap flight tickets from Cairns to Siem Reap?

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Can Cheapflights find flights from Cairns to Siem Reap with no change fees?

Need flexible booking options for your flight to Siem Reap from Cairns? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Cairns to Siem Reap become cheaper?

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