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$535+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
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 enero 27, 2026.

This oojo deal was found by Cheapflights users on 1/25. 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.
lun. 1/262:30 pm
PHL
-
SYD
1 stop26h 30m
Qantas Airways
dom. 2/17:15 pm
SYD
-
PHL
2 stops35h 18m
Qantas Airways
Deal found 1/25$964
This BestPriceTravel deal was found by Cheapflights users on 1/27. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/308:36 am
PHL
-
SYD
1 stop29h 34m
Qantas Airways
vie. 2/67:05 am
SYD
-
PHL
2 stops29h 11m
Qantas Airways
Deal found 1/27$973
This oojo deal was found by Cheapflights users on 1/25. 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.
lun. 3/22:16 pm
PHL
-
SYD
2 stops38h 34m
Qantas Airways
lun. 3/1611:20 am
SYD
-
PHL
1 stop23h 22m
Qantas Airways
Deal found 1/25$975
This oojo deal was found by Cheapflights users on 1/26. 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.
lun. 3/22:16 pm
PHL
-
SYD
2 stops38h 34m
Qantas Airways
dom. 3/89:25 pm
SYD
-
PHL
1 stop25h 43m
Qantas Airways
Deal found 1/26$982
This oojo deal was found by Cheapflights users on 1/26. 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.
dom. 2/15:39 pm
PHL
-
SYD
2 stops32h 01m
Qantas Airways
mar. 2/1011:20 am
SYD
-
PHL
1 stop28h 28m
Qantas Airways
Deal found 1/26$1,010
This FlightHub deal was found by Cheapflights users on 1/25. 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.
mar. 3/103:54 pm
PHL
-
SYD
2 stops37h 56m
Qantas Airways
sáb. 3/2111:20 am
SYD
-
PHL
1 stop23h 22m
Qantas Airways
Deal found 1/25$1,033
This FlightHub deal was found by Cheapflights users on 1/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/308:36 am
PHL
-
SYD
1 stop29h 34m
Qantas Airways
sáb. 2/147:15 pm
SYD
-
PHL
2 stops44h 35m
Qantas Airways
Deal found 1/26$1,042
This FlightHub deal was found by Cheapflights users on 1/24. 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.
lun. 2/232:16 pm
PHL
-
SYD
1 stop26h 44m
Qantas Airways
lun. 3/211:20 am
SYD
-
PHL
1 stop24h 28m
Qantas Airways
Deal found 1/24$1,047
This FlightHub deal was found by Cheapflights users on 1/25. 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.
lun. 2/162:16 pm
PHL
-
SYD
1 stop26h 44m
Qantas Airways
mar. 2/245:45 pm
SYD
-
PHL
1 stop22h 05m
Qantas Airways
Deal found 1/25$1,048

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 enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$975
(oojo)

One-way from

$535
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,680
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 ($169 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 enero 27, 2026.
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

lun. 3/2

2:16 pm-8:50 pm

2 stops38h 34m

Sydney Kingsford Smith

lun. 3/16

11:20 am-7:42 pm

1 stop23h 22m

$975

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

mié. 2/25

2:16 pm-9:00 am

1 stop26h 44m

Sydney Kingsford Smith

mié. 3/4

11:20 am-7:48 pm

1 stop24h 28m

$1,047

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 2/23

2:16 pm-9:00 am

1 stop26h 44m

Sydney Kingsford Smith

mar. 3/3

2:05 pm-8:49 pm

1 stop22h 44m

$1,048

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 2/23

5:20 pm-9:00 am

2 stops23h 40m

Sydney Kingsford Smith

mar. 3/3

11:20 am-7:40 pm

2 stops24h 20m

$1,054

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

mar. 2/24

3:55 pm-9:00 am

2 stops25h 05m

Sydney Kingsford Smith

mar. 3/3

11:20 am-7:48 pm

1 stop24h 28m

$1,054

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 2/16

3:37 pm-9:00 am

2 stops25h 23m

Sydney Kingsford Smith

mar. 2/24

11:20 am-5:44 pm

2 stops22h 24m

$1,054

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 2/23

9:24 am-9:00 am

1 stop31h 36m

Sydney Kingsford Smith

lun. 3/2

11:20 am-5:44 pm

2 stops22h 24m

$1,054

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 2/16

8:00 am-8:30 am

2 stops32h 30m

Sydney Kingsford Smith

mar. 2/24

10:40 am-11:46 pm

2 stops29h 06m

$1,071

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 3/2

8:00 am-8:30 am

2 stops32h 30m

Sydney Kingsford Smith

lun. 3/16

1:15 pm-11:00 pm

2 stops24h 45m

$1,071

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 2/9

5:30 am-12:35 pm

3 stops39h 05m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

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 January.
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 January 23, 2026.

To ensure you get the cheapest price possible for a flight from Philadelphia to Sydney, you should look to book at least 47 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 $431). Flying from Philadelphia to Sydney in January is currently the most expensive (average of $954). 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 enero 27, 2026.
Peruse reviews from past customers who have flown with Fiji Airways, Qantas Airways, and United 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
222 reviews

Crew

8.5

Comfort

8.0

Food

7.4

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.0
Very good
222 reviews
Fiji Airways
8.0
Very good
222 reviews

Crew

8.5

Comfort

8.0

Food

7.4

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Qantas Airways
7.5
Good
978 reviews
Fiji Airways
8.0
Very good
222 reviews

Crew

8.5

Comfort

8.0

Food

7.4

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
United Airlines
7.4
Good
9,205 reviews
Fiji Airways
8.0
Very good
222 reviews

Crew

8.5

Comfort

8.0

Food

7.4

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
American Airlines
7.2
Good
11,197 reviews
Fiji Airways
8.0
Very good
222 reviews

Crew

8.5

Comfort

8.0

Food

7.4

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Air Canada
7.1
Good
10,660 reviews
Fiji Airways
8.0
Very good
222 reviews

Crew

8.5

Comfort

8.0

Food

7.4

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

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 38h 34m. 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, Delta ($535), United Airlines ($859), and Air Canada ($941) offers the cheapest pricing from Philadelphia to Sydney. Delta is priced at 62% 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 $431). Flying from Philadelphia to Sydney in January is currently the most expensive (average of $954). 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
Manly

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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 enero 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$535Average$879FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$859Average$884FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$941Average$1,220FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$1,044Average$1,881FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,220Average$1,548FlexibilityNo cancel feeOn-time78%
Fiji AirwaysCheapest$1,288Average$1,531FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,350Average$1,657FlexibilityNo cancel feeOn-time71%

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