Sydney

Cheap flights from Philadelphia (PHL) to Sydney (SYD) - Compare and Save

PHL — SYD
May 4 — May 111
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Cheap flight deals from Philadelphia to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) 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 April 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$960
(Trip.com)

One-way from

$502
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$959
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
From Philadelphia to Sydney Kingsford Smith
One-way flight from Philadelphia to Sydney Kingsford Smith
Highest demand for flights based on searches. 11% potential increase in price ($189 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Find flight deals from Philadelphia to Sydney

Cheapest flights from Philadelphia to Sydney
Explore the most affordable flight options available from Philadelphia to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2026.

This Trip.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:41 pm
PHL
-
SYD
3 stops54h 09m
Multiple Airlines
Tue 4/216:00 am
SYD
-
PHL
3 stops44h 15m
Multiple Airlines
Deal found 3/30$960
This Trip.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:00 am
PHL
-
SYD
3 stops37h 50m
Multiple Airlines
Wed 4/296:00 am
SYD
-
PHL
3 stops37h 13m
Multiple Airlines
Deal found 4/1$1,017
This Trip.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:55 am
PHL
-
SYD
3 stops37h 55m
Multiple Airlines
Thu 5/216:00 am
SYD
-
PHL
3 stops61h 37m
Multiple Airlines
Deal found 3/30$1,023
This Trip.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:05 am
PHL
-
SYD
3 stops41h 00m
Multiple Airlines
Sun 4/261:15 pm
SYD
-
PHL
3 stops42h 19m
Multiple Airlines
Deal found 3/30$1,136
This Trip.com deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:47 pm
PHL
-
SYD
3 stops33h 03m
Multiple Airlines
Sun 5/101:15 pm
SYD
-
PHL
3 stops54h 22m
Multiple Airlines
Deal found 4/3$1,143
This Trip.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:00 am
PHL
-
SYD
3 stops37h 50m
Multiple Airlines
Sun 4/261:15 pm
SYD
-
PHL
3 stops36h 25m
Multiple Airlines
Deal found 4/1$1,194
This Trip.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:00 am
PHL
-
SYD
3 stops48h 10m
Multiple Airlines
Mon 4/271:15 pm
SYD
-
PHL
3 stops31h 35m
Multiple Airlines
Deal found 4/1$1,240
This Trip.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:00 am
PHL
-
SYD
2 stops33h 30m
Multiple Airlines
Tue 5/55:50 pm
SYD
-
PHL
2 stops32h 35m
Multiple Airlines
Deal found 3/29$1,286
This oojo deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:00 pm
PHL
-
SYD
1 stop25h 55m
Qantas Airways
Sun 11/81:00 pm
SYD
-
PHL
2 stops47h 03m
Qantas Airways
Deal found 4/1$1,303
This oojo deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:45 am
PHL
-
SYD
1 stop29h 25m
Qantas Airways
Sun 11/156:00 am
SYD
-
PHL
2 stops24h 37m
Qantas Airways
Deal found 3/31$1,308
This Vliegwinkel deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/195:05 am
PHL
-
SYD
2 stops36h 25m
Multiple Airlines
Sun 5/35:50 pm
SYD
-
PHL
2 stops37h 44m
Multiple Airlines
Deal found 4/2$1,318
This oojo deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:00 pm
PHL
-
SYD
2 stops26h 55m
Qantas Airways
Sun 12/139:25 pm
SYD
-
PHL
1 stop26h 15m
Qantas Airways
Deal found 3/31$1,344

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 2,558,603 searches. Data last updated April 4, 2026.
Use the filters below to find and compare flights from Philadelphia to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 4/28

