How long is the flight from Philadelphia to Australia?

Qatar Airways, United Airlines, and JetBlue can get you from Philadelphia to Australia in just under 28h. Your travel time can differ by up to 17h 39m. Philadelphia and Australia are separated by a distance of 16990 km. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Australia ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Australia when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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.

What is the cheapest time of day to fly from PHL to AU?

When flying from Philadelphia to Australia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

$842+ Cheap Flights from Philadelphia to Australia

Cheap flight deals from Philadelphia to Australia

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 August 2026.

Mon 28/906:00 -

3 stops39h 50m

Mon 5/1014:15 -

3 stops34h 15m

Deal found 26/8$1,574

Tue 13/1010:05 -

2 stops31h 00m

Tue 20/1010:00 -

2 stops25h 32m

Deal found 28/8$1,584

Sun 18/1010:05 -

2 stops31h 00m

Mon 2/1110:45 -

2 stops42h 59m

Deal found 25/8$1,598

Tue 22/908:41 -

3 stops37h 09m

Mon 28/913:15 -

3 stops34h 15m

Deal found 26/8$1,612

Wed 23/910:05 -

2 stops31h 00m

Wed 30/910:00 -

2 stops25h 32m

Deal found 28/8$1,635

Sun 8/1115:20 -

2 stops26h 15m

Wed 18/1111:20 -

2 stops43h 24m

Deal found 27/8$1,638

Mon 23/1110:00 -

2 stops31h 35m

Fri 27/1111:20 -

2 stops34h 20m

Deal found 28/8$1,652

Mon 12/1016:17 -

2 stops49h 03m

Tue 20/1010:20 -

2 stops27h 26m

Deal found 24/8$1,669

Sun 18/1007:00 -

3 stops38h 30m

Mon 2/1106:45 -

3 stops31h 11m

Deal found 25/8$1,690

Wed 23/910:37 -

3 stops45h 48m

Wed 30/913:15 -

3 stops33h 50m

Deal found 24/8$1,690

Wed 23/906:00 -

3 stops38h 35m

Wed 30/911:35 -

3 stops35h 30m

Deal found 28/8$1,718

Sat 12/921:30 -

1 stop28h 00m

Tue 22/922:00 -

1 stop30h 00m

Deal found 26/8$1,722

Best flights from Philadelphia to Australia
Discover carefully curated flight deals from Philadelphia to Australia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Sat 12/921:30 -

