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$512+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Mar 25 — Apr 11
Wed 3/25
Wed 4/1
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 February 23, 2026.

This United Airlines deal was found by Cheapflights users on 2/21. 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.
Sun 3/152:52 pm
PHL
-
MEL
2 stops26h 38m
United Airlines
Sat 3/2110:30 am
MEL
-
PHL
2 stops25h 39m
United Airlines
Deal found 2/21$1,005
This Kiwi.com deal was found by Cheapflights users on 2/21. 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 3/92:18 pm
PHL
-
SYD
1 stop27h 42m
Qantas Airways
Mon 3/2311:20 am
SYD
-
PHL
1 stop23h 22m
Qantas Airways
Deal found 2/21$1,041
This American Airlines deal was found by Cheapflights users on 2/22. 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.
Mon 3/95:17 pm
PHL
-
SYD
2 stops24h 43m
American Airlines
Mon 3/2311:20 am
SYD
-
PHL
2 stops23h 28m
American Airlines
Deal found 2/22$1,044
This FlightHub deal was found by Cheapflights users on 2/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/87:00 pm
PHL
-
SYD
1 stop23h 00m
Qantas Airways
Wed 3/1811:20 am
SYD
-
PHL
1 stop23h 22m
Qantas Airways
Deal found 2/21$1,050
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Sun 3/811:40 am
PHL
-
MEL
2 stops29h 50m
United Airlines
Tue 3/2410:30 am
MEL
-
PHL
2 stops25h 39m
United Airlines
Deal found 2/20$1,051
This American Airlines deal was found by Cheapflights users on 2/21. 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 3/85:17 pm
PHL
-
SYD
2 stops24h 43m
American Airlines
Wed 3/1811:20 am
SYD
-
PHL
2 stops23h 26m
American Airlines
Deal found 2/21$1,057
This oojo deal was found by Cheapflights users on 2/20. 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 3/167:00 pm
PHL
-
SYD
1 stop23h 00m
Qantas Airways
Mon 3/3010:10 am
SYD
-
PHL
1 stop34h 41m
Qantas Airways
Deal found 2/20$1,067
This United Airlines deal was found by Cheapflights users on 2/22. 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.
Sun 3/812:45 pm
PHL
-
SYD
1 stop27h 15m
United Airlines
Wed 3/1811:50 am
SYD
-
PHL
1 stop21h 03m
United Airlines
Deal found 2/22$1,070
This United Airlines deal was found by Cheapflights users on 2/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/194:14 pm
PHL
-
SYD
2 stops24h 46m
United Airlines
Fri 7/310:20 am
SYD
-
PHL
2 stops38h 06m
United Airlines
Deal found 2/23$1,073
This United Airlines deal was found by Cheapflights users on 2/20. 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 3/75:10 pm
PHL
-
BNE
2 stops46h 20m
United Airlines
Mon 3/1610:40 am
BNE
-
PHL
3 stops44h 34m
United Airlines
Deal found 2/20$1,090
This oojo deal was found by Cheapflights users on 2/20. 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.
Sat 3/75:05 pm
PHL
-
BNE
2 stops47h 25m
Qantas Airways
Mon 3/167:40 pm
BNE
-
PHL
1 stop24h 11m
Qantas Airways
Deal found 2/20$1,106
This Gurufare deal was found by Cheapflights users on 2/20. 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 3/247:00 pm
PHL
-
SYD
1 stop23h 00m
Qantas Airways
Fri 4/105:50 pm
SYD
-
PHL
1 stop26h 02m
Qantas Airways
Deal found 2/20$1,123

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 February 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,005
(United Airlines)

One-way from

$512
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,071
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. 12% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 23, 2026.
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

Sun 3/8

11:40 am-8:30 am

2 stops29h 50m

Melbourne

Tue 3/24

12:00 pm-9:31 pm

1 stop24h 31m

$1,051

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/8

12:45 pm-7:00 am

1 stop27h 15m

Sydney Kingsford Smith

Wed 3/18

11:50 am-5:53 pm

1 stop21h 03m

$1,070

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sat 3/7

5:10 pm-6:30 am

2 stops46h 20m

Brisbane

Mon 3/16

10:40 am-5:14 pm

3 stops44h 34m

$1,090

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sat 3/7

5:05 pm-7:30 am

2 stops47h 25m

Brisbane

Mon 3/16

7:40 pm-5:51 am

1 stop24h 11m

$1,106

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 3/13

10:35 am-8:05 am

2 stops30h 30m

Sydney Kingsford Smith

Sun 3/22

11:50 am-11:45 am

1 stop38h 55m

$1,158

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 3/14

6:20 pm-6:20 am

1 stop45h 00m

Sydney Kingsford Smith

Sat 3/21

11:50 am-9:09 pm

2 stops24h 19m

$1,161

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Sat 3/14

6:20 pm-9:00 am

1 stop23h 40m

Melbourne

Sat 3/21

10:30 am-11:32 pm

2 stops28h 02m

$1,213

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Thu 3/12

6:20 pm-9:00 am

1 stop23h 40m

Melbourne

Thu 3/19

10:30 am-12:16 am

2 stops28h 46m

$1,217

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 3/20

6:20 pm-9:15 am

1 stop23h 55m

Sydney Kingsford Smith

Fri 3/27

12:10 pm-9:31 pm

1 stop24h 21m

$1,220

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Wed 3/25

2:00 pm-9:50 pm

2 stops41h 50m

Brisbane

Wed 4/1

7:15 am-5:51 am

2 stops36h 36m

$1,289

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

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 $166). Flying from Philadelphia to Australia in January is currently the most expensive (average of $975). 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.

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 February 23, 2026.
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
226 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Fiji Airways
8.0
Very good
226 reviews
Fiji Airways
8.0
Very good
226 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Qantas Airways
7.5
Good
996 reviews
Fiji Airways
8.0
Very good
226 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
United Airlines
7.4
Good
9,342 reviews
Fiji Airways
8.0
Very good
226 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
American Airlines
7.2
Good
11,341 reviews
Fiji Airways
8.0
Very good
226 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Air Canada
7.1
Good
10,739 reviews
Fiji Airways
8.0
Very good
226 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍

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?

    United Airlines, Qantas Airways, and Air New Zealand can get you from Philadelphia to Australia in just under 29h 50m. Your travel time can differ by up to 17h 35m. 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 Qantas Airways. According to our data, you can fly for as low as $628. Users have also found prices from $668 and $772 on Fiji 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 - 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 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 $166). Flying from Philadelphia to Australia in January is currently the most expensive (average of $975). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$535Average$879FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$539Average$1,593FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$765Average$1,379FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$945Average$1,802FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$954Average$1,514FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,198Average$1,661FlexibilityNo cancel feeOn-time71%
Qatar AirwaysCheapest$1,298Average$1,608FlexibilityNo cancel feeOn-time68%
Air New ZealandCheapest$1,418Average$1,548FlexibilityNo cancel feeOn-time78%

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