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Cheap flights from Perth to Siem Reap, Cambodia from $377

PER — SAI
21 Oct — 28 Oct1
1 adult
1 adult, 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

Sun 1/1123:10 -
1 stop16h 50m
Mon 9/1110:10 -
1 stop18h 40m
Deal found 16/9$745
Fri 30/1006:40 -
1 stop10h 20m
Sun 8/1110:45 -
1 stop17h 40m
Deal found 16/9$826
Fri 30/1017:30 -
2 stops25h 35m
Sun 8/1110:10 -
1 stop16h 30m
Deal found 16/9$1,097
Sun 27/910:35 -
1 stop12h 20m
Mon 5/1015:35 -
1 stop13h 15m
Deal found 16/9$1,216
Sun 27/910:35 -
1 stop12h 20m
Sun 4/1019:10 -
1 stop12h 45m
Deal found 18/9$1,271
Sat 26/900:25 -
2 stops17h 45m
Sun 4/1018:05 -
2 stops27h 25m
Deal found 18/9$1,532

Find flight deals from Perth to Siem Reap

Round-trip from

$713

One-way from

$377

Popular in

January

Cheapest in

August

Average price

$953
15/2-9/3
  • 15/2-9/3
  • 2 total stops
  • 32h 10m total
  • Perth to Siem Reap
Search Deals
15/11-31/12
  • 15/11-31/12
  • 1 total stop
  • 13h 30m total
  • Perth to Siem Reap
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($291 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($71 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Thu 12/11

00:45-20:30

1 stop20h 45m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$408
Fastest return journey

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Tue 17/11

04:40-15:00

1 stop11h 20m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$434

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Fri 13/11

04:40-19:40

2 stops16h 00m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$445

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Tue 17/11

20:50-16:05

2 stops20h 15m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$586

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Mon 15/2

14:50-09:15

1 stop19h 25m

Siem Reap–Angkor Intl

Tue 9/3

10:00-23:45

1 stop12h 45m

$713

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Sun 1/11

23:10-16:05

2 stops17h 55m

Siem Reap–Angkor Intl

Mon 9/11

10:10-05:50

1 stop18h 40m

$846

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Thu 12/11

22:45-21:10

3 stops47h 25m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$2,380

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Mon 15/2

22:55-18:45

2 stops20h 50m

Siem Reap–Angkor Intl

Tue 9/3

13:20-21:15

3 stops30h 55m

$4,114

Flights are sorted by cheapest return flights first.

Deals found on 18/9

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

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, August is the cheapest month in which you can book a flight from Perth to Siem Reap (average of $735). Flying from Perth to Siem Reap in January is currently the most expensive (average of $1,535). 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?

Airfare is below average for this route at the moment.

Perth to Siem Reap flights typically cost between $757 and $994 in February.
The cheapest return price found within the last 5 days was $713 on Multiple Airlines (15 Feb–9 Mar).

Reviews of airlines servicing Siem Reap

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
1,606 reviews
Check prices

Crew

8.6

Boarding

8.3

Overall

8.2

Comfort

8.0

Food

7.8

Entertainment

8.1

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
1,606 reviews
Singapore Airlines
8.2
Very Good
1,606 reviews
Check prices

Crew

8.6

Boarding

8.3

Overall

8.2

Comfort

8.0

Food

7.8

Entertainment

8.1

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

  • 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 $715 on this airline. You may be able to fly from Perth to Siem Reap for 28% 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, August is the cheapest month in which you can book a flight from Perth to Siem Reap (average of $735). Flying from Perth to Siem Reap in January is currently the most expensive (average of $1,535). 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

Top airline flying from Perth to Siem Reap

AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$715Average$952FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

Fly with Cheapflights

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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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