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$648+ Cheap flights from Philadelphia (PHL) to Sydney (SYD)

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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Aug 17 — Aug 241
Mon 8/17
Mon 8/24
1 adult, Economy
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Cheap 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 July 18, 2026.

This oojo deal was found by Cheapflights users on 7/18. 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 11/88:30 pm
PHL
-
SYD
1 stop42h 20m
Qatar Airways
Wed 11/183:50 pm
SYD
-
PHL
1 stop38h 50m
Qatar Airways
Deal found 7/18$1,219
This oojo deal was found by Cheapflights users on 7/18. 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 11/58:30 pm
PHL
-
SYD
1 stop42h 20m
Qatar Airways
Sun 11/153:50 pm
SYD
-
PHL
1 stop38h 50m
Qatar Airways
Deal found 7/18$1,258
This Qantas Airways deal was found by Cheapflights users on 7/15. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/213:41 pm
PHL
-
SYD
2 stops26h 39m
Qantas Airways
Wed 12/302:05 pm
SYD
-
PHL
1 stop21h 28m
Qantas Airways
Deal found 7/15$1,265
This oojo deal was found by Cheapflights users on 7/17. 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 11/84:05 pm
PHL
-
SYD
1 stop22h 20m
Qantas Airways
Wed 11/1811:05 am
SYD
-
PHL
2 stops24h 58m
Qantas Airways
Deal found 7/17$1,272
This Qantas Airways deal was found by Cheapflights users on 7/15. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:05 pm
PHL
-
SYD
1 stop22h 20m
Multiple Airlines
Wed 11/1810:25 am
SYD
-
PHL
2 stops25h 38m
Multiple Airlines
Deal found 7/15$1,274
This Air Canada deal was found by Cheapflights users on 7/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:05 am
PHL
-
SYD
2 stops31h 15m
Air Canada
Sun 9/279:20 am
SYD
-
PHL
2 stops43h 27m
Air Canada
Deal found 7/14$1,288
This Air Canada deal was found by Cheapflights users on 7/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:20 pm
PHL
-
SYD
2 stops26h 15m
Air Canada
Wed 11/1811:20 am
SYD
-
PHL
2 stops43h 24m
Air Canada
Deal found 7/14$1,289

Find 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 July 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,219
(oojo)

One-way from

$648
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,604
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
Search Deals
From Philadelphia to Sydney Kingsford Smith
Search Deals
One-way flight from Philadelphia to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($213 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 18, 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

Mon 9/14

9:30 pm-6:50 pm

2 stops31h 20m

Sydney Kingsford Smith

Sun 9/27

8:45 pm-2:30 pm

1 stop31h 45m

$1,305

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 10/17

9:30 pm-10:20 pm

2 stops33h 50m

Sydney Kingsford Smith

Sat 10/31

9:40 pm-3:40 pm

1 stop33h 00m

$1,345
Quickest round-trip

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 8/29

9:27 am-6:55 am

1 stop31h 28m

Sydney Kingsford Smith

Sat 9/5

10:20 am-5:30 pm

1 stop21h 10m

$1,556

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 12/10

9:30 am-9:20 am

1 stop31h 50m

Sydney Kingsford Smith

Wed 12/23

9:15 am-6:44 pm

1 stop25h 29m

$1,566

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 8/24

9:30 pm-9:55 pm

2 stops34h 25m

Sydney Kingsford Smith

Sun 8/30

8:45 pm-2:30 pm

1 stop31h 45m

$1,594

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 12/24

7:40 am-6:20 am

2 stops30h 40m

Sydney Kingsford Smith

Sun 1/10

9:15 am-9:24 am

2 stops40h 09m

$1,631

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 8/24

9:30 pm-5:10 pm

1 stop29h 40m

Sydney Kingsford Smith

Mon 8/31

7:00 pm-2:30 pm

2 stops33h 30m

$1,713
Cheapest one-way

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 11/17

9:14 am-8:15 pm

3 stops43h 01m

$648

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 8/5

8:24 pm-3:55 pm

3 stops53h 31m

$719

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 9/30

9:14 am-9:45 am

3 stops58h 31m

$742

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
BusinessClassPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*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?

To ensure you get the cheapest price possible for a flight from Philadelphia to Sydney, you should look to book at least 58 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, February is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,049). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $2,023). 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 July 18, 2026.
Peruse reviews from past customers who have flown with Fiji Airways,Qantas Airways, andUnited Airlines 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.
Fiji Airways
8.0
Very good
248 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Overall

8.0

Boarding

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.
Fiji Airways
8.0
Very good
248 reviews
Fiji Airways
8.0
Very good
248 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Overall

8.0

Boarding

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.
Qantas Airways
7.5
Good
1,062 reviews
Fiji Airways
8.0
Very good
248 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Overall

8.0

Boarding

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.
United Airlines
7.4
Good
10,008 reviews
Fiji Airways
8.0
Very good
248 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Overall

8.0

Boarding

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.
American Airlines
7.1
Good
11,822 reviews
Fiji Airways
8.0
Very good
248 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Overall

8.0

Boarding

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.
Air Canada
7.1
Good
11,359 reviews
Fiji Airways
8.0
Very good
248 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Overall

8.0

Boarding

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 31h 20m. 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 ($1,045), and Air Canada ($1,066) 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.

  • 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, February is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,049). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $2,023). 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

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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.
John F Kennedy Intl to Sydney flights
Newark to Sydney flights
Dulles Intl to Sydney flights
Reagan-National to Sydney flights
Pittsburgh to Sydney flights

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 July 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$843Average$1,457FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,045Average$1,494FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$1,066Average$1,398FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,159Average$1,563FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$1,244Average$1,486FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,418Average$1,548FlexibilityNo cancel feeOn-time78%

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