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Cheap flights from Phnom Penh to Sydney from $1,410

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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — SYD
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Phnom Penh Pochentong to Sydney Kingsford Smith are usually found in October or August, booked 67 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap flight deals from Phnom Penh to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Phnom Penh (PNH) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 October 2025.

Popular in

January

Cheapest in

October

Average price

$1,092
Highest demand for flights based on searches. 9% potential increase in price ($212 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($50 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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Find flight deals from Phnom Penh to Sydney

Enter your travel dates to find the best prices.

One-way flights from Phnom Penh to Sydney
Search for one-way flight options from Phnom Penh to Sydney. Find affordable one-way fares based on user searches. Data last updated 17 October 2025.

Thu 6/1123:55PNH - SYD
1 stop28h 25mAsiana Airlines
Deal found 15/10$1,410

Cheapflights Fare Finder

 
Customise your flight search to find flights from Phnom Penh to Sydney 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 17 October 2025.
Use the filters below to find and compare flights from Phnom Penh to Sydney that are best for you.

Fly from

Phnom Penh

Fly to

Sydney

Route

Depart

Return

Price

Phnom PenhSydney

PNH - SYD

PNHSYD

Phnom Penh Pochentong

Thu 6/11

23:55-08:20

1 stop28h 25m

$1,410

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Best time to book a flight from Phnom Penh to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Phnom Penh 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 Phnom Penh to Sydney

How far ahead should I book a flight from Phnom Penh to Sydney?

Use this chart to determine the optimal time to book a return flight from Phnom Penh to Sydney. Price data was last updated on 10 October 2025.

To ensure you get the cheapest price possible for a flight from Phnom Penh to Sydney, you should look to book at least 67 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Phnom Penh to Sydney?

Currently, October is the cheapest month in which you can book a flight from Phnom Penh to Sydney (average of $710). Flying from Phnom Penh to Sydney in February is currently the most expensive (average of $1,230). 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.

What is the cheapest time of day to fly from PNH to SYD?

Find hourly flight availability from Phnom Penh to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 27% on flights from Phnom Penh to Sydney by exploring options for tickets in the morning.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated 17 October 2025.
See what other customers who have flown with Singapore Airlines, Cathay Pacific, andVietnam Airlines from Phnom Penh to Sydney 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
8.1
Very Good
1,382 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.1

Boarding

8.2

Entertainment

8.0

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very Good
1,382 reviews
Singapore Airlines
8.1
Very Good
1,382 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.1

Boarding

8.2

Entertainment

8.0

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Cathay Pacific
7.6
Good
1,028 reviews
Singapore Airlines
8.1
Very Good
1,382 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.1

Boarding

8.2

Entertainment

8.0

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Vietnam Airlines
7.5
Good
203 reviews
Singapore Airlines
8.1
Very Good
1,382 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.1

Boarding

8.2

Entertainment

8.0

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
China Southern
7.4
Good
116 reviews
Singapore Airlines
8.1
Very Good
1,382 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.1

Boarding

8.2

Entertainment

8.0

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Related info for your journey

Find useful and relevant information for your journey from Phnom Penh to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Phnom Penh to Sydney round-trip?

    According to our current data, XiamenAir ($703), China Southern ($707), and Cathay Pacific ($1,030) offers the cheapest pricing from Phnom Penh to Sydney. XiamenAir is 47% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Phnom Penh to Sydney that include hotel bookings?

    Yes. In addition to deals on Phnom Penh to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Phnom Penh to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phnom Penh to Sydney.

  • Can I find deals for business class flights from Phnom Penh to Sydney?

    Yes. Cheapflights offers flight deals from Phnom Penh to Sydney 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 Phnom Penh to Sydney?

    Currently, October is the cheapest month in which you can book a flight from Phnom Penh to Sydney (average of $710). Flying from Phnom Penh to Sydney in February is currently the most expensive (average of $1,230). 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

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Penrith
Manly
Terrigal
Randwick
Coogee
Cronulla
Leura
Lithgow
Bondi Beach

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Phnom Penh to Sydney

Discover the top 5 airlines that operate flights from Phnom Penh to Sydney. 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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
XiamenAirCheapest$703Average$867FlexibilityNo cancel feeOn-time49%
Search XiamenAir flights
China SouthernCheapest$707Average$924FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Cathay PacificCheapest$1,030Average$1,234FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Vietnam AirlinesCheapest$1,123Average$1,261FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest$1,138Average$1,609FlexibilityNo 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 Phnom Penh to Sydney?

Cheapflights makes it easy to find Phnom Penh to Sydney 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 Phnom Penh to Sydney?

Cheapflights helps you find that perfect flight to Sydney from Phnom Penh by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Phnom Penh to Sydney with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Phnom Penh to Sydney, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Phnom Penh to Sydney become cheaper?

Yes! Start tracking prices for Phnom Penh to Sydney 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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