Find flights
When to book

Cheap flights from Phnom Penh to Sydney

PNH — SYD
28 Nov — 5 Dec1
1 adult
1 adult, Economy, 0 bags

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 Friday or Monday 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 29 October 2025.

Popular in

January

Cheapest in

October

Average price

£533
Highest demand for flights based on searches. 9% potential increase in price (£50 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 24 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 £346). Flying from Phnom Penh to Sydney in February is currently the most expensive (average of £600). 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 29 October 2025.

One of the essential ways to save on airfare from Phnom Penh to Sydney is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 53% on airfare.

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.

  • 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 £346). Flying from Phnom Penh to Sydney in February is currently the most expensive (average of £600). 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
Bondi Beach
Wollongong
Coogee
Manly

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.

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?

Certainly. Search results for flights to Sydney from Phnom Penh shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Phnom Penh to Sydney on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.