How long is the flight from Philadelphia to Australia?

Qantas Airways, United Airlines, and Qatar Airways can get you from Philadelphia to Australia in just under 22h 20m. Your travel time can differ by up to 23h 19m. 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 - Brisbane.

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.

$1,099+ 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 9 November 2026.

Wed 2/1214:46 -

1 stop24h 44m

Wed 9/1209:40 -

1 stop20h 12m

Deal found 6/11$1,852

Mon 14/1215:55 -

2 stops34h 05m

Tue 12/112:00 -

1 stop20h 41m

Deal found 6/11$1,865

Sun 13/1210:42 -

1 stop26h 18m

Wed 13/106:00 -

2 stops25h 15m

Deal found 9/11$1,882

Wed 2/1214:39 -

2 stops24h 51m

Wed 9/1209:40 -

2 stops23h 15m

Deal found 5/11$1,897

Sun 6/1215:55 -

2 stops27h 10m

Wed 16/1214:05 -

1 stop23h 06m

Deal found 4/11$1,943

Tue 8/1214:46 -

1 stop24h 09m

Tue 15/1211:05 -

2 stops25h 30m

Deal found 8/11$1,955

Thu 24/1215:36 -

2 stops27h 24m

Mon 11/114:05 -

1 stop24h 32m

Deal found 5/11$1,974

Tue 22/1215:45 -

2 stops26h 35m

Tue 29/1221:00 -

1 stop25h 34m

Deal found 7/11$1,988

Tue 15/1212:34 -

1 stop26h 21m

Wed 23/1211:05 -

2 stops23h 40m

Deal found 6/11$2,003

Tue 15/1214:46 -

1 stop24h 09m

Wed 23/1221:50 -

2 stops36h 55m

Deal found 5/11$2,019

Sat 12/1216:21 -

1 stop22h 34m

Wed 23/1221:50 -

2 stops36h 55m

Deal found 5/11$2,023

Mon 14/1208:00 -

2 stops32h 55m

Tue 12/110:20 -

2 stops28h 39m

Deal found 6/11$2,025

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 9 November 2026.

