How long is the flight from Philadelphia to Australia?

American Airlines, United Airlines, and Qatar Airways can get you from Philadelphia to Australia in just under 22h 17m. Your travel time can differ by up to 10h 08m. Philadelphia and Australia are separated by a distance of 15377 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.

$995+ Cheap Flights from Philadelphia to Australia

Cheap flight deals from Philadelphia to Australia

Enter your travel dates to find the best prices.

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Best

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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 20 August 2026.

Wed 16/910:37 -

3 stops35h 13m

Wed 23/913:15 -

3 stops33h 50m

Deal found 19/8$1,623

Sun 23/815:25 -

2 stops25h 40m

Mon 28/910:00 -

2 stops42h 47m

Deal found 19/8$1,658

Sat 22/815:25 -

2 stops49h 40m

Mon 28/910:00 -

2 stops42h 47m

Deal found 19/8$1,672

Wed 4/1120:30 -

1 stop34h 50m

Wed 11/1123:40 -

1 stop31h 00m

Deal found 16/8$1,695

Tue 27/1021:45 -

1 stop34h 35m

Tue 10/1123:40 -

1 stop31h 00m

Deal found 16/8$1,700

Tue 15/910:05 -

2 stops31h 15m

Mon 21/909:20 -

2 stops26h 12m

Deal found 17/8$1,705

Sun 23/810:05 -

2 stops31h 00m

Mon 28/920:40 -

3 stops40h 06m

Deal found 19/8$1,707

Wed 4/1115:20 -

2 stops26h 25m

Wed 11/1110:45 -

2 stops42h 59m

Deal found 16/8$1,709

Wed 16/910:05 -

2 stops31h 00m

Wed 23/910:00 -

2 stops25h 32m

Deal found 19/8$1,710

Sun 8/1115:20 -

2 stops26h 15m

Wed 18/1111:20 -

2 stops43h 24m

Deal found 17/8$1,712

Tue 27/1009:15 -

3 stops37h 50m

Tue 10/1106:00 -

3 stops32h 56m

Deal found 16/8$1,723

Tue 22/910:37 -

3 stops45h 48m

Sun 4/1006:00 -

3 stops42h 05m

Deal found 18/8$1,731

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 20 August 2026.