1 stop28h 00m

Tue 22/922:00 -

1 stop30h 00m

Deal found 26/8$1,722

Sat 12/921:30 -

1 stop28h 00m

Tue 22/907:40 -

2 stops44h 20m

Deal found 26/8$1,731

Sun 20/1218:51 -

2 stops45h 39m

Wed 30/1211:20 -

2 stops41h 53m

Deal found 26/8$1,782

Sun 18/1021:30 -

1 stop30h 00m

Mon 2/1121:55 -

1 stop31h 55m

Deal found 25/8$1,805

Thu 10/1220:23 -

2 stops45h 07m

Sun 17/110:40 -

2 stops27h 22m

Deal found 24/8$1,844

Sat 19/1217:30 -

2 stops26h 00m

Mon 18/122:45 -

1 stop26h 11m

Deal found 28/8$2,423

Mon 2/1110:40 -

2 stops31h 15m

Thu 5/1100:25 -

2 stops31h 11m

Deal found 24/8$2,427

Fri 2/1016:35 -

2 stops27h 45m

Sat 10/1006:00 -

2 stops28h 35m

Deal found 25/8$2,439

Wed 14/1018:30 -

2 stops27h 35m

Mon 19/1018:30 -

3 stops52h 19m

Deal found 29/8$2,931

Sat 10/1010:05 -

3 stops34h 35m

Sat 17/1006:00 -

3 stops29h 32m

Deal found 26/8$3,214

Sun 1/1109:15 -

3 stops46h 00m

Sun 8/1106:00 -

3 stops32h 56m

Deal found 24/8$1,769

Mon 22/220:45 -

2 stops33h 35m

Thu 4/322:10 -

1 stop32h 40m

Deal found 24/8$1,811

Wed 9/1209:45 -

2 stops30h 45m

Fri 15/111:20 -

1 stop20h 38m

Deal found 24/8$1,821

Sun 8/1120:45 -

1 stop29h 45m

Thu 12/1121:55 -

1 stop31h 55m

Deal found 24/8$1,833

Fri 23/1007:00 -

3 stops39h 05m

Mon 2/1107:55 -

3 stops48h 26m

Deal found 28/8$1,775

Sun 8/1120:45 -

2 stops33h 35m

Wed 18/1115:50 -

1 stop39h 00m

Deal found 25/8$1,812

Wed 9/1209:30 -

1 stop31h 00m

Sat 16/111:20 -

1 stop20h 38m

Deal found 24/8$1,821

Mon 14/912:29 -

2 stops28h 21m

Sun 27/909:15 -

2 stops34h 35m

Deal found 27/8$2,039

Sat 16/118:13 -

2 stops47h 47m

Sat 23/107:35 -

2 stops48h 21m

Deal found 24/8$1,832

Wed 14/1008:00 -

2 stops36h 40m

Mon 19/1007:05 -

2 stops30h 41m

Deal found 29/8$1,885

Sat 19/921:30 -

2 stops36h 25m

Sat 10/1023:45 -

1 stop29h 45m

Deal found 24/8$1,942

Sun 11/1007:00 -

2 stops34h 50m

Sun 18/1011:00 -

2 stops26h 12m

Deal found 27/8$2,177

Sun 11/1021:30 -

1 stop29h 20m

Sun 18/1023:45 -

1 stop29h 45m

Deal found 27/8$2,223

Mon 9/1110:40 -

2 stops44h 20m

Thu 12/1100:45 -

2 stops33h 51m

Deal found 24/8$2,458

Sun 13/1209:30 -

1 stop31h 00m

Fri 15/111:20 -

1 stop25h 00m

Deal found 24/8$1,904

Mon 9/1120:45 -

1 stop34h 35m

Fri 13/1123:40 -

1 stop31h 10m

Deal found 24/8$1,953

Sat 24/1015:30 -

1 stop24h 25m

Sat 7/1111:05 -

2 stops25h 09m

Deal found 29/8$2,024

Wed 23/911:04 -

2 stops29h 26m

Wed 30/910:30 -

1 stop20h 58m

Deal found 28/8$1,961

Sat 12/921:30 -

1 stop34h 35m

Tue 22/922:45 -

1 stop29h 45m

Deal found 25/8$2,035

Mon 12/1021:30 -

2 stops33h 50m

Tue 20/1015:50 -

1 stop37h 40m

Deal found 26/8$2,162

Find flight deals from Philadelphia to Australia

Round-trip from	$1,574
One-way from	$842
Popular in	January
Cheapest in	February
Average price	$2,078

28/9-5/10
6 total stops
74h 05m total
Philadelphia to Australia

Search Deals

5/11
2 total stops
32h 25m total
Philadelphia to Australia

Search Deals

High demand for flights, 0% potential price rise

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($38 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Cheapflights Fare Finder

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

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Sat 12/9

21:30-15:00

1 stop28h 00m

Adelaide

Tue 22/9

22:00-14:30

1 stop30h 00m

$1,722

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Sat 12/9

21:30-15:00

1 stop28h 00m

Adelaide

Tue 22/9

07:40-14:30

2 stops44h 20m

$1,731

PhiladelphiaMelbourne

PHL Philadelphia - AVV Melbourne Avalon

PHLAVV

Philadelphia

Sun 1/11

09:15-23:15

3 stops46h 00m

Melbourne Avalon

Sun 8/11

06:00-22:56

3 stops32h 56m

$1,769

PhiladelphiaCanberra

PHL Philadelphia - CBR Canberra

PHLCBR

Philadelphia

Fri 23/10

07:00-13:05

3 stops39h 05m

Canberra

Mon 2/11

07:55-16:21

3 stops48h 26m

$1,775

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Sun 20/12

18:51-07:30

2 stops45h 39m

Brisbane

Wed 30/12

11:20-14:13

2 stops41h 53m

$1,782

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Sun 18/10

21:30-17:30

1 stop30h 00m

Brisbane

Mon 2/11

21:55-14:50

1 stop31h 55m

$1,805

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 22/2

20:45-22:20

2 stops33h 35m

Sydney Kingsford Smith

Thu 4/3

22:10-14:50

1 stop32h 40m

$1,811

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sun 8/11

20:45-22:20

2 stops33h 35m

Sydney Kingsford Smith

Wed 18/11

15:50-14:50

1 stop39h 00m

$1,812

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Wed 9/12

09:45-07:30

2 stops30h 45m

Brisbane

Fri 15/1

11:20-16:58

1 stop20h 38m

$1,821

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Wed 9/12

09:30-07:30

1 stop31h 00m

Brisbane

Sat 16/1

11:20-16:58

1 stop20h 38m

$1,821

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

PHL-ADL

PHL-BNE

PHL-MEL

PHL-PER

PHL-MCY

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

PHL-AU0

PHL-ADL

PHL-BNE

PHL-MEL

PHL-PER

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 $1,521). Flying from Philadelphia to Australia in July is currently the most expensive (average of $2,503). 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 34 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

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?
Qatar Airways, United Airlines, and JetBlue can get you from Philadelphia to Australia in just under 28h. Your travel time can differ by up to 17h 39m. Philadelphia and Australia are separated by a distance of 16990 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 - 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 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, February is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $1,521). Flying from Philadelphia to Australia in July is currently the most expensive (average of $2,503). 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.

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How does Cheapflights help users find flights from Philadelphia to Australia?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Philadelphia to Australia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Australia?

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.

Can Cheapflights notify me if prices for flights from Philadelphia to Australia become cheaper?

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Cheap flights from Philadelphia to Australia from $842

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Philadelphia to Australia

Cheapest flights from Philadelphia to AustraliaExplore 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 August 2026.

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 August 2026.

Best flights from Philadelphia to AustraliaDiscover carefully curated flight deals from Philadelphia to Australia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Discover carefully curated flight deals from Philadelphia to Australia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Last-minute flights from Philadelphia to AustraliaDiscover last-minute flight deals from Philadelphia to Australia. Data last updated 29 August 2026 and is based on user searches.

Discover last-minute flight deals from Philadelphia to Australia. Data last updated 29 August 2026 and is based on user searches.

One-way flights from Philadelphia to AustraliaSearch for one-way flight options from Philadelphia to Australia. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

Search for one-way flight options from Philadelphia to Australia. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

Find flight deals from Philadelphia to Australia

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

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.

Cheapflights Insights

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

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

The best time to book flights from Philadelphia to Australia is 34 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

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

How long is the flight from Philadelphia to Australia?

What are the most popular routes from Philadelphia to Australia?

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

How can I find direct flights from Philadelphia to Australia?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Australia

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Complete your trip

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Philadelphia and Australia flights

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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 August 2026.

Best flights from Philadelphia to Australia
Discover carefully curated flight deals from Philadelphia to Australia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Last-minute flights from Philadelphia to Australia
Discover last-minute flight deals from Philadelphia to Australia. Data last updated 29 August 2026 and is based on user searches.

One-way flights from Philadelphia to Australia
Search for one-way flight options from Philadelphia to Australia. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.