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$583+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Dec 25 — Jan 11
Thu 12/25
Thu 1/1
1 adult, Economy
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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 November 25, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/93:13 pmPHL - SYD
1 stop25h 47mQantas Airways
Sun 12/142:05 pmSYD - PHL
1 stop22h 03mQantas Airways
Deal found 11/23$1,019
This American Airlines deal was found by Cheapflights users on 11/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/94:04 pmPHL - SYD
2 stops24h 56mAmerican Airlines
Tue 12/1611:20 amSYD - PHL
2 stops24h 30mAmerican Airlines
Deal found 11/24$1,048
This United Airlines deal was found by Cheapflights users on 11/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:15 amPHL - SYD
1 stop33h 00mUnited Airlines
Sun 1/182:00 pmSYD - PHL
1 stop23h 52mUnited Airlines
Deal found 11/25$1,060
This United Airlines deal was found by Cheapflights users on 11/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:17 amPHL - SYD
1 stop32h 03mUnited Airlines
Mon 1/1911:20 amSYD - PHL
2 stops26h 16mUnited Airlines
Deal found 11/25$1,065
This Fareboom deal was found by Cheapflights users on 11/24. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/93:13 pmPHL - SYD
3 stops34h 27mAir Tahiti Nui
Tue 12/168:55 amSYD - PHL
3 stops27h 10mAir Tahiti Nui
Deal found 11/24$1,075
This United Airlines deal was found by Cheapflights users on 11/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:25 pmPHL - SYD
1 stop22h 50mUnited Airlines
Thu 1/1511:50 amSYD - PHL
1 stop20h 46mUnited Airlines
Deal found 11/25$1,135
This Delta deal was found by Cheapflights users on 11/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:47 pmPHL - SYD
2 stops26h 43mDelta
Thu 1/152:15 pmSYD - PHL
2 stops24h 58mDelta
Deal found 11/25$1,140
This United Airlines deal was found by Cheapflights users on 11/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:50 pmPHL - SYD
1 stop45h 10mUnited Airlines
Thu 1/1511:50 amSYD - PHL
1 stop27h 09mUnited Airlines
Deal found 11/25$1,143
This Cheapflightsfares deal was found by Cheapflights users on 11/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/295:12 pmPHL - MEL
2 stops32h 03mQantas Airways
Mon 12/86:45 amMEL - PHL
2 stops26h 33mQantas Airways
Deal found 11/23$1,329
This Cheapflightsfares deal was found by Cheapflights users on 11/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:24 pmPHL - SYD
2 stops35h 26mQantas Airways
Mon 12/87:15 pmSYD - PHL
2 stops37h 27mQantas Airways
Deal found 11/24$1,423
This United Airlines deal was found by Cheapflights users on 11/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:27 amPHL - MEL
2 stops33h 03mUnited Airlines
Wed 12/311:00 pmMEL - PHL
2 stops41h 11mUnited Airlines
Deal found 11/25$1,502
This Cathay Pacific deal was found by Cheapflights users on 11/24. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2512:30 pmPHL - PER
2 stops45h 25mMultiple Airlines
Tue 12/28:30 amPER - PHL
2 stops36h 13mMultiple Airlines
Deal found 11/24$1,768

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 November 25, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$967
(oojo)

One-way from

$583
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,259
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
Search Deals
From Philadelphia to Australia
Search Deals
One-way flight from Philadelphia to Australia
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($258 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 25, 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

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 3/24

6:35 pm-5:10 pm

2 stops32h 35m

Brisbane

Fri 4/10

8:35 pm-7:10 am

1 stop24h 35m

$967

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Mon 2/16

2:14 pm-5:10 pm

2 stops35h 56m

Brisbane

Mon 3/2

7:40 pm-6:55 am

1 stop26h 15m

$967

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/24

6:45 pm-9:00 am

1 stop23h 15m

Sydney Kingsford Smith

Fri 4/10

12:00 pm-6:51 pm

1 stop20h 51m

$1,019

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 12/9

1:15 pm-9:05 am

3 stops27h 50m

Sydney Kingsford Smith

Sun 12/14

2:00 pm-9:10 pm

2 stops23h 10m

$1,065

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 1/19

8:00 am-8:30 am

2 stops32h 30m

Sydney Kingsford Smith

Mon 2/23

2:15 pm-12:26 am

2 stops26h 11m

$1,065

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 12/31

6:17 am-6:20 am

1 stop32h 03m

Sydney Kingsford Smith

Mon 1/19

11:20 am-9:36 pm

2 stops26h 16m

$1,065

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Mon 2/9

3:30 pm-8:45 am

2 stops26h 15m

Brisbane

Sun 2/15

10:45 am-2:47 pm

2 stops43h 02m

$1,121

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 12/31

6:25 pm-9:15 am

1 stop22h 50m

Sydney Kingsford Smith

Fri 1/16

11:50 am-4:36 pm

1 stop20h 46m

$1,135

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 1/24

12:16 pm-8:30 am

2 stops28h 14m

Sydney Kingsford Smith

Mon 2/9

2:15 pm-11:13 pm

2 stops24h 58m

$1,140

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 12/31

1:47 pm-8:30 am

2 stops26h 43m

Sydney Kingsford Smith

Sat 1/17

2:15 pm-11:13 pm

2 stops24h 58m

$1,140

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

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, September is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $168). Flying from Philadelphia to Australia in July is currently the most expensive (average of $886). 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 November 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Philadelphia to Australia in the morning. If you’re flexible enough to do this you can expect to save up to 70% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Philadelphia to Australia?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Australia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to Australia flight should consider departing on Sunday at noon when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 25, 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.
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.0

Overall

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.1
Very good
209 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.0

Overall

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Qantas Airways
7.5
Good
944 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.0

Overall

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
United Airlines
7.4
Good
9,044 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.0

Overall

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
American Airlines
7.2
Good
11,037 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.0

Overall

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Air Canada
7.1
Good
10,475 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Food

7.5

Crew

8.5

Comfort

8.0

Overall

8.1

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

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?

    Qantas Airways, United Airlines, and Delta can get you from Philadelphia to Australia in just under 27h 50m. Your travel time can differ by up to 4h 45m. The distance between Philadelphia and Australia is about 9862 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Philadelphia to Australia one-way?

    For one-way options, check prices for Qantas Airways. According to our data, you can fly for as low as $608. Users have also found prices from $627 and $649 on American Airlines and Air Canada, respectively.

  • 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 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, September is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $168). Flying from Philadelphia to Australia in July is currently the most expensive (average of $886). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$535Average$866FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$859Average$1,596FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$941Average$1,327FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$945Average$1,486FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$1,072Average$1,942FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,220Average$1,548FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,295Average$1,660FlexibilityNo cancel feeOn-time71%
Qatar AirwaysCheapest$1,296Average$1,608FlexibilityNo cancel feeOn-time68%

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