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Cheap flights from Perth to Siem Reap from $748

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Perth to Siem Reap departing on 15/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Perth to Siem Reap

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:50 - 09:15
PER
-
SAI
13h 25m
1 stop
Multiple Airlines Logo
15:35 - 04:15
SAI
-
PER
11h 40m
1 stop
$748Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
20:50 - 09:15
PER
-
SAI
13h 25m
1 stop
Multiple Airlines Logo
15:35 - 04:15
SAI
-
PER
11h 40m
1 stop
$751Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
05:15 - 14:50
PER
-
SAI
10h 35m
1 stop
Multiple Airlines Logo
15:35 - 04:15
SAI
-
PER
11h 40m
1 stop
$752Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
20:50 - 09:15
PER
-
SAI
13h 25m
1 stop
Multiple Airlines Logo
15:35 - 04:15
SAI
-
PER
11h 40m
1 stop
$759Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
20:00 - 14:50
PER
-
SAI
19h 50m
2 stops
Multiple Airlines Logo
15:35 - 05:50
SAI
-
PER
13h 15m
1 stop
$817Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
20:00 - 14:50
PER
-
SAI
19h 50m
2 stops
Multiple Airlines Logo
15:35 - 05:50
SAI
-
PER
13h 15m
1 stop
$824Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
20:00 - 14:50
PER
-
SAI
19h 50m
2 stops
Multiple Airlines Logo
15:35 - 05:50
SAI
-
PER
13h 15m
1 stop
$830Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
20:00 - 14:50
PER
-
SAI
19h 50m
2 stops
Multiple Airlines Logo
15:35 - 05:50
SAI
-
PER
13h 15m
1 stop
$837Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
05:35 - 09:15
PER
-
SAI
28h 40m
2 stops
Multiple Airlines Logo
15:35 - 19:30
SAI
-
PER
26h 55m
2 stops
$917Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep
Multiple Airlines Logo
20:50 - 09:15
PER
-
SAI
13h 25m
1 stop
Multiple Airlines Logo
16:55 - 17:10
SAI
-
PER
47h 15m
3 stops
$924Multiple Airlines
Tue, 15 Sep - Sat, 19 Sep

Qantas Airways flights from Perth to Siem Reap

Our best Qantas Airways deals on Perth to Siem Reap flight tickets
Qantas Airways
8 Apr
PER23:55Perth
22h 35m
2 stops
SAI21:30Siem Reap–Angkor Intl
16 Apr
SAI09:45Siem Reap–Angkor Intl
34h 05m
3 stops
PER20:50Perth
$4,283
Qantas Airways
8 Apr
PER23:55Perth
22h 35m
2 stops
SAI21:30Siem Reap–Angkor Intl
16 Apr
SAI09:45Siem Reap–Angkor Intl
34h 05m
3 stops
PER20:50Perth
$4,539
Qantas Airways
8 Apr
PER23:55Perth
22h 35m
2 stops
SAI21:30Siem Reap–Angkor Intl
16 Apr
SAI09:45Siem Reap–Angkor Intl
34h 05m
3 stops
PER20:50Perth
$4,558

Singapore Airlines flights from Perth to Siem Reap

Our best Singapore Airlines deals on Perth to Siem Reap flight tickets
Singapore Airlines
30 Mar
PER13:45Perth
20h 55m
1 stop
SAI09:40Siem Reap–Angkor Intl
12 Apr
SAI10:30Siem Reap–Angkor Intl
25h 00m
1 stop
PER12:30Perth
$2,215
Singapore Airlines
31 Mar
PER01:10Perth
9h 30m
1 stop
SAI09:40Siem Reap–Angkor Intl
13 Apr
SAI10:30Siem Reap–Angkor Intl
25h 00m
1 stop
PER12:30Perth
$2,218
Singapore Airlines
30 Mar
PER01:10Perth
9h 30m
1 stop
SAI09:40Siem Reap–Angkor Intl
11 Apr
SAI10:30Siem Reap–Angkor Intl
12h 25m
1 stop
PER23:55Perth
$2,460

momondo 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, momondo users made 78,305 searches. Data last updated 26 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

