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$426+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

This Expedia deal was found by Cheapflights users on 10/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/293:30 pmPHL - BNE
2 stops50h 15mAir Canada
Sat 12/610:45 amBNE - PHL
2 stops43h 05mAir Canada
Deal found 10/30$769
This United Airlines deal was found by Cheapflights users on 10/28. 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 10/298:15 amPHL - BNE
2 stops32h 15mUnited Airlines
Sat 11/811:40 amBNE - PHL
1 stop20h 40mUnited Airlines
Deal found 10/28$850
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/118:15 amPHL - SYD
2 stops33h 00mUnited Airlines
Tue 11/1811:50 amSYD - PHL
1 stop20h 51mUnited Airlines
Deal found 10/28$851
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/118:15 amPHL - SYD
1 stop30h 45mUnited Airlines
Fri 11/2111:50 amSYD - PHL
1 stop26h 56mUnited Airlines
Deal found 10/27$854
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/253:00 pmPHL - SYD
2 stops26h 15mUnited Airlines
Tue 12/211:50 amSYD - PHL
2 stops40h 17mUnited Airlines
Deal found 10/27$855
This United Airlines deal was found by Cheapflights users on 10/28. 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 10/299:45 amPHL - SYD
2 stops30h 15mUnited Airlines
Mon 11/1011:20 amSYD - PHL
2 stops27h 43mUnited Airlines
Deal found 10/28$856
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sat 11/228:00 pmPHL - SYD
2 stops43h 00mUnited Airlines
Sat 12/611:50 amSYD - PHL
2 stops37h 45mUnited Airlines
Deal found 10/28$859
This Orbitz deal was found by Cheapflights users on 10/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/64:35 pmPHL - BNE
2 stops49h 10mAir Canada
Mon 11/1010:45 amBNE - PHL
2 stops43h 02mAir Canada
Deal found 10/30$999
This Orbitz deal was found by Cheapflights users on 10/29. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:45 amPHL - BNE
2 stops32h 00mAir Canada
Thu 11/610:45 amBNE - PHL
2 stops44h 06mAir Canada
Deal found 10/29$1,005
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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.
Wed 11/263:45 pmPHL - SYD
1 stop25h 15mQantas Airways
Mon 12/152:05 pmSYD - PHL
1 stop24h 36mQantas Airways
Deal found 10/28$1,020
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Sun 12/74:04 pmPHL - SYD
2 stops24h 56mAmerican Airlines
Mon 12/2211:20 amSYD - PHL
1 stop24h 40mAmerican Airlines
Deal found 10/28$1,036
This oojo deal was found by Cheapflights users on 10/28. 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 12/411:45 amPHL - MEL
2 stops35h 50mQantas Airways
Thu 1/2212:00 pmMEL - PHL
1 stop24h 16mQantas Airways
Deal found 10/28$1,043

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$765
(Air Canada)

One-way from

$426
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$1,450
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. 16% potential increase in price ($301 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 30, 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 2/3

3:30 pm-8:45 am

2 stops26h 15m

Brisbane

Sun 2/15

10:45 am-2:47 pm

2 stops43h 02m

$765

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sat 11/29

3:30 pm-8:45 am

2 stops50h 15m

Brisbane

Sat 12/6

10:45 am-2:50 pm

2 stops43h 05m

$769

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 3/24

3:30 pm-7:45 am

2 stops26h 15m

Brisbane

Fri 4/10

10:00 am-2:46 pm

2 stops42h 46m

$772

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sun 3/1

4:35 pm-8:45 am

2 stops49h 10m

Brisbane

Sun 3/22

9:45 am-3:49 pm

2 stops44h 04m

$779

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 2/3

2:30 pm-5:10 pm

3 stops35h 40m

Brisbane

Sun 2/15

8:30 am-7:54 pm

3 stops26h 24m

$795

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 1/20

8:09 am-8:45 am

2 stops57h 36m

Brisbane

Wed 2/4

10:45 am-11:30 pm

2 stops27h 45m

$828

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 3/17

6:16 pm-6:30 am

1 stop22h 14m

Brisbane

Sat 3/21

10:40 am-9:38 pm

1 stop24h 58m

$850

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/31

6:16 pm-7:55 am

1 stop22h 39m

Sydney Kingsford Smith

Wed 4/8

9:30 am-10:41 pm

2 stops27h 11m

$851

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/31

10:00 am-7:55 am

2 stops30h 55m

Sydney Kingsford Smith

Sun 4/12

9:30 am-12:32 am

2 stops29h 02m

$851

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/31

10:00 am-7:55 am

2 stops30h 55m

Sydney Kingsford Smith

Tue 4/7

9:30 am-12:32 am

2 stops29h 02m

$851

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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 October 30, 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 October 30, 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
8.0
Very good
208 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.0
Very good
208 reviews
Fiji Airways
8.0
Very good
208 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Overall

8.0

Boarding

8.1

Crew

8.5

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
925 reviews
Fiji Airways
8.0
Very good
208 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Overall

8.0

Boarding

8.1

Crew

8.5

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
8,998 reviews
Fiji Airways
8.0
Very good
208 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Overall

8.0

Boarding

8.1

Crew

8.5

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
11,030 reviews
Fiji Airways
8.0
Very good
208 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Overall

8.0

Boarding

8.1

Crew

8.5

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
10,377 reviews
Fiji Airways
8.0
Very good
208 reviews

Comfort

8.0

Entertainment

7.5

Food

7.5

Overall

8.0

Boarding

8.1

Crew

8.5

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?

    Air Canada, United Airlines, and American Airlines can get you from Philadelphia to Australia in just under 22h 39m. Your travel time can differ by up to 5h 41m. 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 United Airlines. According to our data, you can fly for as low as $426. Users have also found prices from $598 and $700 on Fiji Airways and Delta, respectively.

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

    The most popular route from Philadelphia to Australia is Philadelphia - Melbourne. You may also consider Philadelphia - Sydney Kingsford Smith 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$535Average$879FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$860Average$1,597FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$941Average$1,314FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$945Average$1,486FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,148Average$1,626FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$1,220Average$1,548FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,296Average$1,694FlexibilityNo cancel feeOn-time68%
Qantas AirwaysCheapest$1,341Average$1,978FlexibilityNo cancel feeOn-time74%

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