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Cheap flights from Philadelphia to Australia from $883

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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
17 Jul — 24 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Philadelphia to Australia

Enter your travel dates to find the best prices.

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 17 June 2026.

Tue 1/908:30
PHL
-
BNE
3 stops35h 55m
Multiple Airlines
Fri 4/911:35
BNE
-
PHL
2 stops35h 41m
Multiple Airlines
Deal found 16/6$1,637
Mon 2/1120:30
PHL
-
MEL
1 stop29h 20m
Qatar Airways
Wed 11/1116:10
MEL
-
PHL
1 stop38h 30m
Qatar Airways
Deal found 17/6$1,729
Sun 9/810:50
PHL
-
SYD
2 stops30h 30m
Air Canada
Tue 25/809:20
SYD
-
PHL
2 stops44h 21m
Air Canada
Deal found 15/6$1,755
Tue 6/1021:30
PHL
-
MEL
1 stop41h 25m
Qatar Airways
Wed 21/1016:10
MEL
-
PHL
1 stop37h 55m
Qatar Airways
Deal found 14/6$1,757
Sun 8/1120:30
PHL
-
SYD
1 stop42h 20m
Qatar Airways
Wed 18/1115:50
SYD
-
PHL
1 stop38h 50m
Qatar Airways
Deal found 17/6$1,766
Wed 5/811:06
PHL
-
SYD
3 stops34h 44m
Multiple Airlines
Tue 18/813:15
SYD
-
PHL
3 stops31h 05m
Multiple Airlines
Deal found 12/6$1,769
Sun 2/810:05
PHL
-
BNE
2 stops31h 00m
Air Canada
Wed 12/810:00
BNE
-
PHL
2 stops42h 49m
Air Canada
Deal found 12/6$1,770
Sun 1/1113:00
PHL
-
BNE
1 stop26h 30m
Qantas Airways
Wed 2/1209:40
BNE
-
PHL
1 stop25h 28m
Qantas Airways
Deal found 16/6$1,774
Sun 1/1115:20
PHL
-
BNE
2 stops26h 25m
Air Canada
Wed 2/1210:45
BNE
-
PHL
2 stops42h 59m
Air Canada
Deal found 16/6$1,779
Sun 26/710:05
PHL
-
BNE
2 stops31h 00m
Air Canada
Mon 10/810:00
BNE
-
PHL
2 stops38h 09m
Air Canada
Deal found 14/6$1,780
Thu 24/921:30
PHL
-
SYD
1 stop29h 40m
Qatar Airways
Thu 1/1020:45
SYD
-
PHL
1 stop32h 20m
Qatar Airways
Deal found 16/6$1,781
Mon 27/715:25
PHL
-
BNE
2 stops25h 40m
Air Canada
Sun 16/810:00
BNE
-
PHL
2 stops38h 09m
Air Canada
Deal found 14/6$1,790

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 17 June 2026.

Round-trip from

$1,637

One-way from

$883

Popular in

December

Cheapest in

February

Average price

$2,210
1/9-4/9
  • 1/9-4/9
  • 5 total stops
  • 71h 36m total
  • Philadelphia to Australia
Search Deals
10/10
  • 10/10
  • 3 total stops
  • 49h 06m total
  • Philadelphia to Australia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($480 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($113 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 17 June 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 return flight

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 1/9

08:30-10:25

3 stops35h 55m

Brisbane

Fri 4/9

11:35-09:16

2 stops35h 41m

$1,637

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sun 2/8

10:05-07:05

2 stops31h 00m

Brisbane

Wed 12/8

10:00-21:34

2 stops25h 34m

$1,770

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 8/11

16:05-06:25

1 stop22h 20m

Sydney Kingsford Smith

Wed 18/11

10:20-20:03

2 stops25h 43m

$1,806

PhiladelphiaMelbourne

PHL - AVV

PHLAVV

Philadelphia

Mon 2/11

09:15-20:20

3 stops43h 05m

Melbourne Avalon

Wed 11/11

06:00-22:56

3 stops32h 56m

$1,821

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Fri 25/9

10:05-07:05

2 stops31h 00m

Brisbane

Sun 18/10

10:00-14:47

2 stops42h 47m

$1,822

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Mon 3/8

10:05-07:05

2 stops31h 00m

Brisbane

Fri 14/8

10:00-21:34

2 stops25h 34m

$1,822

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sun 1/11

09:15-15:30

3 stops39h 15m

Brisbane

Wed 2/12

10:45-14:44

2 stops42h 59m

$1,822

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 14/9

10:05-07:20

2 stops31h 15m

Sydney Kingsford Smith

Sun 27/9

09:20-14:47

3 stops43h 27m

$1,841

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sat 7/11

16:35-18:10

3 stops58h 05m

Adelaide

Sat 14/11

18:55-15:51

3 stops60h 26m

$1,859

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 3/12

17:00-17:40

2 stops32h 40m

Sydney Kingsford Smith

Sun 13/12

11:15-20:05

1 stop24h 50m

$1,861

Flights are sorted by cheapest return flights first.

Deals found on 16/6

Showing 1-10 of 54 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 return 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, August is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $354). Flying from Philadelphia to Australia in July is currently the most expensive (average of $1,793). 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.

How far ahead should I book a flight from Philadelphia to Australia?

The best time to book flights from Philadelphia to Australia is 39 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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?

    Philadelphia (PHL) is the airport you will fly out of if you book a flight from Philadelphia to Australia. It is only a 11.2 km journey to Philadelphia (PHL) from Philadelphia’s city centre.

  • How long is the flight from Philadelphia to Australia?

    Air Canada, Qantas Airways, and Qatar Airways can get you from Philadelphia to Australia in just under 29h 40m. Your travel time can differ by up to 3h. Philadelphia and Australia are separated by a distance of 15871 km. Both multi-stop and direct flights can be found to your destination and back.

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

    The most popular route from Philadelphia to Australia is Philadelphia - Melbourne. You may also consider Philadelphia - Sydney Kingsford Smith 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 holiday 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, August is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $354). Flying from Philadelphia to Australia in July is currently the most expensive (average of $1,793). 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

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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Australia from Philadelphia.

Can Cheapflights find flights from Philadelphia to Australia with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Philadelphia to Australia flexibly with Cheapflights today.

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