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

20:50-09:15

1 stop13h 25m

Siem Reap–Angkor Intl

Sat 19/9

15:35-04:15

1 stop11h 40m

$748

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

20:50-09:15

1 stop13h 25m

Siem Reap–Angkor Intl

Sat 19/9

15:35-04:15

1 stop11h 40m

$751
Fastest return journey

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

05:15-14:50

1 stop10h 35m

Siem Reap–Angkor Intl

Sat 19/9

15:35-04:15

1 stop11h 40m

$752

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

20:50-09:15

1 stop13h 25m

Siem Reap–Angkor Intl

Sat 19/9

15:35-04:15

1 stop11h 40m

$759

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

20:00-14:50

2 stops19h 50m

Siem Reap–Angkor Intl

Sat 19/9

15:35-05:50

1 stop13h 15m

$817

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

20:00-14:50

2 stops19h 50m

Siem Reap–Angkor Intl

Sat 19/9

15:35-05:50

1 stop13h 15m

$824

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

20:00-14:50

2 stops19h 50m

Siem Reap–Angkor Intl

Sat 19/9

15:35-05:50

1 stop13h 15m

$830

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

20:00-14:50

2 stops19h 50m

Siem Reap–Angkor Intl

Sat 19/9

15:35-05:50

1 stop13h 15m

$837

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

05:35-09:15

2 stops28h 40m

Siem Reap–Angkor Intl

Sat 19/9

15:35-19:30

2 stops26h 55m

$917

PerthSiem Reap

PER - SAI

PERSAI

Perth

Tue 15/9

20:50-09:15

1 stop13h 25m

Siem Reap–Angkor Intl

Sat 19/9

16:55-17:10

3 stops47h 15m

$924

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Siem Reap from

How to get the cheapest flight ticket from Perth to Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Perth and Siem Reap?

What is the cheapest month to fly to Siem Reap?

The cheapest month to fly to Siem Reap from Perth is in September. Flight prices, which tend to average around $739, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Siem Reap from Perth during July instead. Flights to Siem Reap in July, while not as cheap as those in September, still average around $749.

Can stopping save me money on Perth to Siem Reap flights?

You could potentially save up to 16% on your flight if you consider stops on a Perth to Siem Reap flight.

How have Perth to Siem Reap flight prices changed over time?

As of March 2026, prices for Perth to Siem Reap flights are approximately 78% more expensive when compared to flights at the same time last year.

When to book flights from Perth to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from Perth to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Perth to Siem Reap (PER to SAI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Perth to Siem Reap

Fastest flight time

10h 35m

Direct flights

None
The fastest flight from Perth to Siem Reap takes 10h 35m
There are no direct flights from Perth to Siem Reap. There are no popular flight routes from Perth to Siem Reap.
Search flight deals

  • How far is Perth to Siem Reap–Angkor Intl by plane?

    Perth and Siem Reap–Angkor Intl are 5194.5 km apart from one another. In terms of flight time, this usually takes a little over 10h 35m.

  • When did momondo last update prices for flights from Perth Airport to Siem Reap–Angkor Intl Airport?

    Prices for flights from Perth Airport to Siem Reap–Angkor Intl Airport are updated daily.

  • How many operators does momondo search for flights from Perth Airport to Siem Reap–Angkor Intl Airport?

  • How old do you have to be to fly from Perth Airport to Siem Reap–Angkor Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Perth Airport to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The necessary travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Perth to Siem Reap?

Best airlines flying from Perth to Siem Reap

Compare and see reviews for airlines that fly from Perth to Siem Reap with momondo
Airline
Rating
Free cancellation
Price
Singapore AirlinesPriceFrom $657Free cancellationRating
8.2
1,484 reviews
Search Singapore Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Perth to Siem Reap?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Perth to Siem Reap. momondo saves you time and could save you money on your trip.

Can I find flights from Perth to Siem Reap with flexible booking policies on momondo?

Flights from Perth to Siem Reap with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Perth to Siem Reap?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Siem Reap from Perth.

I’m not ready to book a flight from Perth to Siem Reap right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Perth to Siem Reap now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Siem Reap and let you know when they change.

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