Sun 13/1210:42 -

1 stop26h 18m

Wed 13/106:00 -

2 stops25h 15m

Deal found 4/11$1,903

Wed 17/216:05 -

1 stop22h 20m

Wed 24/207:20 -

2 stops26h 29m

Deal found 6/11$1,920

Fri 25/1206:24 -

2 stops34h 06m

Tue 12/119:50 -

2 stops42h 09m

Deal found 7/11$2,073

Thu 21/120:45 -

1 stop41h 00m

Thu 11/219:00 -

2 stops35h 50m

Deal found 9/11$2,105

Sat 5/1219:11 -

2 stops45h 19m

Sat 12/609:15 -

2 stops29h 36m

Deal found 6/11$2,114

Mon 7/1212:09 -

2 stops28h 21m

Sat 12/609:15 -

2 stops37h 26m

Deal found 6/11$2,114

Fri 22/112:43 -

2 stops27h 52m

Wed 10/214:05 -

3 stops36h 05m

Deal found 4/11$2,150

Wed 23/1218:51 -

2 stops45h 39m

Mon 11/111:20 -

2 stops39h 44m

Deal found 7/11$2,153

Sat 23/120:45 -

1 stop41h 00m

Sat 6/217:00 -

2 stops37h 50m

Deal found 7/11$2,195

Sun 28/309:15 -

3 stops35h 25m

Thu 1/406:00 -

3 stops30h 43m

Deal found 5/11$4,703

Mon 7/1215:55 -

1 stop25h 05m

Sat 12/609:10 -

1 stop25h 28m

Deal found 6/11$2,396

Thu 28/109:55 -

3 stops32h 40m

Wed 10/214:05 -

3 stops36h 05m

Deal found 8/11$2,223

Mon 3/521:30 -

1 stop29h 20m

Fri 7/516:10 -

1 stop36h 55m

Deal found 6/11$2,229

Mon 1/309:39 -

3 stops31h 51m

Mon 15/310:30 -

2 stops29h 29m

Deal found 5/11$2,267

Thu 25/314:12 -

2 stops25h 48m

Sun 4/410:00 -

2 stops24h 37m

Deal found 6/11$2,332

Wed 24/321:45 -

2 stops32h 10m

Sat 3/421:55 -

2 stops36h 07m

Deal found 8/11$2,287

Mon 22/308:25 -

2 stops31h 55m

Fri 9/409:15 -

2 stops37h 26m

Deal found 7/11$2,332

Tue 26/109:00 -

2 stops33h 35m

Mon 8/211:50 -

3 stops40h 14m

Deal found 7/11$2,341

Sun 13/1212:34 -

2 stops32h 01m

Wed 13/110:20 -

2 stops26h 16m

Deal found 4/11$2,607

Thu 3/1221:00 -

2 stops58h 20m

Mon 14/1216:10 -

1 stop38h 40m

Deal found 4/11$2,349

Fri 25/1206:24 -

2 stops34h 06m

Wed 6/111:20 -

2 stops51h 17m

Deal found 7/11$2,600

Mon 5/410:10 -

3 stops34h 30m

Mon 19/411:55 -

3 stops36h 32m

Deal found 7/11$2,414

Thu 28/109:55 -

3 stops33h 05m

Wed 10/211:15 -

3 stops40h 03m

Deal found 8/11$2,418

Thu 24/1209:50 -

2 stops30h 40m

Sun 3/111:20 -

2 stops50h 39m

Deal found 8/11$2,673

Mon 30/1120:45 -

2 stops32h 55m

Sat 12/1216:10 -

1 stop38h 40m

Deal found 5/11$2,460

Wed 17/209:39 -

3 stops30h 56m

Wed 24/211:50 -

3 stops40h 28m

Deal found 5/11$2,421

Wed 3/214:29 -

1 stop24h 21m

Sun 7/218:30 -

2 stops35h 45m

Deal found 5/11$3,256

Mon 30/1109:45 -

3 stops36h 35m

Mon 7/1207:20 -

2 stops25h 01m

Deal found 5/11$2,721

Sun 28/321:55 -

2 stops46h 30m

Thu 1/416:25 -

2 stops36h 40m

Deal found 6/11$2,518

Wed 3/220:45 -

1 stop29h 45m

Sun 7/215:10 -

1 stop38h 40m

Deal found 4/11$2,526

Find flight deals from Philadelphia to Australia

Round-trip from	$1,805
One-way from	$1,099
Popular in	April
Cheapest in	March
Average price	$2,130

Qatar Airways
1/3-15/3
2 total stops
67h 45m total
Philadelphia to Australia

Search Deals

25/11-31/12
2 total stops
40h 30m total
Philadelphia to Australia

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($103 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($110 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 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

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 17/11

06:00-06:25

2 stops32h 25m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,106

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sat 5/12

07:15-20:15

3 stops45h 00m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,138

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Thu 25/3

10:41-09:30

2 stops31h 49m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,223

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 16/11

15:55-20:50

2 stops36h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,240

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sat 12/12

08:40-22:05

3 stops45h 25m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,246

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Sun 24/1

12:43-10:55

2 stops30h 12m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,521

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Thu 14/1

17:38-21:30

3 stops59h 52m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,584

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Wed 24/3

16:00-09:30

1 stop26h 30m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,630

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Sat 27/3

17:23-09:30

1 stop25h 07m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,740

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Fri 8/1

08:00-21:30

3 stops45h 30m

Melbourne

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,764

Flights are sorted by cheapest return flights first.

Deals found on 7/11

Showing 1-10 of 50 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-MEL

PHL-SYD

PHL-BNE

PHL-OOL

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-MEL

PHL-SYD

PHL-BNE

PHL-OOL

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 $1,841). Flying from Philadelphia to Australia in April is currently the most expensive (average of $2,958). 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 4 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.

Reviews of airlines servicing Australia

Check out reviews from past customers who have flown with Qantas Airways from Philadelphia to Australia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Qantas Airways

7.5

Good

1,123 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jodie,Oct 2026

SYD - GFF

Pretty good but it was delayed by almost an hour

Qantas Airways

7.5

Good

1,123 reviews

Qantas Airways

7.5

Good

1,123 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jodie,Oct 2026

SYD - GFF

Pretty good but it was delayed by almost an hour

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?
Qantas Airways, United Airlines, and Qatar Airways can get you from Philadelphia to Australia in just under 22h 20m. Your travel time can differ by up to 23h 19m. 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 - Brisbane.
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 $1,841). Flying from Philadelphia to Australia in April is currently the most expensive (average of $2,958). 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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Alternative routes for Philadelphia to Australia

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Top airline flying from Philadelphia to Australia

Airline	Cheapest	Average	Flexibility	On-time
Qantas Airways	Cheapest$1,995	Average$2,030	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

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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.

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Cheap flights from Philadelphia to Australia from $1,099

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/11. 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 9 November 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 9 November 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 9 November 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 9 November 2026.

Last-minute flights from Philadelphia to AustraliaDiscover last-minute flight deals from Philadelphia to Australia. Data last updated 9 November 2026 and is based on user searches.

Discover last-minute flight deals from Philadelphia to Australia. Data last updated 9 November 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 9 November 2026.

Search for one-way flight options from Philadelphia to Australia. Find affordable one-way fares based on user searches. Data last updated 9 November 2026.

Find flight deals from Philadelphia to Australia

Round-trip from

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Cheapest in

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Cheapflights Fare Finder

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 4 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.

Reviews of airlines servicing Australia

Check out reviews from past customers who have flown with Qantas Airways from Philadelphia to Australia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Australia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Philadelphia to Australia by cabin class

Find flights from Philadelphia to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Philadelphia and Australia flights

Browse other Philadelphia and Australia flight options. Last updated on 9 November 2026.

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Philadelphia to 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 9 November 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 9 November 2026.

Last-minute flights from Philadelphia to Australia
Discover last-minute flight deals from Philadelphia to Australia. Data last updated 9 November 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 9 November 2026.