3:51 pm-6:25 am

1 stop24h 34m

Sydney Kingsford Smith

Tue 5/5

9:10 am-6:54 pm

1 stop23h 44m

$1,451
Quickest round-trip

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 6/1

5:30 pm-6:55 am

2 stops23h 25m

Sydney Kingsford Smith

Wed 6/10

9:10 am-6:21 pm

2 stops23h 11m

$1,457

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 4/18

5:30 pm-7:05 am

2 stops23h 35m

Sydney Kingsford Smith

Sat 4/25

5:50 pm-7:20 am

1 stop27h 30m

$1,557

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 6/27

3:29 pm-7:05 am

1 stop25h 36m

Sydney Kingsford Smith

Fri 7/10

12:00 pm-9:10 pm

2 stops23h 10m

$1,557

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 6/27

7:23 am-6:50 am

2 stops33h 27m

Sydney Kingsford Smith

Fri 7/10

9:15 am-10:55 pm

2 stops27h 40m

$1,561

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 6/27

10:05 am-7:20 am

3 stops31h 15m

Sydney Kingsford Smith

Fri 7/10

9:20 am-9:34 pm

2 stops26h 14m

$1,640

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 6/12

5:35 pm-6:25 am

1 stop22h 50m

Sydney Kingsford Smith

Sat 6/27

3:15 pm-7:00 am

2 stops29h 45m

$1,707

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 6/15

3:29 pm-7:05 am

1 stop25h 36m

Sydney Kingsford Smith

Sat 6/27

3:45 pm-7:00 am

2 stops29h 15m

$1,709

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 4/18

6:00 am-4:50 pm

2 stops44h 50m

Sydney Kingsford Smith

Sat 4/25

3:40 pm-8:47 pm

2 stops43h 07m

$1,713

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 6/15

10:40 am-6:50 am

2 stops30h 10m

Sydney Kingsford Smith

Fri 6/26

9:15 am-6:08 am

2 stops34h 53m

$1,781

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Philadelphia to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Sydney in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Philadelphia with our price prediction graph.
Estimated round-trip 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 Philadelphia to Sydney

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

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Sydney. Price data was last updated on April 2, 2026.

To ensure you get the cheapest price possible for a flight from Philadelphia to Sydney, you should look to book at least 64 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 Philadelphia to Sydney?

Currently, August is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $372). Flying from Philadelphia to Sydney in January is currently the most expensive (average of $974). 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 to fly round-trip from Philadelphia to Sydney?

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 April 4, 2026.
Peruse reviews from past customers who have flown with Fiji Airways,Air New Zealand, andQantas Airways from Philadelphia to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.1

Entertainment

7.5

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Overall

8.1

Entertainment

7.5

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Overall

8.1

Entertainment

7.5

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Overall

8.1

Entertainment

7.5

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Overall

8.1

Entertainment

7.5

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Overall

8.1

Entertainment

7.5

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from Philadelphia to Sydney?

    Departing from Philadelphia to Sydney will take you 23h 25m. There are 9862 mi between Philadelphia and Sydney. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, United Airlines ($843), Qantas Airways ($1,044), and Air Canada ($1,052) offers the cheapest pricing from Philadelphia to Sydney. United Airlines is priced at 42% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to Sydney one-way?

    The cheapest airline one-way is Qantas Airways, with whom users have recently found tickets for as low as $628. However, be on the lookout for offers from Fiji Airways and American Airlines, as they are both options that can get you from Philadelphia to Sydney for a low price.

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

    Yes. In addition to deals on Philadelphia to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Sydney?

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

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

    Yes. Cheapflights offers flight deals from Philadelphia 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 Philadelphia to Sydney?

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $372). Flying from Philadelphia to Sydney in January is currently the most expensive (average of $974). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Coogee
Manly

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Philadelphia to Sydney

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

Top 6 airlines flying from Philadelphia to Sydney

Discover the top 6 airlines that operate flights from Philadelphia 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 2,558,603 searches. Data last updated April 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$843Average$1,468FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,044Average$1,602FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$1,052Average$1,398FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,198Average$1,575FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$1,272Average$1,517FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,418Average$1,548FlexibilityNo cancel feeOn-time78%

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