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Cheap flights from Perth to Siem Reap from $378

PER — SAI
19 Oct — 26 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$827
Fri 30/1017:30 -
2 stops25h 35m
Sun 8/1110:10 -
1 stop16h 30m
Deal found 16/9$1,098
Sun 27/910:35 -
1 stop12h 20m
Mon 5/1015:35 -
1 stop13h 15m
Deal found 16/9$1,217
Sun 27/910:35 -
1 stop12h 20m
Sun 4/1019:10 -
1 stop12h 45m
Deal found 18/9$1,272
Sat 26/900:25 -
2 stops17h 45m
Sun 4/1018:05 -
2 stops27h 25m
Deal found 18/9$1,533

Find flight deals from Perth to Siem Reap

Round-trip from

$745

One-way from

$378

Popular in

January

Cheapest in

August

Average price

$953
1/11-9/11
  • 1/11-9/11
  • 2 total stops
  • 35h 30m total
  • Perth to Siem Reap
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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 ($292 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease ($70 potential savings vs. average return price).
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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

Sun 29/11

20:50-15:00

1 stop19h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$385

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Tue 1/12

20:50-15:00

1 stop19h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$392

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Thu 12/11

20:50-16:05

2 stops20h 15m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$427
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

Mon 30/11

20:50-15:00

1 stop19h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$446

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

$587

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Sat 28/11

00:45-16:10

3 stops40h 25m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$807

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Fri 30/10

06:40-16:00

1 stop10h 20m

Siem Reap–Angkor Intl

Sun 8/11

10:45-05:25

1 stop17h 40m

$827

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

$847

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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 Region of Siem Reap?

Currently, August is the cheapest month in which you can book a flight from Perth to Region of Siem Reap (average of $736). Flying from Perth to Region of Siem Reap in January is currently the most expensive (average of $1,536). 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 Region of Siem Reap?

Airfare is below average for this route at the moment.
Perth to Region of Siem Reap flights typically cost between $757 and $995 in November.
The cheapest return price found within the last 5 days was $745 on Multiple Airlines (1 Nov–9 Nov).

Reviews of airlines servicing Siem Reap

See what other customers who have flown with Singapore Airlines from Perth to Siem Reap have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,604 reviews
Check prices

Food

7.8

Boarding

8.3

Crew

8.7

Comfort

8.0

Overall

8.2

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
1,604 reviews
Singapore Airlines
8.2
Very Good
1,604 reviews
Check prices

Food

7.8

Boarding

8.3

Crew

8.7

Comfort

8.0

Overall

8.2

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 airport do you fly from for flights from Perth to Siem Reap?

    Located just 10.2 km from the city centre, Perth (PER) is the airport most travellers will use when flying to Siem Reap from Perth.

  • How long is the flight from Perth to Region of Siem Reap?

    There are many flights that can get you from Perth to Region of Siem Reap in 10h 20m. Fly via Singapore Airlines to get the fastest option. Airlines will cover a distance of 5189 km.

  • 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 Region of Siem Reap?

    Currently, August is the cheapest month in which you can book a flight from Perth to Region of Siem Reap (average of $736). Flying from Perth to Region of Siem Reap in January is currently the most expensive (average of $1,536). 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

Alternative routes for Perth to Siem Reap

Perth to Siem Reap flights

Top airline flying from Perth to Siem Reap

AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$715Average$953FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

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Yes, Cheapflights offers price alerts on Perth to Siem Reap 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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