HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sydney

$544+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Jun 2 — Jun 91
Mon 6/2
Mon 6/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Sydney with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Philadelphia to Sydney Kingsford Smith are usually found in September or February, booked 27 days in advance, depart on a Sunday or Wednesday and return on a Monday

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 May 28, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,078
(Cheapflightsfares)

One-way from

$544
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$1,479
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. 14% potential increase in price ($258 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 May 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 5/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/253:35 pmPHL - SYD
2 stops32h 20mQantas Airways
Sun 11/25:25 amSYD - PHL
2 stops32h 31mQantas Airways
Deal found 5/27$1,078
This oojo deal was found by Cheapflights users on 5/26. 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.
Tue 10/286:35 pmPHL - SYD
2 stops27h 10mFiji Airways
Tue 11/112:10 pmSYD - PHL
2 stops23h 03mFiji Airways
Deal found 5/26$1,110
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/107:45 amPHL - SYD
2 stops38h 00mMultiple Airlines
Tue 6/175:45 pmSYD - PHL
1 stop27h 15mMultiple Airlines
Deal found 5/27$1,182
This StudentUniverse deal was found by Cheapflights users on 5/27. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/312:58 pmPHL - SYD
2 stops29h 47mAir New Zealand
Tue 7/1511:50 amSYD - PHL
2 stops31h 36mAir New Zealand
Deal found 5/27$1,365
This Air Canada deal was found by Cheapflights users on 5/26. 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.
Tue 10/283:30 pmPHL - SYD
2 stops26h 05mAir Canada
Tue 11/1111:20 amSYD - PHL
3 stops43h 30mAir Canada
Deal found 5/26$1,377
This Fareboom deal was found by Cheapflights users on 5/26. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:48 pmPHL - SYD
3 stops31h 52mAir Tahiti Nui
Tue 11/118:55 amSYD - PHL
3 stops30h 43mAir Tahiti Nui
Deal found 5/26$1,474
This KAYAK deal was found by Cheapflights users on 5/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/258:15 amPHL - SYD
2 stops45h 00mANA
Mon 12/112:25 pmSYD - PHL
2 stops41h 26mANA
Deal found 5/27$1,737
This FlightHub deal was found by Cheapflights users on 5/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/97:50 pmPHL - SYD
1 stop31h 00mQatar Airways
Fri 11/219:40 pmSYD - PHL
1 stop51h 20mQatar Airways
Deal found 5/27$1,742
This American Airlines deal was found by Cheapflights users on 5/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:20 amPHL - SYD
2 stops32h 40mAmerican Airlines
Wed 11/1911:15 amSYD - PHL
1 stop28h 23mAmerican Airlines
Deal found 5/27$1,790
This United Airlines deal was found by Cheapflights users on 5/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:00 pmPHL - SYD
2 stops28h 05mUnited Airlines
Wed 1/711:20 amSYD - PHL
2 stops27h 21mUnited Airlines
Deal found 5/27$1,814

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 May 28, 2025.
Use the filters below to find and compare flights from Philadelphia to Sydney that are best for you.

Fly from

Philadelphia

Fly to

Sydney

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 10/25

3:35 pm-2:55 pm

2 stops32h 20m

Sydney Kingsford Smith

Sun 11/2

5:25 am-10:56 pm

2 stops32h 31m

$1,078

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 10/28

6:35 pm-12:45 pm

2 stops27h 10m

Sydney Kingsford Smith

Tue 11/11

2:10 pm-9:13 pm

2 stops23h 03m

$1,110

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 6/10

7:45 am-11:45 am

2 stops38h 00m

Sydney Kingsford Smith

Tue 6/17

5:45 pm-7:00 am

1 stop27h 15m

$1,182

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 7/3

12:58 pm-8:45 am

2 stops29h 47m

Sydney Kingsford Smith

Tue 7/15

11:50 am-5:26 am

2 stops31h 36m

$1,365

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 10/28

3:30 pm-8:35 am

2 stops26h 05m

Sydney Kingsford Smith

Tue 11/11

11:20 am-2:50 pm

3 stops43h 30m

$1,377

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 10/28

6:48 pm-5:40 pm

3 stops31h 52m

Sydney Kingsford Smith

Tue 11/11

8:55 am-11:38 pm

3 stops30h 43m

$1,474

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 7/25

8:15 am-7:15 pm

2 stops45h 00m

Sydney Kingsford Smith

Mon 12/1

12:25 pm-1:51 pm

2 stops41h 26m

$1,737

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 11/9

7:50 pm-6:50 pm

1 stop31h 00m

Sydney Kingsford Smith

Fri 11/21

9:40 pm-9:00 am

1 stop51h 20m

$1,742

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 11/12

8:20 am-9:00 am

2 stops32h 40m

Sydney Kingsford Smith

Wed 11/19

11:15 am-11:38 pm

1 stop28h 23m

$1,790

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 7/25

12:58 pm-6:55 am

2 stops27h 57m

Sydney Kingsford Smith

Sun 11/30

11:50 am-4:56 pm

1 stop21h 06m

$2,159

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

Showing 1-10 of 14 results
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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Philadelphia-Sydney flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 May 23, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Sydney, you should look to book at least 27 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 $1,039). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $1,641). 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 PHL to SYD?

Find hourly flight availability from Philadelphia 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 May 28, 2025.

It’s typically best to fly out from Philadelphia to Sydney in the morning. Doing so could potentially save you 30% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Philadelphia to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to Sydney flight should consider departing on Sunday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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 May 28, 2025.
Read through reviews of airlines operating flights from Philadelphia to Sydney, such as Air Tahiti Nui, ANA and Fiji Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very good
64 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
ANA
8.3
Very good
878 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Fiji Airways
8.1
Very good
192 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air New Zealand
8.0
Very good
479 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Qantas Airways
7.5
Good
845 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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.

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

    According to our current data, Qantas Airways ($1,078), Fiji Airways ($1,110), and Air New Zealand ($1,365) offers the cheapest pricing from Philadelphia to Sydney. Qantas Airways is priced at 26% 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 Fiji Airways, with whom users have recently found tickets for as low as $624. However, be on the lookout for offers from Qantas Airways and Qatar Airways, 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, February is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,039). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $1,641). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wollongong
Parramatta
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.

Top 7 airlines flying from Philadelphia to Sydney

Discover the top 7 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 May 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$834Average$952FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$860Average$1,022FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$945Average$1,229FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,220Average$1,690FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,289Average$1,773FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,294Average$1,966FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$1,431Average$1,630FlexibilityNo cancel feeOn-time74%

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.