Wed 4/1109:15 -

3 stops46h 00m

Wed 11/1106:00 -

3 stops50h 21m

Deal found 16/8$1,723

Wed 4/1114:30 -

2 stops24h 20m

Wed 11/1113:10 -

2 stops22h 41m

Deal found 16/8$1,760

Sun 7/218:13 -

1 stop22h 17m

Mon 22/211:40 -

1 stop24h 40m

Deal found 17/8$1,771

Wed 10/220:45 -

2 stops32h 25m

Sun 14/319:50 -

2 stops34h 30m

Deal found 15/8$1,785

Sat 31/1021:30 -

1 stop30h 00m

Wed 4/1121:55 -

1 stop31h 45m

Deal found 16/8$1,854

Fri 8/114:30 -

2 stops27h 40m

Mon 18/109:40 -

1 stop21h 56m

Deal found 16/8$1,864

Sun 7/209:15 -

3 stops37h 10m

Thu 11/206:00 -

3 stops32h 26m

Deal found 15/8$2,116

Sun 13/918:36 -

2 stops28h 29m

Sun 20/918:45 -

3 stops79h 13m

Deal found 16/8$2,520

Tue 27/1009:15 -

3 stops37h 50m

Tue 10/1106:00 -

3 stops32h 56m

Deal found 16/8$1,723

Sun 8/1120:30 -

1 stop30h 00m

Thu 12/1121:55 -

1 stop31h 45m

Deal found 19/8$1,855

Sun 20/1219:37 -

2 stops44h 53m

Wed 30/1211:40 -

2 stops37h 50m

Deal found 19/8$1,862

Wed 4/1113:47 -

1 stop25h 03m

Wed 11/1113:10 -

1 stop22h 22m

Deal found 16/8$1,753

Thu 29/1021:45 -

1 stop34h 35m

Mon 2/1123:40 -

1 stop31h 10m

Deal found 15/8$1,975

Mon 14/917:45 -

1 stop23h 10m

Sun 27/917:30 -

2 stops27h 35m

Deal found 17/8$2,019

Sun 20/1210:37 -

2 stops53h 53m

Thu 31/1211:40 -

2 stops37h 16m

Deal found 18/8$1,872

Thu 29/1009:15 -

3 stops41h 35m

Mon 2/1107:05 -

3 stops31h 51m

Deal found 17/8$2,160

Mon 9/1120:45 -

1 stop34h 35m

Fri 13/1123:40 -

1 stop31h 10m

Deal found 19/8$1,977

Sun 8/1116:21 -

1 stop22h 34m

Wed 18/1111:05 -

2 stops25h 27m

Deal found 18/8$1,799

Tue 15/916:32 -

2 stops30h 33m

Tue 22/906:10 -

2 stops26h 32m

Deal found 17/8$2,181

Fri 18/921:30 -

1 stop29h 20m

Tue 22/922:45 -

1 stop29h 45m

Deal found 16/8$2,091

Sat 13/210:10 -

2 stops30h 20m

Sat 27/211:40 -

1 stop20h 18m

Deal found 17/8$1,912

Sun 13/917:30 -

2 stops29h 35m

Sun 20/906:10 -

2 stops28h 29m

Deal found 16/8$2,181

Tue 26/120:45 -

2 stops33h 40m

Thu 4/222:10 -

1 stop32h 40m

Deal found 19/8$2,002

Wed 10/220:40 -

2 stops32h 30m

Sun 14/318:20 -

2 stops36h 10m

Deal found 15/8$1,841

Fri 12/217:10 -

2 stops26h 20m

Sun 14/317:40 -

2 stops37h 15m

Deal found 18/8$2,270

Fri 8/109:30 -

1 stop31h 00m

Mon 18/111:40 -

1 stop24h 40m

Deal found 16/8$1,926

Wed 27/120:45 -

3 stops51h 35m

Fri 5/222:10 -

1 stop32h 40m

Deal found 19/8$2,005

Fri 11/917:30 -

2 stops28h 40m

Fri 18/906:10 -

2 stops24h 18m

Deal found 18/8$2,305

Sun 4/1006:05 -

2 stops34h 25m

Sun 11/1010:30 -

1 stop20h 58m

Deal found 19/8$1,989

Sun 24/120:45 -

1 stop30h 35m

Thu 4/219:15 -

2 stops35h 35m

Deal found 19/8$2,012

Find flight deals from Philadelphia to Australia

Round-trip from	$1,623
One-way from	$995
Popular in	January
Cheapest in	February
Average price	$2,103

16/9-23/9
6 total stops
69h 03m total
Philadelphia to Australia

Search Deals

14/9
3 total stops
43h 05m 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 ($40 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

PhiladelphiaMelbourne

PHL Philadelphia - AVV Melbourne Avalon

PHLAVV

Philadelphia

Wed 4/11

09:15-23:15

3 stops46h 00m

Melbourne Avalon

Wed 11/11

06:00-16:21

3 stops50h 21m

$1,723

PhiladelphiaMelbourne

PHL Philadelphia - AVV Melbourne Avalon

PHLAVV

Philadelphia

Tue 27/10

09:15-14:05

3 stops37h 50m

Melbourne Avalon

Tue 10/11

06:00-22:56

3 stops32h 56m

$1,723

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Wed 4/11

13:47-05:50

1 stop25h 03m

Brisbane

Wed 11/11

13:10-20:32

1 stop22h 22m

$1,753

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Wed 4/11

14:30-05:50

2 stops24h 20m

Brisbane

Wed 11/11

13:10-20:51

2 stops22h 41m

$1,760

Fastest return journey

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Sun 7/2

18:13-07:30

1 stop22h 17m

Brisbane

Mon 22/2

11:40-21:20

1 stop24h 40m

$1,771

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Wed 10/2

20:45-20:40

2 stops32h 25m

Adelaide

Sun 14/3

19:50-15:50

2 stops34h 30m

$1,785

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sun 8/11

16:21-06:55

1 stop22h 34m

Sydney Kingsford Smith

Wed 18/11

11:05-20:32

2 stops25h 27m

$1,799

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Wed 10/2

20:40-20:40

2 stops32h 30m

Adelaide

Sun 14/3

18:20-16:00

2 stops36h 10m

$1,841

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Sat 31/10

21:30-17:30

1 stop30h 00m

Brisbane

Wed 4/11

21:55-14:40

1 stop31h 45m

$1,854

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Sun 8/11

20:30-17:30

1 stop30h 00m

Brisbane

Thu 12/11

21:55-14:40

1 stop31h 45m

$1,855

Flights are sorted by cheapest return flights first.

Deals found on 16/8

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-SYD

PHL-BNE

PHL-PER

PHL-CNS

PHL-AVV

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-SYD

PHL-BNE

PHL-PER

PHL-CNS

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 $1,593). Flying from Philadelphia to Australia in April is currently the most expensive (average of $2,556). 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?
American Airlines, United Airlines, and Qatar Airways can get you from Philadelphia to Australia in just under 22h 17m. Your travel time can differ by up to 10h 08m. Philadelphia and Australia are separated by a distance of 15377 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 $1,593). Flying from Philadelphia to Australia in April is currently the most expensive (average of $2,556). 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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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.

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Cheap flights from Philadelphia to Australia from $995

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 14/9. 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 20 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 20 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 20 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 20 August 2026.

Last-minute flights from Philadelphia to AustraliaDiscover last-minute flight deals from Philadelphia to Australia. Data last updated 20 August 2026 and is based on user searches.

Discover last-minute flight deals from Philadelphia to Australia. Data last updated 20 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 20 August 2026.

Search for one-way flight options from Philadelphia to Australia. Find affordable one-way fares based on user searches. Data last updated 20 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

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Philadelphia and Australia flights

Browse other Philadelphia and Australia flight options. Last updated on 20 August 2026.

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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 20 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 20 August 2026.

Last-minute flights from Philadelphia to Australia
Discover last-minute flight deals from Philadelphia to Australia. Data last updated 20 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 20 August 2026.