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$566+ Cheap flights from Philadelphia (PHL) to Australia

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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Philadelphia to Australia

Cheapest flights from Philadelphia to Australia
Explore the most affordable flight options available from Philadelphia to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This FlightHub deal was found by Cheapflights users on 1/19. 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 3/87:00 pm
PHL
-
SYD
1 stop23h 00m
Qantas Airways
Mon 3/1611:20 am
SYD
-
PHL
1 stop23h 22m
Qantas Airways
Deal found 1/19$1,045
This FlightHub deal was found by Cheapflights users on 1/19. 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.
Mon 2/162:16 pm
PHL
-
SYD
1 stop26h 44m
Qantas Airways
Tue 2/249:25 pm
SYD
-
PHL
1 stop26h 43m
Qantas Airways
Deal found 1/19$1,046
This American Airlines deal was found by Cheapflights users on 1/19. 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.
Mon 2/235:20 pm
PHL
-
SYD
2 stops23h 40m
American Airlines
Tue 3/311:20 am
SYD
-
PHL
1 stop24h 28m
American Airlines
Deal found 1/19$1,052
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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.
Mon 3/22:57 pm
PHL
-
SYD
1 stop23h 58m
Qantas Airways
Mon 3/1611:20 am
SYD
-
PHL
1 stop23h 22m
Qantas Airways
Deal found 1/21$1,056
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:10 am
PHL
-
SYD
2 stops34h 20m
Delta
Tue 2/242:15 pm
SYD
-
PHL
2 stops26h 09m
Delta
Deal found 1/20$1,069
This Delta deal was found by Cheapflights users on 1/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:55 am
PHL
-
SYD
2 stops33h 35m
Delta
Mon 2/232:15 pm
SYD
-
PHL
2 stops25h 31m
Delta
Deal found 1/19$1,070
This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Sat 3/73:59 pm
PHL
-
SYD
1 stop22h 56m
Qantas Airways
Sun 3/1511:20 am
SYD
-
PHL
1 stop23h 22m
Qantas Airways
Deal found 1/20$1,111
This FlightHub deal was found by Cheapflights users on 1/19. 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.
Tue 3/247:00 pm
PHL
-
SYD
1 stop23h 00m
Qantas Airways
Fri 4/109:10 am
SYD
-
PHL
1 stop23h 44m
Qantas Airways
Deal found 1/19$1,120
This FlightHub deal was found by Cheapflights users on 1/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/162:16 pm
PHL
-
SYD
1 stop26h 44m
Qantas Airways
Sat 2/282:05 pm
SYD
-
PHL
1 stop23h 39m
Qantas Airways
Deal found 1/18$1,121
This FlightHub deal was found by Cheapflights users on 1/19. 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 3/132:18 pm
PHL
-
SYD
1 stop26h 07m
Qantas Airways
Sun 3/229:25 pm
SYD
-
PHL
1 stop25h 43m
Qantas Airways
Deal found 1/19$1,122
This American Airlines deal was found by Cheapflights users on 1/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/23:45 pm
PHL
-
SYD
2 stops25h 15m
American Airlines
Sat 2/1411:20 am
SYD
-
PHL
1 stop24h 28m
American Airlines
Deal found 1/18$1,127
This Air Canada deal was found by Cheapflights users on 1/21. 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 3/247:50 am
PHL
-
SYD
2 stops33h 45m
Air Canada
Fri 4/109:20 am
SYD
-
PHL
2 stops27h 23m
Air Canada
Deal found 1/21$1,134

Find flight deals from Philadelphia to Australia

Keep the following information in mind while searching for Philadelphia to Australia flight deals. Data was last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,045
(FlightHub)

One-way from

$566
(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 Australia
Search Deals
One-way flight from Philadelphia to Australia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($177 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($43 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 Australia 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 January 21, 2026.
Use the filters below to find and compare flights from Philadelphia to Australia that are best for you.

