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$530+ 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This oojo deal was found by Cheapflights users on 3/7. 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
Sat 11/76:45 pm
SYD
-
PHL
2 stops35h 52m
Qantas Airways
Deal found 3/7$1,092
This oojo deal was found by Cheapflights users on 3/9. 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 11/310:46 am
PHL
-
SYD
1 stop28h 09m
Qantas Airways
Tue 11/1710:20 am
SYD
-
PHL
2 stops25h 43m
Qantas Airways
Deal found 3/9$1,097
This oojo deal was found by Cheapflights users on 3/10. 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 11/310:46 am
PHL
-
SYD
1 stop28h 09m
Qantas Airways
Tue 11/109:50 pm
SYD
-
PHL
2 stops32h 47m
Qantas Airways
Deal found 3/10$1,121
This oojo deal was found by Cheapflights users on 3/9. 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 11/13:55 pm
PHL
-
SYD
2 stops26h 25m
Qantas Airways
Sun 11/152:05 pm
SYD
-
PHL
1 stop22h 05m
Qantas Airways
Deal found 3/9$1,148
This FlightHub deal was found by Cheapflights users on 3/9. 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.
Thu 12/35:00 pm
PHL
-
SYD
2 stops25h 55m
Qantas Airways
Sun 12/132:05 pm
SYD
-
PHL
1 stop22h 03m
Qantas Airways
Deal found 3/9$1,152
This Bravofly deal was found by Cheapflights users on 3/7. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:37 pm
PHL
-
SYD
1 stop23h 28m
Qantas Airways
Tue 4/289:10 am
SYD
-
PHL
1 stop23h 44m
Qantas Airways
Deal found 3/7$1,221
This oojo deal was found by Cheapflights users on 3/9. 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.
Mon 9/145:43 pm
PHL
-
SYD
2 stops25h 37m
Qantas Airways
Sun 9/2712:00 pm
SYD
-
PHL
1 stop23h 00m
Qantas Airways
Deal found 3/9$1,230
This Gurufare deal was found by Cheapflights users on 3/6. 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.
Sun 11/16:10 am
PHL
-
SYD
2 stops46h 05m
ANA
Sun 11/812:25 pm
SYD
-
PHL
2 stops40h 00m
ANA
Deal found 3/6$1,243
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Tue 4/214:20 pm
PHL
-
SYD
2 stops24h 45m
American Airlines
Tue 4/2812:00 pm
SYD
-
PHL
1 stop22h 34m
American Airlines
Deal found 3/7$1,244
This oojo deal was found by Cheapflights users on 3/8. 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.
Mon 4/66:40 pm
PHL
-
SYD
1 stop22h 15m
Qantas Airways
Tue 5/125:30 pm
SYD
-
PHL
2 stops26h 22m
Qantas Airways
Deal found 3/8$1,247

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,221
(Bravofly)

One-way from

$530
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,513
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. 10% potential increase in price ($180 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 11, 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
Quickest round-trip

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 3/23

7:00 pm-9:00 am

1 stop23h 00m

Sydney Kingsford Smith

Fri 4/24

9:10 am-6:54 pm

1 stop23h 44m

$1,354

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 4/23

3:43 pm-7:05 am

1 stop25h 22m

Sydney Kingsford Smith

Thu 4/30

9:10 am-6:54 pm

1 stop23h 44m

$1,358

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 5/6

9:55 am-8:45 am

3 stops32h 50m

Sydney Kingsford Smith

Wed 5/20

11:55 am-9:39 am

3 stops35h 44m

$1,414

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 5/15

9:30 am-8:45 am

2 stops33h 15m

Sydney Kingsford Smith

Sun 5/24

11:55 am-9:39 am

3 stops35h 44m

$1,615

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/24

10:41 am-5:55 pm

2 stops40h 14m

Sydney Kingsford Smith

Fri 4/10

8:50 pm-6:55 pm

2 stops36h 05m

$1,639

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 3/27

10:40 am-6:35 am

2 stops52h 55m

Sydney Kingsford Smith

Sat 4/11

8:50 pm-10:38 pm

2 stops39h 48m

$1,707

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 5/10

10:05 am-7:20 am

3 stops31h 15m

Sydney Kingsford Smith

Sat 5/16

9:20 am-9:33 pm

2 stops26h 13m

$1,754

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/15

6:22 pm-7:45 pm

2 stops34h 23m

Sydney Kingsford Smith

Thu 4/16

8:45 pm-6:05 am

2 stops47h 20m

$1,796

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 3/21

6:47 pm-7:45 pm

2 stops57h 58m

Sydney Kingsford Smith

Thu 4/23

8:45 pm-6:02 am

2 stops47h 17m

$1,807

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 4/6

9:15 am-7:20 am

2 stops32h 05m

Sydney Kingsford Smith

Thu 4/9

9:20 am-2:46 pm

2 stops43h 26m

$1,900

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 20 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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 March 6, 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 September is currently the most expensive (average of $986). 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.

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 March 11, 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
8.1
Very good
231 reviews

Food

7.5

Boarding

8.1

Overall

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Fiji Airways
8.1
Very good
231 reviews
Fiji Airways
8.1
Very good
231 reviews

Food

7.5

Boarding

8.1

Overall

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Qantas Airways
7.5
Good
1,004 reviews
Fiji Airways
8.1
Very good
231 reviews

Food

7.5

Boarding

8.1

Overall

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
United Airlines
7.4
Good
9,415 reviews
Fiji Airways
8.1
Very good
231 reviews

Food

7.5

Boarding

8.1

Overall

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
American Airlines
7.1
Good
11,426 reviews
Fiji Airways
8.1
Very good
231 reviews

Food

7.5

Boarding

8.1

Overall

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Air Canada
7.1
Good
10,800 reviews
Fiji Airways
8.1
Very good
231 reviews

Food

7.5

Boarding

8.1

Overall

8.1

Entertainment

7.5

Crew

8.5

Comfort

8.1

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍

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. There are 9862 mi between Philadelphia and Sydney.

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

    According to our current data, United Airlines ($843), Air Canada ($941), and Qantas Airways ($1,044) offers the cheapest pricing from Philadelphia to Sydney. United Airlines is priced at 43% 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 September is currently the most expensive (average of $986). 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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$843Average$1,083FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$941Average$1,230FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$1,044Average$1,729FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,159Average$1,621FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$1,288Average$1,531FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,418Average$1,548FlexibilityNo cancel feeOn-time78%

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