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Cheap flights from Philadelphia to Australia from $964

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 29/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
28 Jun — 5 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 29 May 2026.

Wed 27/515:29
PHL
-
BNE
1 stop23h 31m
Qantas Airways
Wed 3/620:35
BNE
-
PHL
1 stop24h 25m
Qantas Airways
Deal found 27/5$1,695
Wed 27/506:00
PHL
-
BNE
2 stops35h 05m
Air Canada
Wed 3/610:00
BNE
-
PHL
2 stops33h 31m
Air Canada
Deal found 27/5$1,697
Sat 30/515:25
PHL
-
SYD
2 stops49h 55m
Air Canada
Sun 14/609:20
SYD
-
PHL
2 stops34h 11m
Air Canada
Deal found 28/5$1,697
Sun 8/1115:20
PHL
-
SYD
2 stops26h 15m
Air Canada
Wed 18/1111:20
SYD
-
PHL
2 stops43h 24m
Air Canada
Deal found 29/5$1,705
Mon 14/910:05
PHL
-
SYD
2 stops31h 15m
Air Canada
Sun 27/909:20
SYD
-
PHL
2 stops26h 12m
Air Canada
Deal found 28/5$1,706
Wed 24/615:29
PHL
-
SYD
1 stop25h 36m
Qantas Airways
Wed 15/709:10
SYD
-
PHL
1 stop23h 29m
Qantas Airways
Deal found 27/5$1,711
Mon 2/1115:20
PHL
-
SYD
2 stops26h 15m
Air Canada
Sun 8/1111:20
SYD
-
PHL
2 stops44h 31m
Air Canada
Deal found 27/5$1,712
Wed 4/1109:15
PHL
-
SYD
1 stop32h 20m
Air Canada
Wed 18/1111:20
SYD
-
PHL
2 stops43h 24m
Air Canada
Deal found 28/5$1,739
Fri 20/1115:20
PHL
-
BNE
2 stops26h 25m
Air Canada
Sun 29/1110:45
BNE
-
PHL
2 stops42h 59m
Air Canada
Deal found 27/5$1,751
Tue 30/606:00
PHL
-
BNE
2 stops35h 05m
Air Canada
Wed 28/1009:45
BNE
-
PHL
2 stops42h 59m
Air Canada
Deal found 25/5$1,775
Fri 20/1117:07
PHL
-
BNE
1 stop22h 23m
Qantas Airways
Sun 29/1109:15
BNE
-
PHL
1 stop20h 22m
Qantas Airways
Deal found 27/5$1,792
Thu 3/915:25
PHL
-
BNE
2 stops49h 40m
Air Canada
Tue 15/910:15
BNE
-
PHL
2 stops25h 17m
Air Canada
Deal found 25/5$1,806

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 29 May 2026.

Round-trip from

$1,705

One-way from

$964

Popular in

December

Cheapest in

February

Average price

$2,026
Air Canada
  • Air Canada
  • 8/11-18/11
  • 4 total stops
  • 69h 39m total
  • Philadelphia to Australia
Search Deals
Delta
  • Delta
  • 29/6
  • 2 total stops
  • 34h 25m total
  • Philadelphia to Australia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($427 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($96 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 29 May 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

Fri 20/11

09:15-09:00

3 stops56h 45m

Brisbane

Sun 29/11

10:45-14:44

2 stops42h 59m

$1,806

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Mon 2/11

18:13-10:00

1 stop23h 47m

Melbourne

Wed 11/11

13:00-21:20

1 stop24h 20m

$1,824

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 1/7

12:40-06:50

2 stops28h 10m

Sydney Kingsford Smith

Mon 13/7

09:15-19:25

2 stops24h 10m

$1,842

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Mon 29/6

15:10-08:15

2 stops27h 05m

Melbourne

Sat 4/7

18:00-01:23

2 stops45h 23m

$1,860

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Fri 2/10

16:35-13:35

2 stops31h 00m

Brisbane

Fri 23/10

20:35-07:05

1 stop24h 30m

$1,868

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Fri 2/10

10:05-07:05

2 stops31h 00m

Brisbane

Fri 23/10

10:00-21:32

2 stops25h 32m

$1,910

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Thu 12/11

15:30-10:00

2 stops26h 30m

Melbourne

Mon 16/11

12:00-16:56

2 stops44h 56m

$1,931

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 1/7

13:31-07:00

2 stops27h 29m

Sydney Kingsford Smith

Mon 13/7

10:20-01:23

1 stop29h 03m

$1,947

PhiladelphiaCanberra

PHL - CBR

PHLCBR

Philadelphia

Mon 8/6

10:25-14:55

2 stops38h 30m

Canberra

Sun 20/9

06:10-09:45

2 stops41h 35m

$1,953

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Mon 8/6

09:46-05:00

1 stop29h 14m

Brisbane

Mon 22/6

20:35-06:36

2 stops24h 01m

$1,961

Flights are sorted by cheapest return flights first.

Deals found on 29/5

Showing 1-10 of 48 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 $350). Flying from Philadelphia to Australia in October is currently the most expensive (average of $1,493). 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 41 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, United Airlines, and Delta can get you from Philadelphia to Australia in just under 23h 47m. Your travel time can differ by up to 32h 58m. Philadelphia and Australia are separated by a distance of 16549 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 $350). Flying from Philadelphia to Australia in October is currently the most expensive (average of $1,493). 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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