Fly from

Philadelphia

Fly to

Australia

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 2/3

2:30 pm-9:00 am

1 stop26h 30m

Sydney Kingsford Smith

Sun 2/15

11:20 am-7:48 pm

1 stop24h 28m

$1,045

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/16

2:16 pm-9:00 am

1 stop26h 44m

Sydney Kingsford Smith

Mon 2/23

2:05 pm-9:44 pm

1 stop23h 39m

$1,046

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 2/4

2:30 pm-9:00 am

1 stop26h 30m

Sydney Kingsford Smith

Wed 2/11

11:20 am-8:01 pm

2 stops24h 41m

$1,052

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 2/3

3:35 pm-9:00 am

2 stops25h 25m

Sydney Kingsford Smith

Sun 2/15

11:20 am-5:47 pm

2 stops22h 27m

$1,052

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/23

3:37 pm-9:00 am

2 stops25h 23m

Sydney Kingsford Smith

Tue 3/3

11:20 am-7:40 pm

2 stops24h 20m

$1,052

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/16

6:10 am-8:30 am

2 stops34h 20m

Sydney Kingsford Smith

Tue 2/24

2:15 pm-12:24 am

2 stops26h 09m

$1,069

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/1

6:10 am-6:50 am

2 stops32h 40m

Sydney Kingsford Smith

Tue 3/24

9:40 am-6:29 pm

2 stops23h 49m

$1,069

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/8

12:59 pm-7:25 am

2 stops27h 26m

Sydney Kingsford Smith

Mon 3/16

9:40 am-6:29 pm

2 stops23h 49m

$1,070

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 3/2

6:10 am-8:30 am

2 stops34h 20m

Sydney Kingsford Smith

Mon 3/16

9:40 am-6:29 pm

2 stops23h 49m

$1,070

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Sat 2/7

5:39 pm-6:45 pm

2 stops33h 06m

Melbourne

Sat 2/21

7:00 am-9:44 pm

2 stops30h 44m

$1,170

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 54 results
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Best time to book a flight from Philadelphia to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

What is the cheapest month to book a flight from Philadelphia to Australia?

Currently, February is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $138). Flying from Philadelphia to Australia 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 Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated January 21, 2026.
See what other customers who have flown with Fiji Airways, Qantas Airways, and United Airlines from Philadelphia to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.0
Very good
219 reviews

Food

7.4

Crew

8.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.4

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
219 reviews
Fiji Airways
8.0
Very good
219 reviews

Food

7.4

Crew

8.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.4

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
973 reviews
Fiji Airways
8.0
Very good
219 reviews

Food

7.4

Crew

8.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.4

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
9,191 reviews
Fiji Airways
8.0
Very good
219 reviews

Food

7.4

Crew

8.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.4

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
11,174 reviews
Fiji Airways
8.0
Very good
219 reviews

Food

7.4

Crew

8.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.4

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
10,646 reviews
Fiji Airways
8.0
Very good
219 reviews

Food

7.4

Crew

8.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.4

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 Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Philadelphia to Australia?

    Most people fly from Philadelphia (PHL) if they book a flight from Philadelphia to Australia. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • How long is the flight from Philadelphia to Australia?

    Qantas Airways, American Airlines, and Qatar Airways can get you from Philadelphia to Australia in just under 26h 30m. Your travel time can differ by up to 7h 35m. The distance between Philadelphia and Australia is about 9862 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Philadelphia to Australia one-way?

    For one-way options, check prices for Fiji Airways. According to our data, you can fly for as low as $623. Users have also found prices from $628 and $772 on Qantas Airways and American Airlines, respectively.

  • What are the most popular routes from Philadelphia to Australia?

    The most popular route from Philadelphia to Australia is Philadelphia - Sydney Kingsford Smith. You may also consider Philadelphia - Melbourne or Philadelphia - Melbourne Avalon.

  • Can I find deals for flights from Philadelphia to Australia that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Australia.

  • Can I find deals for business class flights from Philadelphia to Australia?

    Yes. Cheapflights offers flight deals from Philadelphia to Australia 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 Australia?

    Currently, February is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $138). Flying from Philadelphia to Australia 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Philadelphia to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Philadelphia to Australia

Discover the top 8 airlines that operate flights from Philadelphia to Australia. 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$535Average$881FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$539Average$1,503FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$765Average$1,355FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$945Average$1,489FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$1,044Average$1,837FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,220Average$1,548FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,296Average$1,608FlexibilityNo cancel feeOn-time68%
American AirlinesCheapest$1,350Average$1,618FlexibilityNo cancel feeOn-time71%

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