How long is the flight from Philadelphia to Australia?

United Airlines, Air Canada, and Qantas Airways can get you from Philadelphia to Australia in just under 28h 06m. Your travel time can differ by up to 9h 04m. 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.

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.

$878+ 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 7 September 2026.

Wed 21/1010:05 -

3 stops31h 15m

Wed 28/1010:20 -

3 stops43h 24m

Deal found 6/9$1,554

Tue 20/1015:25 -

2 stops49h 40m

Tue 27/1009:45 -

2 stops42h 59m

Deal found 5/9$1,579

Mon 26/1015:20 -

2 stops26h 15m

Mon 9/1111:20 -

2 stops43h 24m

Deal found 5/9$1,586

Sun 18/1010:05 -

2 stops31h 00m

Sun 25/1009:45 -

2 stops42h 59m

Deal found 2/9$1,630

Tue 3/1115:20 -

2 stops26h 15m

Wed 11/1111:20 -

2 stops43h 24m

Deal found 4/9$1,633

Sun 8/1115:20 -

2 stops26h 15m

Wed 18/1111:20 -

2 stops43h 24m

Deal found 5/9$1,635

Fri 6/1117:05 -

2 stops48h 40m

Sun 22/1110:45 -

2 stops27h 11m

Deal found 3/9$1,644

Mon 19/1007:00 -

3 stops38h 10m

Mon 26/1007:00 -

3 stops48h 21m

Deal found 4/9$1,647

Mon 19/1010:05 -

2 stops31h 15m

Mon 26/1010:20 -

3 stops43h 24m

Deal found 4/9$1,647

Mon 19/1007:00 -

3 stops45h 55m

Mon 26/1019:55 -

3 stops41h 31m

Deal found 4/9$1,657

Tue 8/910:05 -

2 stops31h 00m

Thu 17/920:45 -

3 stops51h 26m

Deal found 3/9$1,671

Mon 2/1120:45 -

1 stop34h 35m

Wed 11/1123:40 -

1 stop31h 10m

Deal found 6/9$1,672

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 7 September 2026.

