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Cheap flights from Philadelphia to Australia from $735

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
9 Apr — 16 Apr1
1 adult

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 4 April 2025.

Round-trip from

$1,521

One-way from

$735

Popular in

December

Cheapest in

August

Average price

$2,333
Air Canada
  • Air Canada
  • 4/6-11/6
  • 4 total stops
  • 70h 30m total
  • Philadelphia to Australia
Search Deals
1/5
  • 1/5
  • 2 total stops
  • 29h 20m total
  • Philadelphia to Australia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($591 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($136 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 4 April 2025.

Wed 4/615:20PHL - SYD
2 stops26h 00mAir Canada
Wed 11/609:20SYD - PHL
2 stops38h 55mAir Canada
Deal found 4/4$1,521
Sat 3/513:29PHL - MEL
3 stops32h 46mMultiple Airlines
Sat 10/512:55MEL - PHL
3 stops31h 06mMultiple Airlines
Deal found 3/4$1,566
Wed 30/412:50PHL - SYD
2 stops28h 30mMultiple Airlines
Sun 18/509:20SYD - PHL
2 stops43h 16mMultiple Airlines
Deal found 3/4$1,676
Thu 1/505:15PHL - CNS
3 stops40h 10mMultiple Airlines
Thu 8/512:25CNS - PHL
2 stops32h 05mMultiple Airlines
Deal found 3/4$1,730
Sat 3/518:35PHL - SYD
2 stops27h 10mFiji Airways
Sat 10/506:00SYD - PHL
2 stops30h 50mFiji Airways
Deal found 3/4$1,923
Tue 29/416:25PHL - BNE
2 stops48h 40mAir Canada
Sun 18/510:00BNE - PHL
2 stops42h 36mAir Canada
Deal found 3/4$1,952
Thu 28/818:58PHL - SYD
2 stops34h 47mAlaska Airlines
Sat 6/920:25SYD - PHL
2 stops47h 20mAlaska Airlines
Deal found 3/4$2,080
Sat 10/518:47PHL - BNE
2 stops25h 48mFiji Airways
Sat 17/511:45BNE - PHL
2 stops25h 05mFiji Airways
Deal found 3/4$2,159
Sat 10/507:45PHL - BNE
2 stops33h 20mMultiple Airlines
Sat 17/511:45BNE - PHL
3 stops32h 16mMultiple Airlines
Deal found 3/4$2,292
Sun 13/420:40PHL - PER
1 stop34h 00mQatar Airways
Mon 28/422:45PER - PHL
1 stop46h 30mQatar Airways
Deal found 3/4$2,410
Wed 4/618:05PHL - SYD
1 stop22h 50mAir New Zealand
Wed 11/608:45SYD - PHL
2 stops35h 12mAir New Zealand
Deal found 3/4$2,474
Fri 18/416:10PHL - MEL
2 stops29h 20mFiji Airways
Sat 3/512:55MEL - PHL
2 stops24h 01mFiji Airways
Deal found 3/4$2,482

Cheapflights Fare Finder

Customise 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 647,157 searches. Data last updated 4 April 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

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 4/6

09:45-07:20

2 stops31h 35m

Sydney Kingsford Smith

Wed 11/6

09:20-10:15

2 stops38h 55m

$1,521

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Sat 3/5

13:29-12:15

3 stops32h 46m

Melbourne

Sat 10/5

12:55-06:01

3 stops31h 06m

$1,566

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 30/4

12:50-07:20

2 stops28h 30m

Sydney Kingsford Smith

Sun 18/5

09:20-14:36

2 stops43h 16m

$1,676

PhiladelphiaCairns

PHL - CNS

PHLCNS

Philadelphia

Thu 1/5

05:15-11:25

3 stops40h 10m

Cairns

Thu 8/5

12:25-06:30

2 stops32h 05m

$1,730

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 3/5

18:35-11:45

2 stops27h 10m

Sydney Kingsford Smith

Sat 10/5

06:00-22:50

2 stops30h 50m

$1,923

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 29/4

16:25-07:05

2 stops48h 40m

Brisbane

Sun 18/5

10:00-14:36

2 stops42h 36m

$1,952

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 28/8

18:58-19:45

2 stops34h 47m

Sydney Kingsford Smith

Sat 6/9

20:25-05:45

2 stops47h 20m

$2,080

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sat 10/5

18:47-10:35

2 stops25h 48m

Brisbane

Sat 17/5

11:45-22:50

2 stops25h 05m

$2,159

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sat 10/5

07:45-07:05

2 stops33h 20m

Brisbane

Sat 17/5

11:45-06:01

3 stops32h 16m

$2,292

PhiladelphiaPerth

PHL - PER

PHLPER

Philadelphia

Sun 13/4

20:40-18:40

1 stop34h 00m

Perth

Mon 28/4

22:45-09:15

1 stop46h 30m

$2,410

Flights are sorted by cheapest return flights first.

Deals found on 3/4

Showing 1-10 of 48 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 return 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, May is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $129). Flying from Philadelphia to Australia in October is currently the most expensive (average of $171). 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 4 April 2025.

When flying from Philadelphia to Australia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Australia ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Australia when rainfall is around 50.0 mm.

Temperature in Australia by month

Plan your trip to Australia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 4 April 2025.
To help decide which airline to fly from Philadelphia to Australia, see what other customers have to say about Air Tahiti Nui, Japan Airlines and Alaska Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Overall

8.7

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very Good
61 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Overall

8.7

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Japan Airlines
8.3
Very Good
1,441 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Overall

8.7

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Alaska Airlines
8.0
Very Good
9,835 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Overall

8.7

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Fiji Airways
8.0
Very Good
180 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Overall

8.7

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Emirates
8.0
Very Good
3,193 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

9.1

Entertainment

7.2

Boarding

8.7

Overall

8.7

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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?

    Philadelphia (PHL) is the airport you will fly out of if you book a flight from Philadelphia to Australia. It is only a 11.2 km journey to Philadelphia (PHL) from Philadelphia’s city centre.

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $962. However, be on the lookout for offers from Qantas Airways and American Airlines, as they are both options that can get you from Philadelphia to Australia for a low price.

  • 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 - Brisbane or Philadelphia - Melbourne.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $129). Flying from Philadelphia to Australia in October is currently the most expensive (average of $171). 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

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Top airline flying from Philadelphia to Australia

Discover the top airline 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 647,157 searches. Data last updated 4 April 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,359Average$1,696FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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How does Cheapflights help users find flights from Philadelphia to Australia?

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Can Cheapflights find flights from Philadelphia to Australia with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Philadelphia to Australia flexibly with Cheapflights today.

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