How long is the flight from Philadelphia to Australia?

Air Canada, Qatar Airways, and United Airlines can get you from Philadelphia to Australia in just under 33h 35m. Your travel time can differ by up to 11h 18m. 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.

$966+ 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 17 September 2026.

Tue 13/1015:57 -

1 stop25h 08m

Tue 20/1010:10 -

1 stop21h 09m

Deal found 15/9$1,572

Wed 28/1015:20 -

2 stops26h 25m

Wed 4/1110:45 -

2 stops42h 59m

Deal found 13/9$1,598

Wed 28/1015:20 -

2 stops26h 25m

Wed 4/1106:05 -

3 stops31h 51m

Deal found 13/9$1,635

Fri 20/1115:20 -

2 stops26h 25m

Sun 29/1110:45 -

2 stops42h 59m

Deal found 15/9$1,650

Mon 2/1115:20 -

2 stops26h 15m

Sun 8/1111:20 -

2 stops43h 24m

Deal found 16/9$1,653

Sun 8/1115:20 -

2 stops26h 15m

Wed 18/1111:20 -

2 stops43h 24m

Deal found 14/9$1,654

Tue 27/1013:20 -

3 stops28h 15m

Tue 3/1111:20 -

2 stops43h 24m

Deal found 13/9$1,656

Sat 31/1015:20 -

2 stops27h 25m

Sat 7/1110:45 -

2 stops27h 11m

Deal found 15/9$1,657

Thu 29/1009:15 -

3 stops38h 10m

Thu 5/1106:00 -

3 stops49h 51m

Deal found 13/9$1,657

Sat 31/1013:16 -

3 stops29h 29m

Sat 7/1110:45 -

2 stops27h 11m

Deal found 15/9$1,659

Sat 7/1117:05 -

2 stops48h 30m

Sun 15/1111:20 -

2 stops43h 24m

Deal found 15/9$1,660

Tue 3/1109:15 -

3 stops43h 05m

Mon 23/1120:55 -

3 stops42h 01m

Deal found 14/9$1,666

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 17 September 2026.