Tue 9/209:15 -

3 stops38h 20m

Wed 24/206:00 -

3 stops50h 21m

Deal found 5/9$1,646

Wed 17/210:10 -

2 stops30h 20m

Tue 9/311:20 -

1 stop25h 00m

Deal found 4/9$1,746

Thu 19/1109:15 -

3 stops37h 10m

Tue 24/1119:55 -

3 stops59h 56m

Deal found 7/9$1,761

Wed 17/214:14 -

2 stops28h 06m

Wed 24/214:05 -

1 stop21h 43m

Deal found 6/9$1,761

Wed 10/220:45 -

2 stops33h 35m

Thu 25/215:50 -

1 stop39h 00m

Deal found 6/9$1,807

Mon 28/915:25 -

2 stops49h 55m

Tue 13/1010:20 -

1 stop27h 26m

Deal found 2/9$1,843

Thu 19/1120:45 -

1 stop27h 40m

Tue 24/1122:00 -

1 stop32h 20m

Deal found 7/9$2,011

Mon 28/915:42 -

1 stop25h 23m

Tue 13/1013:00 -

2 stops23h 10m

Deal found 2/9$2,027

Mon 2/1110:40 -

2 stops31h 15m

Thu 5/1100:25 -

2 stops31h 11m

Deal found 2/9$2,421

Tue 8/1205:34 -

2 stops34h 56m

Fri 18/1210:40 -

2 stops30h 18m

Deal found 2/9$2,449

Tue 29/1208:00 -

2 stops34h 45m

Thu 14/110:55 -

2 stops45h 01m

Deal found 2/9$2,625

Mon 2/1109:15 -

3 stops38h 20m

Wed 11/1106:00 -

3 stops50h 21m

Deal found 3/9$1,696

Tue 29/1213:01 -

3 stops34h 09m

Thu 14/107:20 -

3 stops45h 55m

Deal found 2/9$3,620

Tue 17/1119:40 -

2 stops44h 50m

Fri 4/1211:20 -

1 stop20h 38m

Deal found 5/9$1,822

Mon 19/1007:00 -

3 stops40h 40m

Mon 26/1006:00 -

3 stops48h 21m

Deal found 4/9$1,705

Thu 17/921:30 -

1 stop30h 00m

Mon 28/922:10 -

1 stop30h 20m

Deal found 6/9$1,976

Sun 8/1115:20 -

2 stops50h 25m

Thu 12/1110:45 -

2 stops42h 59m

Deal found 4/9$2,012

Wed 30/1208:00 -

2 stops32h 30m

Tue 12/111:20 -

2 stops25h 13m

Deal found 3/9$1,836

Mon 19/1021:30 -

2 stops46h 05m

Mon 26/1022:00 -

1 stop32h 20m

Deal found 4/9$1,721

Thu 5/1120:45 -

2 stops42h 40m

Sun 15/1115:50 -

1 stop39h 00m

Deal found 4/9$1,987

Fri 6/1118:21 -

1 stop22h 09m

Sun 22/1109:05 -

2 stops52h 52m

Deal found 3/9$1,848

Thu 24/1210:41 -

1 stop26h 19m

Fri 8/107:00 -

2 stops29h 35m

Deal found 3/9$2,283

Sun 20/1218:51 -

2 stops45h 39m

Wed 30/1211:20 -

2 stops33h 11m

Deal found 3/9$1,862

Sat 7/1120:45 -

2 stops32h 55m

Sun 22/1123:40 -

2 stops35h 34m

Deal found 2/9$2,059

Mon 9/1110:40 -

2 stops44h 25m

Thu 12/1100:45 -

2 stops33h 51m

Deal found 5/9$2,521

Thu 19/1109:15 -

2 stops37h 10m

Tue 24/1119:55 -

2 stops59h 56m

Deal found 7/9$1,900

Fri 2/1017:30 -

2 stops32h 00m

Sat 10/1006:00 -

2 stops39h 16m

Deal found 6/9$2,469

Mon 28/1209:50 -

2 stops54h 40m

Tue 12/111:20 -

2 stops25h 13m

Deal found 5/9$1,862

Sat 17/1021:30 -

1 stop34h 35m

Sat 24/1023:45 -

2 stops36h 26m

Deal found 2/9$2,138

Sun 18/1007:00 -

3 stops40h 40m

Sun 25/1018:05 -

3 stops60h 16m

Deal found 3/9$1,958

Find flight deals from Philadelphia to Australia

Round-trip from	$1,510
One-way from	$878
Popular in	January
Cheapest in	February
Average price	$1,927

Qantas Airways
28/10-12/11
3 total stops
61h 24m total
Philadelphia to Australia

Search Deals

8/12-31/12
2 total stops
48h 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 ($38 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Tue 8/12

14:45-05:50

2 stops48h 05m

Brisbane

Wed 31/12

00:00-09:00

Nonstop0h 00m

$878

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Fri 25/9

17:45-07:30

2 stops47h 45m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$927

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 22/9

17:45-07:30

2 stops47h 45m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$953

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Mon 7/12

14:45-05:50

2 stops48h 05m

Brisbane

Wed 31/12

00:00-09:00

Nonstop0h 00m

$963

PhiladelphiaMelbourne

PHL Philadelphia - AVV Melbourne Avalon

PHLAVV

Philadelphia

Tue 6/10

08:41-22:50

3 stops47h 09m

Melbourne Avalon

Wed 31/12

00:00-09:00

Nonstop0h 00m

$989

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 2/3

17:56-20:15

3 stops58h 19m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,035

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Fri 15/1

18:14-06:25

2 stops44h 11m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,173

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 4/1

13:51-13:00

2 stops55h 09m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,247

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 4/1

06:29-13:00

2 stops38h 31m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,266

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Thu 24/12

09:00-08:30

3 stops56h 30m

Brisbane

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,289

Flights are sorted by cheapest return flights first.

Deals found on 6/9

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-BNE

PHL-SYD

PHL-PER

PHL-MEL

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-BNE

PHL-SYD

PHL-PER

PHL-MEL

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 $1,568). Flying from Philadelphia to Australia in July is currently the most expensive (average of $2,484). 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?
United Airlines, Air Canada, and Qantas Airways can get you from Philadelphia to Australia in just under 28h 06m. Your travel time can differ by up to 9h 04m. 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 - 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 $1,568). Flying from Philadelphia to Australia in July is currently the most expensive (average of $2,484). 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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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 $878

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. 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 7 September 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 7 September 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 7 September 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 7 September 2026.

Last-minute flights from Philadelphia to AustraliaDiscover last-minute flight deals from Philadelphia to Australia. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals from Philadelphia to Australia. Data last updated 7 September 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 7 September 2026.

Search for one-way flight options from Philadelphia to Australia. Find affordable one-way fares based on user searches. Data last updated 7 September 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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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 7 September 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 7 September 2026.

Last-minute flights from Philadelphia to Australia
Discover last-minute flight deals from Philadelphia to Australia. Data last updated 7 September 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 7 September 2026.