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Cheap flights from Perth to Siem Reap from $304

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
PER — SAI
18 May — 25 May1
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
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 18 April 2026.

Wed 20/504:55
PER
-
SAI
1 stop10h 55m
Multiple Airlines
Sat 20/617:20
SAI
-
PER
1 stop25h 30m
Multiple Airlines
Deal found 14/4$681
Fri 15/505:35
PER
-
SAI
2 stops34h 15m
Multiple Airlines
Tue 19/516:55
SAI
-
PER
2 stops25h 55m
Multiple Airlines
Deal found 16/4$780
Wed 20/523:55
PER
-
SAI
2 stops22h 35m
Qantas Airways
Sat 20/609:40
SAI
-
PER
3 stops29h 35m
Qantas Airways
Deal found 14/4$5,466

Find flight deals from Perth to Siem Reap

Keep the following information in mind while searching for Perth to Siem Reap flight deals. Data was last updated 18 April 2026.

Round-trip from

$681

One-way from

$304

Popular in

December

Cheapest in

September

Average price

$896
20/5-20/6
  • 20/5-20/6
  • 2 total stops
  • 36h 25m total
  • Perth to Siem Reap
Search Deals
16/8
  • 16/8
  • 1 total stop
  • 11h 05m total
  • Perth to Siem Reap
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($475 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($91 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 18 April 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 20/5

04:55-14:50

1 stop10h 55m

Siem Reap–Angkor Intl

Sat 20/6

17:20-19:50

1 stop25h 30m

$681

PerthSiem Reap

PER - SAI

PERSAI

Perth

Fri 15/5

05:35-14:50

2 stops34h 15m

Siem Reap–Angkor Intl

Tue 19/5

16:55-19:50

2 stops25h 55m

$780

PerthSiem Reap

PER - SAI

PERSAI

Perth

Wed 20/5

23:55-21:30

2 stops22h 35m

Siem Reap–Angkor Intl

Sat 20/6

09:40-16:15

3 stops29h 35m

$5,466
Cheapest one-way
Fastest single journey

PerthSiem Reap

PER - SAI

PERSAI

Perth

Sun 16/8

04:45-14:50

1 stop11h 05m

$304

PerthSiem Reap

PER - SAI

PERSAI

Perth

Fri 11/9

20:50-14:50

1 stop19h 00m

$361

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 16/6

05:35-16:10

3 stops35h 35m

$407

Flights are sorted by cheapest return flights first.

Deals found on 14/4

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 Region of Siem Reap?

Currently, June is the cheapest month in which you can book a flight from Perth to Region of Siem Reap (average of $580). Flying from Perth to Region of Siem Reap in December is currently the most expensive (average of $1,466). 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?

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 18 April 2026.
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
1,497 reviews
Check prices

Food

7.8

Crew

8.6

Overall

8.2

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.2
Very Good
1,497 reviews
Singapore Airlines
8.2
Very Good
1,497 reviews
Check prices

Food

7.8

Crew

8.6

Overall

8.2

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

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 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, June is the cheapest month in which you can book a flight from Perth to Region of Siem Reap (average of $580). Flying from Perth to Region of Siem Reap in December is currently the most expensive (average of $1,466). 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

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Alternative routes for Perth to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.
Perth to Phnom Penh flights
Perth to Siem Reap flights

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 18 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$693Average$853FlexibilityNo 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 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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