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$511+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheap 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 December 17, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:51 amPHL - SYD
1 stop32h 09mUnited Airlines
Mon 1/512:10 pmSYD - PHL
2 stops27h 02mUnited Airlines
Deal found 12/15$1,068
This United Airlines deal was found by Cheapflights users on 12/15. 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 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
Mon 1/512:10 pmSYD - PHL
2 stops27h 02mUnited Airlines
Deal found 12/15$1,076
This United Airlines deal was found by Cheapflights users on 12/15. 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 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 1/1512:10 pmSYD - PHL
1 stop25h 42mUnited Airlines
Deal found 12/15$1,146
This Trip.com deal was found by Cheapflights users on 12/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:10 amPHL - SYD
2 stops34h 15mMultiple Airlines
Tue 12/305:45 pmSYD - PHL
2 stops34h 51mMultiple Airlines
Deal found 12/15$1,723
This oojo deal was found by Cheapflights users on 12/16. 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.
Mon 12/223:40 pmPHL - MEL
1 stop25h 50mQantas Airways
Sun 1/186:55 pmMEL - PHL
2 stops37h 41mQantas Airways
Deal found 12/16$1,890
This oojo deal was found by Cheapflights users on 12/17. 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.
Mon 12/293:41 pmPHL - SYD
1 stop25h 19mQantas Airways
Thu 1/155:50 pmSYD - PHL
2 stops41h 16mQantas Airways
Deal found 12/17$1,897
This Air Canada deal was found by Cheapflights users on 12/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/294:35 pmPHL - SYD
2 stops46h 20mAir Canada
Thu 1/1511:20 amSYD - PHL
3 stops43h 27mAir Canada
Deal found 12/15$1,977
This oojo deal was found by Cheapflights users on 12/16. 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.
Thu 12/257:40 pmPHL - ADL
2 stops47h 45mQatar Airways
Mon 1/1210:00 pmADL - PHL
2 stops38h 04mQatar Airways
Deal found 12/16$2,636
This Gurufare deal was found by Cheapflights users on 12/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/219:45 amPHL - MEL
2 stops31h 40mAir New Zealand
Tue 12/236:50 pmMEL - PHL
2 stops62h 32mAir New Zealand
Deal found 12/17$2,651
This oojo deal was found by Cheapflights users on 12/17. 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.
Thu 12/1810:38 amPHL - PER
2 stops47h 17mCathay Pacific
Wed 12/2412:25 amPER - PHL
2 stops35h 29mCathay Pacific
Deal found 12/17$2,712
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:41 pmPHL - MEL
2 stops44h 49mMultiple Airlines
Sun 1/184:05 pmMEL - PHL
1 stop41h 18mMultiple Airlines
Deal found 12/16$2,762
This Gurufare deal was found by Cheapflights users on 12/15. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:40 pmPHL - MEL
1 stop30h 10mQatar Airways
Sun 1/115:10 pmMEL - PHL
2 stops41h 13mQatar Airways
Deal found 12/15$2,791

Find flight deals from Philadelphia to Australia

Keep the following information in mind while searching for Philadelphia to Australia flight deals. Data was last updated December 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$910
(oojo)

One-way from

$511
(Vliegwinkel)

Popular in

December

Cheapest in

February

Average price

$1,929
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. 11% potential increase in price ($193 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 17, 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

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Fri 2/20

2:23 pm-9:30 am

1 stop27h 07m

Melbourne

Wed 3/4

6:45 am-7:54 pm

2 stops29h 09m

$910

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 1/31

2:30 pm-9:10 am

2 stops50h 40m

Sydney Kingsford Smith

Sat 2/7

11:20 am-7:01 am

1 stop35h 41m

$939

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 2/1

2:30 pm-8:50 pm

2 stops38h 20m

Sydney Kingsford Smith

Sun 2/8

11:20 am-11:48 pm

1 stop28h 28m

$939

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Wed 2/11

2:30 pm-5:15 pm

2 stops34h 45m

Melbourne

Fri 2/20

12:00 pm-11:39 pm

1 stop27h 39m

$976

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/16

2:23 pm-9:00 am

1 stop26h 37m

Sydney Kingsford Smith

Tue 2/24

2:05 pm-2:27 pm

1 stop40h 22m

$1,034

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 12/29

5:50 pm-7:00 am

1 stop45h 10m

Sydney Kingsford Smith

Mon 1/5

12:10 pm-11:12 pm

2 stops27h 02m

$1,076

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/1

4:00 pm-2:25 pm

2 stops30h 25m

Sydney Kingsford Smith

Tue 3/24

11:20 am-11:50 pm

1 stop27h 30m

$1,133

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 1/24

12:23 pm-6:50 am

2 stops26h 27m

Sydney Kingsford Smith

Sun 2/1

10:40 am-12:21 am

2 stops29h 41m

$1,143

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 1/24

10:30 am-6:50 am

2 stops28h 20m

Sydney Kingsford Smith

Mon 2/9

10:40 am-10:50 pm

2 stops28h 10m

$1,143

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 12/29

5:50 pm-7:00 am

1 stop45h 10m

Sydney Kingsford Smith

Thu 1/15

11:20 am-9:36 pm

2 stops26h 16m

$1,151

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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, February is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $154). Flying from Philadelphia to Australia in January is currently the most expensive (average of $949). 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 December 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Philadelphia to Australia in the evening. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight at noon.

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 December 17, 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
210 reviews

Overall

8.1

Boarding

8.2

Crew

8.5

Comfort

8.0

Food

7.5

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
210 reviews
Fiji Airways
8.1
Very good
210 reviews

Overall

8.1

Boarding

8.2

Crew

8.5

Comfort

8.0

Food

7.5

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
946 reviews
Fiji Airways
8.1
Very good
210 reviews

Overall

8.1

Boarding

8.2

Crew

8.5

Comfort

8.0

Food

7.5

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
9,092 reviews
Fiji Airways
8.1
Very good
210 reviews

Overall

8.1

Boarding

8.2

Crew

8.5

Comfort

8.0

Food

7.5

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
11,049 reviews
Fiji Airways
8.1
Very good
210 reviews

Overall

8.1

Boarding

8.2

Crew

8.5

Comfort

8.0

Food

7.5

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
10,531 reviews
Fiji Airways
8.1
Very good
210 reviews

Overall

8.1

Boarding

8.2

Crew

8.5

Comfort

8.0

Food

7.5

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 Air New Zealand can get you from Philadelphia to Australia in just under 27h 07m. Your travel time can differ by up to 18h 03m. The distance between Philadelphia and Australia is about 10283 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 Fiji Airways. According to our data, you can fly for as low as $623. Users have also found prices from $749 and $1,036 on Qantas Airways and American Airlines, 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, February is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $154). Flying from Philadelphia to Australia in January is currently the most expensive (average of $949). 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 December 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$535Average$879FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$859Average$1,503FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$941Average$1,314FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$945Average$1,486FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$1,044Average$1,914FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,220Average$1,548FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,296Average$1,608FlexibilityNo cancel feeOn-time68%
American AirlinesCheapest$1,350Average$1,603FlexibilityNo cancel feeOn-time71%

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