Australia

$651+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
May 30 — Jun 61
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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 April 30, 2026.

This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:15 am
PHL
-
SYD
2 stops35h 35m
Delta
Mon 7/139:15 am
SYD
-
PHL
2 stops34h 14m
Delta
Deal found 4/30$1,257
This Justfly.com deal was found by Cheapflights users on 4/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:50 pm
PHL
-
SYD
1 stop31h 00m
Qatar Airways
Wed 11/189:40 pm
SYD
-
PHL
1 stop51h 20m
Qatar Airways
Deal found 4/30$1,273
This oojo deal was found by Cheapflights users on 4/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:46 am
PHL
-
SYD
1 stop28h 09m
Qantas Airways
Wed 11/186:00 am
SYD
-
PHL
2 stops24h 37m
Qantas Airways
Deal found 4/27$1,289
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2012:07 pm
PHL
-
MEL
2 stops29h 43m
Delta
Wed 6/310:00 am
MEL
-
PHL
2 stops23h 27m
Delta
Deal found 4/29$1,297
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:28 am
PHL
-
SYD
2 stops29h 22m
Delta
Mon 6/89:15 am
SYD
-
PHL
2 stops24h 05m
Delta
Deal found 4/29$1,297
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/198:05 am
PHL
-
SYD
2 stops32h 45m
Delta
Wed 7/89:15 am
SYD
-
PHL
2 stops34h 14m
Delta
Deal found 4/29$1,307
This Justfly.com deal was found by Cheapflights users on 4/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:50 pm
PHL
-
SYD
1 stop31h 00m
Qatar Airways
Sun 11/159:40 pm
SYD
-
PHL
1 stop51h 20m
Qatar Airways
Deal found 4/30$1,313
This Jetabroad deal was found by Cheapflights users on 4/29. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:39 pm
PHL
-
MEL
2 stops35h 41m
Multiple Airlines
Sat 7/257:30 am
MEL
-
PHL
2 stops29h 27m
Multiple Airlines
Deal found 4/29$1,315
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:05 pm
PHL
-
SYD
2 stops24h 45m
Delta
Sun 10/410:15 am
SYD
-
PHL
2 stops23h 12m
Delta
Deal found 4/29$1,317
This oojo deal was found by Cheapflights users on 4/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/33:13 pm
PHL
-
SYD
2 stops27h 42m
Qantas Airways
Sun 12/139:25 pm
SYD
-
PHL
1 stop24h 29m
Qantas Airways
Deal found 4/27$1,331
This oojo deal was found by Cheapflights users on 4/26. 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 11/143:55 pm
PHL
-
BNE
1 stop22h 55m
Qantas Airways
Sat 12/56:40 pm
BNE
-
PHL
2 stops40h 28m
Qantas Airways
Deal found 4/26$1,335
This oojo deal was found by Cheapflights users on 4/26. 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.
Sun 11/11:00 pm
PHL
-
MEL
1 stop24h 00m
Qantas Airways
Sun 11/156:00 am
MEL
-
PHL
2 stops24h 37m
Qantas Airways
Deal found 4/26$1,335

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 April 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,257
(Delta)

One-way from

$651
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,385
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
From Philadelphia to Australia
One-way flight from Philadelphia to Australia
Highest demand for flights based on searches. 11% potential increase in price ($198 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($47 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 April 30, 2026.
Use the filters below to find and compare flights from Philadelphia to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 10/10

7:05 am-7:50 am

2 stops33h 45m

Sydney Kingsford Smith

Sun 10/18

10:15 am-11:40 pm

2 stops28h 25m

$1,307

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 9/25

4:05 pm-6:50 am

2 stops24h 45m

Sydney Kingsford Smith

Sun 10/4

10:15 am-6:27 pm

2 stops23h 12m

$1,317

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Wed 5/20

12:17 pm-12:05 pm

3 stops33h 48m

Melbourne

Wed 6/3

1:25 pm-5:37 am

3 stops30h 12m

$1,337
Quickest round-trip

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Wed 5/13

5:37 pm-5:00 am

1 stop21h 23m

Brisbane

Sun 5/24

8:35 pm-7:00 am

1 stop24h 25m

$1,357

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Wed 6/10

4:22 pm-9:20 am

2 stops26h 58m

Brisbane

Wed 6/17

8:35 pm-7:05 am

1 stop24h 30m

$1,406

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 9/14

5:43 pm-7:05 am

1 stop23h 22m

Sydney Kingsford Smith

Sun 9/27

9:10 am-6:34 pm

1 stop23h 24m

$1,458

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 9/14

2:12 pm-6:50 am

2 stops26h 38m

Sydney Kingsford Smith

Sun 9/27

9:15 am-11:40 pm

2 stops28h 25m

$1,464

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 9/14

8:30 pm-9:20 pm

2 stops34h 50m

Sydney Kingsford Smith

Mon 9/21

8:50 am-9:00 am

3 stops38h 10m

$1,514

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 5/15

6:35 am-6:50 am

2 stops34h 15m

Sydney Kingsford Smith

Sun 5/24

9:15 am-11:12 pm

2 stops27h 57m

$1,514

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 5/19

6:12 am-6:50 am

2 stops34h 38m

Sydney Kingsford Smith

Sat 7/4

9:15 am-11:02 am

2 stops39h 47m

$1,514

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 56 resultsSorted by cheapest first
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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

How far ahead should I book a flight from Philadelphia to Australia?

The price you pay for your flight from Philadelphia to Australia may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $250). Flying from Philadelphia to Australia in October is currently the most expensive (average of $1,066). 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 April 30, 2026.
See what other customers who have flown with Fiji Airways,Qantas Airways, andUnited 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.

Boarding

8.2

Crew

8.6

Entertainment

7.5

Food

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Boarding

8.2

Crew

8.6

Entertainment

7.5

Food

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Boarding

8.2

Crew

8.6

Entertainment

7.5

Food

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Boarding

8.2

Crew

8.6

Entertainment

7.5

Food

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Boarding

8.2

Crew

8.6

Entertainment

7.5

Food

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

Boarding

8.2

Crew

8.6

Entertainment

7.5

Food

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

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?

    Delta, Qantas Airways, and Qatar Airways can get you from Philadelphia to Australia in just under 21h 23m. Your travel time can differ by up to 22h 32m. The distance between Philadelphia and Australia is about 9555 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?

  • 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, August is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $250). Flying from Philadelphia to Australia in October is currently the most expensive (average of $1,066). 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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Top 7 airlines flying from Philadelphia to Australia

Discover the top 7 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 April 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$539Average$1,823FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$765Average$1,489FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$945Average$1,697FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$954Average$1,494FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,198Average$1,607FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$1,418Average$1,548FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,447Average$2,010FlexibilityNo cancel feeOn-time68%

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