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Cheap flights from Perth to Siem Reap, Cambodia from $695

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
PER — SAI
22 Apr — 29 Apr2
2 travellers
2 travellers, Economy, 0 bags

Cheap flight deals from Perth to Siem Reap

Enter your travel dates to find the best prices.

Cheapest flights from Perth to Siem Reap
Explore the most affordable flight options available from Perth to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 March 2026.

Sat 2/523:15
PER
-
SAI
1 stop11h 00m
Multiple Airlines
Sat 9/515:35
SAI
-
PER
1 stop23h 40m
Multiple Airlines
Deal found 18/3$695
Mon 14/901:35
PER
-
SAI
1 stop14h 15m
Multiple Airlines
Sat 19/919:05
SAI
-
PER
2 stops36h 50m
Multiple Airlines
Deal found 20/3$705

Find flight deals from Perth to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from Perth (PER) to Siem Reap (SAI). 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 23 March 2026.

Round-trip from

$695

Popular in

December

Cheapest in

September

Average price

$785
2/5-9/5
  • 2/5-9/5
  • 2 total stops
  • 34h 40m total
  • Perth to Siem Reap
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($466 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($80 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Perth 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 23 March 2026.
Use the filters below to find and compare flights from Perth to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

PerthSiem Reap

PER - SAI

PERSAI

Perth

Wed 8/4

20:50-14:50

1 stop19h 00m

Siem Reap–Angkor Intl

Thu 16/4

15:35-04:15

1 stop11h 40m

$956

PerthSiem Reap

PER - SAI

PERSAI

Perth

Wed 1/4

00:10-18:45

2 stops19h 35m

Siem Reap–Angkor Intl

Mon 13/4

19:30-22:40

2 stops26h 10m

$2,159

PerthSiem Reap

PER - SAI

PERSAI

Perth

Mon 30/3

13:45-09:40

1 stop20h 55m

Siem Reap–Angkor Intl

Sun 12/4

10:30-12:30

1 stop25h 00m

$2,197

PerthSiem Reap

PER - SAI

PERSAI

Perth

Mon 30/3

00:25-18:20

1 stop18h 55m

Siem Reap–Angkor Intl

Sat 11/4

18:05-22:30

2 stops51h 25m

$3,151

PerthSiem Reap

PER - SAI

PERSAI

Perth

Mon 30/3

00:25-16:25

3 stops41h 00m

Siem Reap–Angkor Intl

Sun 12/4

19:10-22:30

1 stop26h 20m

$3,157

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Sorted by cheapest first

Best time to book a flight from Perth to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Perth 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.

Cheapflights Insights

Everything you need to know about your flight from Perth to Siem Reap

What is the cheapest month to book a flight from Perth to Siem Reap?

Currently, June is the cheapest month in which you can book a flight from Perth to Siem Reap (average of $607). Flying from Perth to Siem Reap in December is currently the most expensive (average of $1,363). 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.

How much does it cost for a return flight from Perth to Siem Reap?

Reviews of airlines servicing Siem Reap

Get insights into the airlines that provide service to Siem Reap. 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 Siem Reap. Reviews last updated 23 March 2026.
See what other customers who have flown with Singapore Airlines from Perth to Siem Reap 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
1,484 reviews
Check prices

Boarding

8.3

Crew

8.6

Comfort

8.0

Entertainment

8.0

Food

7.8

Overall

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,484 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Boarding

8.3

Crew

8.6

Comfort

8.0

Entertainment

8.0

Food

7.8

Overall

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

Related info for your journey

Find useful and relevant information for your journey from Perth to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Perth to Siem Reap round-trip?

    Our cheapest airline available from Perth to Siem Reap is Singapore Airlines. Our recent data shows that you can find tickets from as low as $651 on this airline. You may be able to fly from Perth to Siem Reap for 27% less than the average price by searching for this airline.

  • Can I find deals for flights from Perth to Siem Reap that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Perth 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.

  • What is the cheapest month to book a flight from Perth to Siem Reap?

    Currently, June is the cheapest month in which you can book a flight from Perth to Siem Reap (average of $607). Flying from Perth to Siem Reap in December is currently the most expensive (average of $1,363). 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Perth to Siem Reap

Discover the top airline that operate flights from Perth to Siem Reap. 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 23 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$651Average$798FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Perth to Siem Reap?

Cheapflights helps you search for flights from Perth to Siem Reap via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Perth to Siem Reap?

Cheapflights simply makes it quick and affordable to book flights from Perth to Siem Reap by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes! Cheapflights helps users easily find flights from Perth to Siem Reap with no change fees.

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

Yes! Start tracking prices for Perth to Siem Reap flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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