Thu 29/1009:15 -

3 stops38h 10m

Thu 5/1106:00 -

3 stops49h 51m

Deal found 13/9$1,657

Tue 3/1109:15 -

3 stops43h 05m

Mon 23/1120:55 -

3 stops42h 01m

Deal found 14/9$1,666

Wed 28/1010:54 -

2 stops29h 36m

Wed 4/1111:20 -

1 stop20h 55m

Deal found 13/9$1,768

Wed 17/220:45 -

2 stops33h 35m

Wed 24/215:50 -

1 stop39h 00m

Deal found 16/9$1,827

Sun 27/1210:41 -

1 stop26h 19m

Tue 12/118:50 -

2 stops41h 45m

Deal found 16/9$1,893

Thu 29/1021:45 -

1 stop29h 05m

Thu 5/1123:40 -

1 stop31h 10m

Deal found 14/9$2,004

Mon 12/1015:57 -

2 stops30h 08m

Mon 19/1006:10 -

2 stops25h 09m

Deal found 12/9$2,180

Fri 23/1020:13 -

2 stops67h 47m

Thu 28/110:10 -

2 stops28h 52m

Deal found 13/9$2,295

Mon 4/108:00 -

2 stops35h 25m

Thu 21/112:05 -

2 stops35h 10m

Deal found 15/9$2,580

Thu 5/1109:15 -

3 stops46h 00m

Thu 19/1120:55 -

3 stops42h 01m

Deal found 17/9$1,770

Sun 20/1219:37 -

2 stops44h 53m

Wed 30/1211:20 -

2 stops37h 36m

Deal found 16/9$1,857

Sat 31/1017:30 -

2 stops27h 00m

Sat 7/1112:00 -

1 stop20h 27m

Deal found 15/9$1,916

Thu 29/1021:45 -

2 stops43h 45m

Thu 5/1122:00 -

1 stop32h 20m

Deal found 13/9$2,055

Mon 8/309:15 -

3 stops46h 05m

Mon 15/322:55 -

3 stops52h 55m

Deal found 14/9$2,059

Thu 29/1015:57 -

2 stops30h 08m

Thu 5/1106:05 -

2 stops25h 52m

Deal found 13/9$1,918

Tue 29/1206:24 -

2 stops58h 06m

Mon 11/119:50 -

2 stops55h 15m

Deal found 13/9$1,930

Sun 8/1120:45 -

1 stop29h 45m

Thu 12/1121:55 -

1 stop31h 55m

Deal found 15/9$2,140

Mon 2/1108:00 -

2 stops34h 55m

Wed 11/1112:10 -

3 stops37h 42m

Deal found 14/9$2,062

Fri 8/113:30 -

2 stops48h 15m

Tue 26/116:10 -

1 stop38h 40m

Deal found 13/9$2,070

Fri 6/1120:45 -

1 stop33h 00m

Thu 19/1122:45 -

1 stop29h 05m

Deal found 12/9$2,218

Tue 13/1013:24 -

2 stops27h 31m

Tue 20/1011:20 -

1 stop21h 01m

Deal found 13/9$2,050

Sat 31/1009:45 -

3 stops31h 50m

Sat 7/1111:50 -

3 stops37h 55m

Deal found 16/9$2,081

Sat 7/1120:45 -

1 stop27h 40m

Wed 11/1122:00 -

1 stop32h 20m

Deal found 16/9$2,091

Thu 29/1006:00 -

3 stops41h 15m

Thu 5/1112:05 -

2 stops26h 22m

Deal found 13/9$2,595

Mon 12/1018:30 -

1 stop22h 25m

Mon 19/1010:30 -

2 stops28h 00m

Deal found 12/9$2,057

Mon 7/1209:20 -

2 stops31h 15m

Sat 12/1214:05 -

3 stops38h 09m

Deal found 15/9$2,088

Sun 15/1120:45 -

1 stop33h 00m

Sat 21/1111:20 -

2 stops40h 30m

Deal found 16/9$2,129

Tue 13/1018:30 -

2 stops27h 35m

Tue 20/1019:45 -

3 stops51h 04m

Deal found 15/9$2,628

Wed 13/120:45 -

2 stops33h 35m

Mon 1/219:30 -

2 stops35h 20m

Deal found 13/9$2,157

Thu 5/1118:21 -

1 stop24h 09m

Thu 19/1112:45 -

1 stop26h 04m

Deal found 16/9$2,182

Find flight deals from Philadelphia to Australia

Round-trip from	$1,572
One-way from	$966
Popular in	January
Cheapest in	February
Average price	$1,951

Qantas Airways
13/10-20/10
2 total stops
46h 17m total
Philadelphia to Australia

Search Deals

27/2-31/12
3 total stops
46h 00m 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 ($41 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

Fastest return journey

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 23/9

13:10-07:05

1 stop27h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$975

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 23/2

06:15-06:25

2 stops32h 10m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,046

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sat 27/2

17:56-18:50

2 stops56h 54m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,126

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sun 29/11

17:05-20:50

2 stops35h 45m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,181

PhiladelphiaMelbourne

PHL Philadelphia - AVV Melbourne Avalon

PHLAVV

Philadelphia

Fri 13/11

07:02-07:35

3 stops56h 33m

Melbourne Avalon

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,185

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Fri 13/11

08:30-00:15

3 stops47h 45m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,220

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Fri 13/11

09:15-12:30

2 stops35h 15m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,270

PhiladelphiaCairns

PHL Philadelphia - CNS Cairns

PHLCNS

Philadelphia

Sun 31/1

10:41-15:15

3 stops37h 34m

Cairns

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,329

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Mon 30/11

18:30-07:10

2 stops44h 40m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,334

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Fri 13/11

20:45-23:20

1 stop34h 35m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,343

Flights are sorted by cheapest return flights first.

Deals found on 17/9

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-SYD

PHL-BNE

PHL-ADL

PHL-AVV

PHL-MEL

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-ADL

PHL-AVV

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 $1,587). Flying from Philadelphia to Australia in October is currently the most expensive (average of $2,598). 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?
Air Canada, Qatar Airways, and United Airlines can get you from Philadelphia to Australia in just under 33h 35m. Your travel time can differ by up to 11h 18m. 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 $1,587). Flying from Philadelphia to Australia in October is currently the most expensive (average of $2,598). 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 $966

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/2. 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 17 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 17 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 17 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 17 September 2026.

Last-minute flights from Philadelphia to AustraliaDiscover last-minute flight deals from Philadelphia to Australia. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Philadelphia to Australia. Data last updated 17 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 17 September 2026.

Search for one-way flight options from Philadelphia to Australia. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

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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 17 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 17 September 2026.

Last-minute flights from Philadelphia to Australia
Discover last-minute flight deals from Philadelphia to Australia. Data last updated 17 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 17 September 2026.