In terms of precipitation, rainfall in Region of Siem Reap ranges from 0.0 - 260.0 inches per month. September is typically the wettest month, when rainfall can reach 260.0 mm. January is typically the driest time to visit Region of Siem Reap when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Region of Siem Reap, 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 December, when temperatures are typically at their lowest (around 24.0 C).

What is the cheapest time of day to fly from PER to SI?

When flying from Perth to Region of Siem Reap, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

$482+ Cheap Flights from Perth to Siem Reap

Cheap flight deals from Perth to Siem Reap

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 6 November 2026.

Sun 22/1120:50 -

1 stop19h 00m

Sun 29/1116:50 -

2 stops14h 35m

Deal found 4/11$986

Thu 17/1200:55 -

2 stops17h 30m

Fri 25/1216:50 -

1 stop12h 25m

Deal found 2/11$1,796

Fri 18/1217:30 -

2 stops25h 35m

Fri 25/1219:05 -

2 stops44h 20m

Deal found 2/11$1,878

Find flight deals from Perth to Siem Reap

Round-trip from	$610
One-way from	$482
Popular in	January
Cheapest in	February
Average price	$767

Singapore Airlines
23/2-23/3
2 total stops
22h 40m total
Perth to Siem Reap

Search Deals

7/1-31/12
1 total stop
33h 05m total
Perth to Siem Reap

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($306 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($107 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Thu 7/1

07:25-09:15

2 stops26h 50m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$511

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Wed 6/1

23:10-14:50

1 stop16h 40m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$541

Fastest return journey

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Sat 5/12

04:40-14:50

1 stop11h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$617

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Sun 6/12

17:30-18:05

2 stops49h 35m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$932

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Sun 6/12

17:30-18:05

2 stops49h 35m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$932

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Fri 4/12

17:30-18:05

2 stops49h 35m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$940

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Sun 6/12

17:30-18:05

2 stops49h 35m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$963

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Sun 22/11

20:50-14:50

1 stop19h 00m

Siem Reap–Angkor Intl

Sun 29/11

16:50-08:25

2 stops14h 35m

$986

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Thu 3/12

00:45-16:10

3 stops40h 25m

Siem Reap–Angkor Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

$1,058

PerthSiem Reap

PER Perth - SAI Siem Reap–Angkor Intl

PERSAI

Perth

Sun 3/1

04:40-14:50

1 stop11h 10m

Siem Reap–Angkor Intl

Mon 18/1

15:35-03:40

1 stop11h 05m

$1,353

Flights are sorted by cheapest return flights first.

Deals found on 1/11

Showing 1-10 of 12 resultsSorted 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.

PER-SAI

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

PER-KHSI

PER-SAI

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

Currently, February is the cheapest month in which you can book a flight from Perth to Region of Siem Reap (average of $728). Flying from Perth to Region of Siem Reap in January is currently the most expensive (average of $1,859). 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 $760 and $857 in February.
The cheapest return price found within the last 5 days was $610 on Singapore Airlines (23 Feb–23 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. 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

1,632 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

1,632 reviews

Singapore Airlines

8.2

Very Good

1,632 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

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.
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, February is the cheapest month in which you can book a flight from Perth to Region of Siem Reap (average of $728). Flying from Perth to Region of Siem Reap in January is currently the most expensive (average of $1,859). 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

Complete your trip

Direct flights to

Flights by cabin class

Other flight options

Popular flights

Alternative routes for Perth to Siem Reap

Perth to Siem Reap flights

Top airline flying from Perth to Siem Reap

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$728	Average$972	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Perth to Siem Reap flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Perth to Siem Reap for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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, 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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Cheap flights from Perth to Siem Reap from $482

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Perth to Siem Reap

Cheapest flights from Perth to Siem ReapExplore 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 6 November 2026.

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 6 November 2026.

Best flights from Perth to Siem ReapDiscover carefully curated flight deals from Perth to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 November 2026.

Discover carefully curated flight deals from Perth to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 November 2026.

Last-minute flights from Perth to Siem ReapDiscover last-minute flight deals from Perth to Siem Reap. Data last updated 6 November 2026 and is based on user searches.

Discover last-minute flight deals from Perth to Siem Reap. Data last updated 6 November 2026 and is based on user searches.

One-way flights from Perth to Siem ReapSearch for one-way flight options from Perth to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 6 November 2026.

Search for one-way flight options from Perth to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 6 November 2026.

Find flight deals from Perth to Siem Reap

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Perth to Siem Reap that are best for you.

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.

Cheapflights Insights

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

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 $760 and $857 in February.The cheapest return price found within the last 5 days was $610 on Singapore Airlines (23 Feb–23 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. 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.

Related info for your journey

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Perth to Siem Reap

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

Complete your trip

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

Direct flights to

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

Search flights from Perth to Siem Reap by cabin class

Find flights from Perth to Siem Reap, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Perth and Siem Reap flights

Browse other Perth and Siem Reap flight options. Last updated on 6 November 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top airline flying from Perth to Siem Reap

Fly with Cheapflights

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

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

Can Cheapflights 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?

100% Free

Book with flexibility

Travel Smart

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 6 November 2026.

Best flights from Perth to Siem Reap
Discover carefully curated flight deals from Perth to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 November 2026.

Last-minute flights from Perth to Siem Reap
Discover last-minute flight deals from Perth to Siem Reap. Data last updated 6 November 2026 and is based on user searches.

One-way flights from Perth to Siem Reap
Search for one-way flight options from Perth to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 6 November 2026.

Perth to Region of Siem Reap flights typically cost between $760 and $857 in February.
The cheapest return price found within the last 5 days was $610 on Singapore Airlines (23 Feb–23 Mar).