Australia

$473+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Apr 14 — Apr 211
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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 March 15, 2026.

This Delta deal was found by Cheapflights users on 3/12. 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.
Sun 4/2612:29 pm
PHL
-
SYD
2 stops28h 21m
Delta
Tue 5/129:15 am
SYD
-
PHL
2 stops25h 34m
Delta
Deal found 3/12$904
This Delta deal was found by Cheapflights users on 3/13. 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.
Sat 8/111:45 am
PHL
-
SYD
2 stops29h 05m
Delta
Wed 8/129:15 am
SYD
-
PHL
2 stops27h 05m
Delta
Deal found 3/13$955
This Delta deal was found by Cheapflights users on 3/12. 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.
Sat 8/11:00 pm
PHL
-
SYD
2 stops27h 50m
Delta
Sat 8/159:15 am
SYD
-
PHL
2 stops25h 18m
Delta
Deal found 3/12$1,004
This Jetabroad deal was found by Cheapflights users on 3/11. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:32 pm
PHL
-
MEL
2 stops34h 48m
Multiple Airlines
Sat 5/27:30 am
MEL
-
PHL
2 stops29h 17m
Multiple Airlines
Deal found 3/11$1,107
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 6/104:05 pm
PHL
-
SYD
2 stops24h 45m
Delta
Wed 8/199:15 am
SYD
-
PHL
2 stops25h 18m
Delta
Deal found 3/12$1,109
This Delta deal was found by Cheapflights users on 3/13. 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.
Sun 5/175:45 am
PHL
-
SYD
2 stops35h 05m
Delta
Tue 7/79:15 am
SYD
-
PHL
2 stops24h 07m
Delta
Deal found 3/13$1,110
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 Delta deal was found by Cheapflights users on 3/13. 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.
Sat 5/167:00 pm
PHL
-
SYD
2 stops45h 50m
Delta
Tue 7/79:15 am
SYD
-
PHL
2 stops25h 16m
Delta
Deal found 3/13$1,124
This Jetabroad deal was found by Cheapflights users on 3/12. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:32 pm
PHL
-
MEL
2 stops34h 48m
Multiple Airlines
Sat 5/27:30 am
MEL
-
PHL
2 stops29h 17m
Multiple Airlines
Deal found 3/12$1,136
This Qantas Airways deal was found by Cheapflights users on 3/15. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/61:57 pm
PHL
-
BNE
1 stop24h 53m
Multiple Airlines
Sun 11/151:10 pm
BNE
-
PHL
1 stop25h 36m
Multiple Airlines
Deal found 3/15$1,143
This Delta deal was found by Cheapflights users on 3/13. 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.
Sat 5/167:00 pm
PHL
-
SYD
2 stops69h 50m
Delta
Mon 7/69:15 am
SYD
-
PHL
2 stops52h 25m
Delta
Deal found 3/13$1,143
This American Airlines deal was found by Cheapflights users on 3/15. 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.
Fri 11/62:09 pm
PHL
-
BNE
2 stops24h 41m
American Airlines
Sun 11/151:10 pm
BNE
-
PHL
2 stops21h 44m
American Airlines
Deal found 3/15$1,148

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 March 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$904
(Delta)

One-way from

$473
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,518
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
From Philadelphia to Australia
One-way flight from Philadelphia to Australia
Highest demand for flights based on searches. 9% potential increase in price ($164 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($36 potential savings vs. average RT price).
Average for round-trip flights in March 2026

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 March 15, 2026.
Use the filters below to find and compare flights from Philadelphia to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Sat 4/25

6:32 pm-7:20 pm

2 stops34h 48m

Melbourne

Sat 5/2

7:30 am-10:47 pm

2 stops29h 17m

$1,107

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Sat 4/18

6:32 pm-7:20 pm

2 stops34h 48m

Melbourne

Sat 5/2

7:30 am-10:47 pm

2 stops29h 17m

$1,136

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 8/9

4:05 pm-6:50 am

2 stops24h 45m

Sydney Kingsford Smith

Sat 8/22

9:15 am-6:05 am

2 stops34h 50m

$1,159

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sun 4/26

3:43 pm-5:00 am

1 stop23h 17m

Brisbane

Sun 5/3

8:35 pm-5:52 am

1 stop23h 17m

$1,243

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sun 4/26

11:15 am-5:00 am

1 stop27h 45m

Brisbane

Sun 5/3

8:35 pm-5:52 am

1 stop23h 17m

$1,243
Quickest round-trip

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sat 8/8

5:43 pm-5:00 am

1 stop21h 17m

Brisbane

Wed 8/26

8:35 pm-7:05 am

1 stop24h 30m

$1,292

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Thu 5/14

3:42 pm-5:00 am

1 stop23h 18m

Brisbane

Sun 5/24

8:35 pm-7:00 am

1 stop24h 25m

$1,292

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 5/26

7:25 am-6:50 am

2 stops33h 25m

Sydney Kingsford Smith

Wed 8/19

9:15 am-6:29 pm

2 stops23h 14m

$1,314

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Sat 4/25

3:21 pm-5:00 am

1 stop23h 39m

Melbourne

Sat 5/2

6:45 pm-5:52 am

2 stops49h 07m

$1,327

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 6/27

4:05 pm-6:50 am

2 stops24h 45m

Sydney Kingsford Smith

Mon 7/27

9:15 am-6:05 am

2 stops34h 50m

$1,356

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 60 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $166). Flying from Philadelphia to Australia in January is currently the most expensive (average of $974). 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 March 15, 2026.
See what other customers who have flown with Fiji Airways,Qantas Airways, andUnited 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.

Entertainment

7.5

Comfort

8.1

Food

7.5

Crew

8.5

Boarding

8.2

Overall

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 👍👍

Entertainment

7.5

Comfort

8.1

Food

7.5

Crew

8.5

Boarding

8.2

Overall

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 👍👍

Entertainment

7.5

Comfort

8.1

Food

7.5

Crew

8.5

Boarding

8.2

Overall

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 👍👍

Entertainment

7.5

Comfort

8.1

Food

7.5

Crew

8.5

Boarding

8.2

Overall

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 👍👍

Entertainment

7.5

Comfort

8.1

Food

7.5

Crew

8.5

Boarding

8.2

Overall

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 👍👍

Entertainment

7.5

Comfort

8.1

Food

7.5

Crew

8.5

Boarding

8.2

Overall

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 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?

    Delta, Qantas Airways, and American Airlines can get you from Philadelphia to Australia in just under 21h 17m. Your travel time can differ by up to 6h 57m. The distance between Philadelphia and Australia is about 9555 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 Qantas Airways. According to our data, you can fly for as low as $628. Users have also found prices from $668 and $772 on Fiji Airways and American Airlines, respectively.

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

  • 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, September is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $166). Flying from Philadelphia to Australia in January is currently the most expensive (average of $974). 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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Top 7 airlines flying from Philadelphia to Australia

Discover the top 7 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 March 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$539Average$1,657FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$941Average$1,384FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$945Average$1,796FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$954Average$1,521FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,159Average$1,621FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$1,418Average$1,548FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,443Average$1,698FlexibilityNo cancel feeOn-time68%

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