Australia

$627+ Cheap flights from Philadelphia (PHL) to Australia

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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
oct. 16 — oct. 231
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Cheap flight deals from Philadelphia to Australia

Keep the following information in mind while searching for Philadelphia to Australia flight deals. Data was last updated septiembre 16, 2025.

Round-trip from

$1,142
(Mytrip)

One-way from

$627
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,074
From Philadelphia to Australia
One-way flight from Philadelphia to Australia
Highest demand for flights based on searches. 16% potential increase in price ($301 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($50 potential savings vs. average RT price).
Average for round-trip flights in September 2025

Find flight deals from Philadelphia to Australia

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 septiembre 16, 2025.

This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/3010:54 amPHL - SYD
3 stops35h 06mMultiple Airlines
jue. 11/62:00 pmSYD - PHL
3 stops35h 46mMultiple Airlines
Deal found 9/15$1,142
This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/206:44 pmPHL - MEL
2 stops34h 36mMultiple Airlines
sáb. 10/47:30 amMEL - PHL
2 stops30h 14mMultiple Airlines
Deal found 9/15$1,182
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/147:06 amPHL - SYD
2 stops44h 39mAlaska Airlines
mié. 1/79:40 pmSYD - PHL
2 stops35h 51mAlaska Airlines
Deal found 9/15$1,205
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/117:06 amPHL - SYD
2 stops44h 39mAlaska Airlines
jue. 1/89:40 pmSYD - PHL
2 stops35h 51mAlaska Airlines
Deal found 9/16$1,206
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/137:06 amPHL - SYD
2 stops68h 39mAlaska Airlines
mié. 1/79:40 pmSYD - PHL
2 stops35h 51mAlaska Airlines
Deal found 9/16$1,207
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/135:50 pmPHL - SYD
2 stops48h 10mMultiple Airlines
lun. 10/206:45 pmSYD - PHL
1 stop27h 17mMultiple Airlines
Deal found 9/13$1,233
This BYOjet deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/315:20 pmPHL - SYD
2 stops28h 10mFiji Airways
vie. 11/72:00 pmSYD - PHL
2 stops25h 46mFiji Airways
Deal found 9/16$1,243
This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1110:27 amPHL - SYD
2 stops43h 23mFiji Airways
mar. 11/182:10 pmSYD - PHL
2 stops23h 30mFiji Airways
Deal found 9/14$1,252
This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/113:55 pmPHL - SYD
1 stop25h 05mQantas Airways
mar. 11/186:20 amSYD - PHL
2 stops30h 10mQantas Airways
Deal found 9/14$1,254
This oojo deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/410:27 amPHL - SYD
2 stops34h 03mFiji Airways
jue. 11/136:00 amSYD - PHL
2 stops31h 35mFiji Airways
Deal found 9/16$1,257
This oojo deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/306:44 pmPHL - SYD
2 stops37h 26mFiji Airways
mar. 10/286:00 amSYD - PHL
2 stops31h 59mFiji Airways
Deal found 9/16$1,265
This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/306:43 pmPHL - MEL
2 stops33h 02mMultiple Airlines
jue. 11/67:00 amMEL - PHL
2 stops30h 35mMultiple Airlines
Deal found 9/15$1,276

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
Use the filters below to find and compare flights from Philadelphia to Australia that are best for you.

Fly from

Philadelphia

Fly to

Australia

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

sáb. 1/31

6:35 pm-7:45 pm

2 stops57h 10m

Sydney Kingsford Smith

vie. 2/27

9:40 pm-5:31 pm

2 stops35h 51m

$1,180

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

jue. 2/5

6:35 pm-7:45 pm

2 stops33h 10m

Sydney Kingsford Smith

dom. 3/1

9:40 pm-5:31 pm

2 stops35h 51m

$1,183

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

mar. 2/3

6:35 pm-7:45 pm

2 stops33h 10m

Sydney Kingsford Smith

sáb. 2/28

9:40 pm-5:31 pm

2 stops35h 51m

$1,192

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

sáb. 12/13

7:06 am-7:45 pm

2 stops68h 39m

Sydney Kingsford Smith

mié. 1/7

9:40 pm-5:31 pm

2 stops35h 51m

$1,207

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

sáb. 12/13

7:06 am-7:45 pm

2 stops68h 39m

Sydney Kingsford Smith

jue. 1/8

9:40 pm-5:31 pm

2 stops35h 51m

$1,207

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

jue. 2/5

6:35 pm-7:45 pm

2 stops33h 10m

Sydney Kingsford Smith

sáb. 2/28

9:40 pm-5:31 pm

2 stops35h 51m

$1,211

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

vie. 2/6

6:35 pm-7:45 pm

2 stops33h 10m

Sydney Kingsford Smith

sáb. 2/28

9:40 pm-5:31 pm

2 stops35h 51m

$1,211

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

dom. 2/1

6:35 pm-7:45 pm

2 stops33h 10m

Sydney Kingsford Smith

sáb. 2/28

9:40 pm-5:31 pm

2 stops35h 51m

$1,220

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 2/16

5:05 pm-9:00 am

1 stop23h 55m

Sydney Kingsford Smith

mar. 2/24

6:20 am-9:09 pm

2 stops30h 49m

$1,254

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

sáb. 1/31

5:17 pm-12:30 pm

2 stops27h 13m

Sydney Kingsford Smith

mar. 2/24

6:00 am-9:09 pm

2 stops31h 09m

$1,260

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 results
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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.
Estimated round-trip 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

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

Currently, March is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $1,032). Flying from Philadelphia to Australia in December is currently the most expensive (average of $1,627). 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.

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

Find hourly flight availability from Philadelphia to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to Australia as you normally would.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated septiembre 16, 2025.
See what other customers who have flown with Fiji Airways, Qantas Airways, and United Airlines from Philadelphia to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.4

Boarding

8.1

Comfort

8.0

Crew

8.5

Overall

8.0

Food

7.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Entertainment

7.4

Boarding

8.1

Comfort

8.0

Crew

8.5

Overall

8.0

Food

7.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Entertainment

7.4

Boarding

8.1

Comfort

8.0

Crew

8.5

Overall

8.0

Food

7.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Entertainment

7.4

Boarding

8.1

Comfort

8.0

Crew

8.5

Overall

8.0

Food

7.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Entertainment

7.4

Boarding

8.1

Comfort

8.0

Crew

8.5

Overall

8.0

Food

7.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Entertainment

7.4

Boarding

8.1

Comfort

8.0

Crew

8.5

Overall

8.0

Food

7.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Philadelphia to Australia?

    Most people fly from Philadelphia (PHL) if they book a flight from Philadelphia to Australia. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • How long is the flight from Philadelphia to Australia?

    Alaska Airlines, Qatar Airways, and Fiji Airways can get you from Philadelphia to Australia in just under 26h 52m. Your travel time can differ by up to 30h 18m. The distance between Philadelphia and Australia is about 9512 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Philadelphia to Australia?

  • 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 vacation 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, March is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $1,032). Flying from Philadelphia to Australia in December is currently the most expensive (average of $1,627). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Philadelphia to Australia

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

Top 8 airlines flying from Philadelphia to Australia

Discover the top 8 airlines that operate flights from Philadelphia to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$717Average$1,014FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$860Average$1,508FlexibilityNo cancel feeOn-time69%
Fiji AirwaysCheapest$945Average$1,477FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$945Average$1,336FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,147Average$1,750FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$1,220Average$1,548FlexibilityNo cancel feeOn-time78%
Qantas AirwaysCheapest$1,294Average$2,030FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,296Average$1,633FlexibilityNo cancel feeOn-time68%

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