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$480+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Feb 9 — Feb 161
Sun 2/9
Sun 2/16
1 adult, Economy
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The best prices from Philadelphia to Sydney Kingsford Smith are usually found in February or March, booked 9 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 February 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$879
(United)

One-way from

$480
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,123
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
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From Philadelphia to Sydney Kingsford Smith
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One-way flight from Philadelphia to Sydney Kingsford Smith
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Highest demand for flights based on searches. 12% potential increase in price ($218 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 4, 2025.

This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/66:20 pmPHL - SYD
1 stop22h 55mUnited Airlines
Wed 2/1911:50 amSYD - PHL
1 stop20h 43mUnited Airlines
Deal found 2/3$865
This Trip.com deal was found by Cheapflights users on 2/4. 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 5/14:10 pmPHL - SYD
2 stops30h 05mMultiple Airlines
Thu 5/86:15 amSYD - PHL
2 stops32h 23mMultiple Airlines
Deal found 2/4$943
This Air Canada deal was found by Cheapflights users on 2/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/253:30 pmPHL - SYD
2 stops26h 05mAir Canada
Tue 3/1110:30 amSYD - PHL
3 stops43h 20mAir Canada
Deal found 2/3$1,103
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:35 pmPHL - SYD
1 stop23h 30mQantas Airways
Tue 9/29:10 amSYD - PHL
1 stop22h 10mQantas Airways
Deal found 2/3$1,293
This American Airlines deal was found by Cheapflights users on 2/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/306:05 pmPHL - SYD
1 stop23h 00mAmerican Airlines
Sun 5/185:35 pmSYD - PHL
1 stop29h 25mAmerican Airlines
Deal found 2/3$1,351
This Kissandfly.com deal was found by Cheapflights users on 2/3. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/176:05 pmPHL - SYD
1 stop22h 50mLufthansa
Fri 7/1810:20 amSYD - PHL
1 stop33h 37mLufthansa
Deal found 2/3$1,360
This FlightHub deal was found by Cheapflights users on 2/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/141:51 pmPHL - SYD
2 stops31h 39mFiji Airways
Sun 3/232:00 pmSYD - PHL
2 stops24h 38mFiji Airways
Deal found 2/2$1,806
This KAYAK deal was found by Cheapflights users on 2/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/226:20 amPHL - SYD
2 stops38h 15mAir New Zealand
Sat 6/286:20 pmSYD - PHL
2 stops55h 50mAir New Zealand
Deal found 2/3$1,816
This Ovago deal was found by Cheapflights users on 2/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/16:49 pmPHL - SYD
3 stops30h 16mAir Tahiti Nui
Sun 8/319:10 amSYD - PHL
3 stops27h 49mAir Tahiti Nui
Deal found 2/3$2,460
This Gurufare deal was found by Cheapflights users on 2/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/178:45 pmPHL - SYD
1 stop31h 05mQatar Airways
Sun 3/239:40 pmSYD - PHL
1 stop33h 50mQatar Airways
Deal found 2/2$2,612

Find flights from Philadelphia to Sydney within your budget

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 February 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 4/30

8:30 am-6:55 am

1 stop32h 25m

Sydney Kingsford Smith

Fri 5/16

10:20 am-12:44 am

3 stops28h 24m

$879

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 5/1

4:10 pm-12:15 pm

2 stops30h 05m

Sydney Kingsford Smith

Thu 5/8

6:15 am-12:38 am

2 stops32h 23m

$943

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 2/25

3:30 pm-9:35 am

2 stops26h 05m

Sydney Kingsford Smith

Tue 3/11

10:30 am-2:50 pm

3 stops43h 20m

$1,103

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 4/1

1:56 pm-8:05 am

1 stop27h 09m

Sydney Kingsford Smith

Tue 4/15

9:10 am-5:50 pm

1 stop22h 40m

$1,293

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 4/30

6:05 pm-7:05 am

1 stop23h 00m

Sydney Kingsford Smith

Sun 5/18

5:35 pm-9:00 am

1 stop29h 25m

$1,351

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 6/17

6:05 pm-6:55 am

1 stop22h 50m

Sydney Kingsford Smith

Fri 7/18

10:20 am-5:57 am

1 stop33h 37m

$1,360

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 3/14

1:51 pm-12:30 pm

2 stops31h 39m

Sydney Kingsford Smith

Sun 3/23

2:00 pm-11:38 pm

2 stops24h 38m

$1,806

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 6/22

6:20 am-10:35 am

2 stops38h 15m

Sydney Kingsford Smith

Sat 6/28

6:20 pm-12:10 pm

2 stops55h 50m

$1,816

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 8/1

6:49 pm-3:05 pm

3 stops30h 16m

Sydney Kingsford Smith

Sun 8/31

9:10 am-10:59 pm

3 stops27h 49m

$2,460

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 3/17

8:45 pm-6:50 pm

1 stop31h 05m

Sydney Kingsford Smith

Sun 3/23

9:40 pm-4:30 pm

1 stop33h 50m

$2,612

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 17 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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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.

Travel insights for flights from Philadelphia to Sydney

Get recent, data-driven insights about flights from Philadelphia to Sydney including ideal travel times, pricing trends, and more.

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 January 31, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Sydney, you should look to book at least 8 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 $1,046). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $1,643). 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 February 4, 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 February 4, 2025.
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Entertainment

7.2

Boarding

8.7

Crew

9.1

Food

7.8

Overall

8.7

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
61 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Entertainment

7.2

Boarding

8.7

Crew

9.1

Food

7.8

Overall

8.7

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
8.0
Very good
185 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Entertainment

7.2

Boarding

8.7

Crew

9.1

Food

7.8

Overall

8.7

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
7.9
Good
471 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Entertainment

7.2

Boarding

8.7

Crew

9.1

Food

7.8

Overall

8.7

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.

Qatar Airways
7.5
Good
3,710 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Entertainment

7.2

Boarding

8.7

Crew

9.1

Food

7.8

Overall

8.7

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
821 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Entertainment

7.2

Boarding

8.7

Crew

9.1

Food

7.8

Overall

8.7

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, United Airlines ($879), Air Canada ($1,103), and Qantas Airways ($1,293) 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 Fiji Airways, with whom users have recently found tickets for as low as $976. However, be on the lookout for offers from Air New Zealand and Qantas 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 $1,046). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $1,643). 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

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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 February 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$834Average$984FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$868Average$1,506FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$1,022Average$1,461FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,288Average$1,802FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,359Average$1,977FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,370Average$1,646FlexibilityNo cancel feeOn-time78%
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