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Cheap flights from Philadelphia to Sydney from $811

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
26 Feb — 5 Mar1
1 adult

The best prices from Philadelphia to Sydney Kingsford Smith are usually found in March or February, booked 9 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 21 February 2025.

Round-trip from

$1,381

One-way from

$811

Popular in

December

Cheapest in

March

Average price

$1,968
United Airlines
  • United Airlines
  • 12/3-25/3
  • 2 total stops
  • 58h 09m total
  • Philadelphia to Sydney
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7/4
  • 7/4
  • 2 total stops
  • 35h 54m total
  • Philadelphia to Sydney
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($585 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($138 potential savings vs. average return price).
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Average for round-trip flights in February 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 21 February 2025.

Wed 8/1013:00PHL - SYD
2 stops28h 00mUnited Airlines
Tue 14/1010:30SYD - PHL
2 stops35h 51mUnited Airlines
Deal found 21/2$1,373
Sat 19/406:40PHL - SYD
2 stops33h 55mMultiple Airlines
Fri 2/517:45SYD - PHL
1 stop25h 21mMultiple Airlines
Deal found 20/2$1,866
Tue 30/906:10PHL - SYD
2 stops37h 15mANA
Wed 8/1012:50SYD - PHL
2 stops40h 01mANA
Deal found 20/2$1,892
Tue 26/817:35PHL - SYD
2 stops25h 10mAir New Zealand
Tue 2/909:55SYD - PHL
2 stops35h 26mAir New Zealand
Deal found 21/2$1,910
Sat 5/418:35PHL - SYD
2 stops27h 10mFiji Airways
Sat 12/413:45SYD - PHL
2 stops23h 11mFiji Airways
Deal found 20/2$2,291
Thu 25/1215:30PHL - SYD
2 stops26h 05mAir Canada
Tue 13/111:20SYD - PHL
2 stops43h 30mAir Canada
Deal found 20/2$2,383
Sat 8/313:50PHL - SYD
2 stops27h 10mAmerican Airlines
Wed 12/311:15SYD - PHL
1 stop27h 34mAmerican Airlines
Deal found 20/2$2,577
Sat 8/311:30PHL - SYD
2 stops27h 20mDelta
Sat 15/313:15SYD - PHL
2 stops25h 29mDelta
Deal found 19/2$2,643
Thu 25/1217:16PHL - SYD
2 stops26h 34mQantas Airways
Tue 13/121:25SYD - PHL
1 stop26h 15mQantas Airways
Deal found 20/2$2,767
Wed 30/417:30PHL - SYD
3 stops35h 30mTurkish Airlines
Sun 18/520:55SYD - PHL
3 stops40h 32mTurkish Airlines
Deal found 21/2$2,835
Fri 21/218:25PHL - SYD
3 stops33h 20mAlaska Airlines
Fri 28/221:40SYD - PHL
2 stops35h 45mAlaska Airlines
Deal found 20/2$3,211
Fri 5/1210:30PHL - SYD
3 stops39h 10mAir Tahiti Nui
Tue 16/1207:05SYD - PHL
3 stops32h 44mAir Tahiti Nui
Deal found 20/2$3,562

Find flights from Philadelphia to Sydney within your budget

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 21 February 2025.

Fly from

Philadelphia

Fly to

Sydney

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 12/3

08:00-07:00

1 stop32h 00m

Sydney Kingsford Smith

Tue 25/3

11:50-22:59

1 stop26h 09m

$1,381

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 19/4

06:40-06:35

2 stops33h 55m

Sydney Kingsford Smith

Fri 2/5

17:45-05:06

1 stop25h 21m

$1,866

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 22/4

08:30-10:35

2 stops36h 05m

Sydney Kingsford Smith

Wed 30/4

10:20-17:11

1 stop20h 51m

$2,181

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 5/4

18:35-11:45

2 stops27h 10m

Sydney Kingsford Smith

Sat 12/4

13:45-22:56

2 stops23h 11m

$2,291

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 12/3

15:30-08:35

2 stops26h 05m

Sydney Kingsford Smith

Tue 25/3

10:25-14:50

3 stops43h 25m

$2,392

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 8/3

13:50-09:00

2 stops27h 10m

Sydney Kingsford Smith

Wed 12/3

11:15-23:49

1 stop27h 34m

$2,577

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 8/3

11:30-06:50

2 stops27h 20m

Sydney Kingsford Smith

Sat 15/3

13:15-23:44

2 stops25h 29m

$2,643

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 30/4

17:30-19:00

3 stops35h 30m

Sydney Kingsford Smith

Sun 18/5

20:55-23:27

3 stops40h 32m

$2,835

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 29/5

18:00-07:30

1 stop23h 30m

Sydney Kingsford Smith

Thu 26/6

09:10-19:07

1 stop23h 57m

$2,966

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 6/3

18:25-19:45

3 stops33h 20m

Sydney Kingsford Smith

Sun 16/3

21:40-17:25

2 stops34h 45m

$3,633

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 19 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.

Travel insights for flights from Philadelphia to Sydney

Get recent, data-driven insights about flights from Philadelphia to Sydney including ideal travel times, pricing trends, and more.

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 14 February 2025.

Booking 8 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 21 February 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 21 February 2025.
Read through reviews of airlines operating flights from Philadelphia to Sydney, such as Air Tahiti Nui, Korean Air and Fiji Airways. 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

Entertainment

7.2

Crew

9.1

Food

7.8

Comfort

8.0

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

Entertainment

7.2

Crew

9.1

Food

7.8

Comfort

8.0

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.

Korean Air
8.4
Very Good
1,037 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Entertainment

7.2

Crew

9.1

Food

7.8

Comfort

8.0

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

Entertainment

7.2

Crew

9.1

Food

7.8

Comfort

8.0

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.

Delta
8.0
Very Good
8,213 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Entertainment

7.2

Crew

9.1

Food

7.8

Comfort

8.0

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
9,697 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Entertainment

7.2

Crew

9.1

Food

7.8

Comfort

8.0

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 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 $1,381 on this airline. Additional options worth looking into are Air New Zealand and Fiji Airways, starting at $2,181 and $2,291 round-trip. United Airlines is currently priced 40% below the average price you’ll pay for this route.

  • 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
Randwick
Manly
Penrith
Coogee
Cronulla
Terrigal
Bondi Beach
Lithgow
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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,347Average$1,808FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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