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Cheap flights from Philadelphia to Sydney from $1,183

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 18/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from Philadelphia to Sydney Kingsford Smith are usually found in February or August, 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 15 April 2025.

Round-trip from

$1,919

One-way from

$1,183

Popular in

December

Cheapest in

February

Average price

$2,202
5/5-14/5
  • 5/5-14/5
  • 4 total stops
  • 70h 39m total
  • Philadelphia to Sydney
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18/5
  • 18/5
  • 2 total stops
  • 35h 00m total
  • Philadelphia to Sydney
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($594 potential increase over avg. return price).
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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 April 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 15 April 2025.

Mon 5/506:21PHL - SYD
2 stops39h 24mMultiple Airlines
Wed 14/513:15SYD - PHL
2 stops31h 15mMultiple Airlines
Deal found 14/4$1,919
Tue 26/817:35PHL - SYD
2 stops28h 10mFiji Airways
Tue 2/906:00SYD - PHL
2 stops30h 56mFiji Airways
Deal found 14/4$2,264
Thu 6/1118:55PHL - SYD
2 stops55h 55mIberia
Wed 12/1121:40SYD - PHL
2 stops58h 40mIberia
Deal found 13/4$2,495
Sun 24/820:30PHL - SYD
1 stop43h 45mQatar Airways
Sat 6/919:00SYD - PHL
2 stops52h 00mQatar Airways
Deal found 14/4$2,505
Wed 3/1206:00PHL - SYD
2 stops34h 45mAir New Zealand
Wed 14/112:10SYD - PHL
1 stop21h 18mAir New Zealand
Deal found 14/4$2,529
Mon 25/810:15PHL - SYD
2 stops33h 10mANA
Mon 8/920:55SYD - PHL
2 stops31h 11mANA
Deal found 14/4$2,551
Sun 19/1009:15PHL - SYD
2 stops56h 05mAir Canada
Mon 3/1111:20SYD - PHL
2 stops43h 30mAir Canada
Deal found 14/4$2,557
Tue 26/818:50PHL - SYD
1 stop22h 15mQantas Airways
Tue 2/917:45SYD - PHL
1 stop20h 58mQantas Airways
Deal found 14/4$2,692
Sun 2/1112:51PHL - SYD
1 stop26h 09mUnited Airlines
Mon 10/1112:10SYD - PHL
1 stop21h 18mUnited Airlines
Deal found 13/4$2,856
Thu 4/1213:00PHL - SYD
2 stops27h 35mDelta
Thu 18/1211:05SYD - PHL
2 stops24h 18mDelta
Deal found 13/4$3,037

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 15 April 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

Mon 5/5

06:21-11:45

2 stops39h 24m

Sydney Kingsford Smith

Wed 14/5

13:15-06:30

2 stops31h 15m

$1,919

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 4/6

18:05-08:45

2 stops24h 40m

Sydney Kingsford Smith

Wed 11/6

10:20-16:57

1 stop20h 37m

$2,548

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 31/5

18:47-11:45

2 stops26h 58m

Sydney Kingsford Smith

Sat 7/6

06:00-07:00

2 stops39h 00m

$2,598

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 28/4

20:40-21:25

2 stops34h 45m

Sydney Kingsford Smith

Mon 5/5

20:45-09:00

1 stop50h 15m

$2,905

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 4/6

18:00-07:05

1 stop23h 05m

Sydney Kingsford Smith

Wed 11/6

10:25-00:59

1 stop28h 34m

$3,143

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 4/7

09:45-07:20

3 stops31h 35m

Sydney Kingsford Smith

Fri 18/7

09:20-14:37

2 stops43h 17m

$3,312

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 5/5

15:46-06:55

2 stops25h 09m

Sydney Kingsford Smith

Mon 12/5

10:20-00:44

3 stops28h 24m

$3,810

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 18/4

16:10-15:10

3 stops33h 00m

Sydney Kingsford Smith

Sat 3/5

17:50-17:55

3 stops62h 05m

$4,547

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 5/5

16:00-05:20

3 stops47h 20m

Sydney Kingsford Smith

Mon 12/5

14:40-19:42

3 stops43h 02m

$5,727

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 22/4

10:48-10:50

2 stops34h 02m

Sydney Kingsford Smith

Wed 30/4

10:10-20:14

2 stops48h 04m

$5,817

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 15 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 11 April 2025.

Booking 27 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.

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 15 April 2025.
Read through reviews of airlines operating flights from Philadelphia to Sydney, such as Air Tahiti Nui, Fiji Airways and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

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
8.8
Very Good
62 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

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
183 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

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
7,917 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

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
8.0
Very Good
464 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

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
818 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

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 Air New Zealand. Our recent data shows that you can find tickets from as low as $2,548 on this airline. Additional options worth looking into are Fiji Airways and Qatar Airways, starting at $2,598 and $2,905 round-trip.

  • 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
Randwick
Terrigal
Cronulla
Lithgow
Bondi Beach
Leura
Swansea

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 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,361Average$1,826FlexibilityNo 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?

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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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