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Cheap flights from Philadelphia to Sydney from $1,074

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Philadelphia to Sydney Kingsford Smith are usually found in August or February, booked 27 days in advance, depart on a Tuesday or Thursday and return on a Thursday

Cheap flight deals from Philadelphia to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 March 2025.

Round-trip from

$1,403

One-way from

$1,074

Popular in

December

Cheapest in

August

Average price

$2,424
United Airlines
  • United Airlines
  • 13/5-28/5
  • 2 total stops
  • 53h 02m total
  • Philadelphia to Sydney
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Fiji Airways
  • Fiji Airways
  • 8/4
  • 2 total stops
  • 27h 10m total
  • Philadelphia to Sydney
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($600 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease ($136 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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Find flight deals from Philadelphia to Sydney

Cheapest flights from Philadelphia to Sydney
Explore the most affordable flight options available from Philadelphia to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2025.

Tue 13/508:30PHL - SYD
1 stop32h 25mUnited Airlines
Wed 28/510:20SYD - PHL
1 stop20h 37mUnited Airlines
Deal found 23/3$1,403
Wed 4/609:45PHL - SYD
2 stops31h 35mAir Canada
Wed 11/609:20SYD - PHL
2 stops27h 01mAir Canada
Deal found 25/3$1,505
Wed 30/412:50PHL - SYD
2 stops28h 30mMultiple Airlines
Sun 18/509:20SYD - PHL
2 stops43h 16mMultiple Airlines
Deal found 25/3$1,529
Tue 26/818:41PHL - SYD
2 stops27h 04mFiji Airways
Tue 2/913:15SYD - PHL
2 stops23h 41mFiji Airways
Deal found 24/3$1,942
Wed 4/618:05PHL - SYD
1 stop22h 50mAir New Zealand
Wed 11/608:45SYD - PHL
2 stops27h 50mAir New Zealand
Deal found 25/3$2,496
Mon 25/820:30PHL - SYD
1 stop43h 45mQatar Airways
Mon 8/920:30SYD - PHL
2 stops50h 30mQatar Airways
Deal found 25/3$2,520
Wed 3/1216:00PHL - SYD
1 stop25h 00mQantas Airways
Wed 14/114:30SYD - PHL
1 stop22h 32mQantas Airways
Deal found 25/3$2,706

Cheapflights Fare Finder

Customise your flight search to find flights from Philadelphia to Sydney 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 25 March 2025.
Use the filters below to find and compare flights from Philadelphia to Sydney that are best for you.

Fly from

Philadelphia

Fly to

Sydney

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 13/5

08:30-06:55

1 stop32h 25m

Sydney Kingsford Smith

Wed 28/5

10:20-16:57

1 stop20h 37m

$1,403

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 4/6

09:45-07:20

2 stops31h 35m

Sydney Kingsford Smith

Wed 11/6

09:20-22:21

2 stops27h 01m

$1,505

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

$1,529

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 26/8

18:41-11:45

2 stops27h 04m

Sydney Kingsford Smith

Tue 2/9

13:15-22:56

2 stops23h 41m

$1,942

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 4/6

18:05-06:55

1 stop22h 50m

Sydney Kingsford Smith

Wed 11/6

08:45-22:35

2 stops27h 50m

$2,496

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 25/8

20:30-06:15

1 stop43h 45m

Sydney Kingsford Smith

Mon 8/9

20:30-09:00

2 stops50h 30m

$2,520

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 26/8

17:35-07:05

1 stop23h 30m

Sydney Kingsford Smith

Tue 2/9

17:45-00:43

1 stop20h 58m

$2,707

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 8/4

18:35-11:45

2 stops27h 10m

$1,074

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 31/3

22:08-19:45

3 stops54h 37m

$1,338

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 31/3

13:56-08:05

1 stop27h 09m

$1,381

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 12 results
1
2

Best time to book a flight from Philadelphia to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney 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 Sydney

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

Use this chart to determine the optimal time to book a return flight from Philadelphia to Sydney. Price data was last updated on 21 March 2025.

Booking 10 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, May is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $129). Flying from Philadelphia to Sydney 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 SYD?

Find hourly flight availability from Philadelphia to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 March 2025.

When flying from Philadelphia to Sydney, 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 Sydney by month

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

In terms of precipitation, rainfall in Sydney 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 Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

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

If weather is an important factor for your trip to Sydney, 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 Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated 25 March 2025.
Read through reviews of airlines operating flights from Philadelphia to Sydney, such as Air Tahiti Nui, Fiji Airways and Air New Zealand. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Food

7.8

Entertainment

7.2

Crew

9.1

Boarding

8.7

Overall

8.7

Comfort

8.0

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

Food

7.8

Entertainment

7.2

Crew

9.1

Boarding

8.7

Overall

8.7

Comfort

8.0

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
182 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Food

7.8

Entertainment

7.2

Crew

9.1

Boarding

8.7

Overall

8.7

Comfort

8.0

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 New Zealand
7.9
Good
455 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Food

7.8

Entertainment

7.2

Crew

9.1

Boarding

8.7

Overall

8.7

Comfort

8.0

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.
Qantas Airways
7.5
Good
809 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Food

7.8

Entertainment

7.2

Crew

9.1

Boarding

8.7

Overall

8.7

Comfort

8.0

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.
Qatar Airways
7.4
Good
3,540 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Food

7.8

Entertainment

7.2

Crew

9.1

Boarding

8.7

Overall

8.7

Comfort

8.0

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 Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Philadelphia to Sydney round-trip?

    Our cheapest airline available from Philadelphia to Sydney is United Airlines. Our recent data shows that you can find tickets from as low as $1,403 on this airline. Additional options worth looking into are Air Canada and Fiji Airways, starting at $1,505 and $1,942 round-trip. United Airlines is currently priced 39% below the average price you’ll pay for this route.

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

    To fly one-way, consider booking your trip with Fiji Airways, which is currently one of the cheapest options available, starting at $1,074. Qantas Airways flights start at $1,381 while deals on Air Tahiti Nui start at $2,068 one-way.

  • Can I find deals for flights from Philadelphia to Sydney that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Sydney.

  • Can I find deals for business class flights from Philadelphia to Sydney?

    Yes. Cheapflights offers flight deals from Philadelphia to Sydney 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 Sydney?

    Currently, May is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $129). Flying from Philadelphia to Sydney 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

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Manly
Penrith
Coogee
Cronulla
Randwick
Terrigal
Lithgow
Bondi Beach
Leura
Swansea

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Philadelphia to Sydney

Discover the top airline that operate flights from Philadelphia to Sydney. 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,367Average$1,705FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for Philadelphia to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Sydney?

Cheapflights simply makes it quick and affordable to book flights from Philadelphia to Sydney by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes, we can. To see specific flights from Philadelphia to Sydney with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Philadelphia to Sydney become cheaper?

Of course! You can now track prices for flights from Philadelphia to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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