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Cheap flights from Philadelphia to Sydney from $931

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
9 Jul — 16 Jul1
1 adult

Cheapflights Tip: The best prices from Philadelphia to Sydney Kingsford Smith are usually found in September 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 4 July 2025.

Round-trip from

$1,773

One-way from

$931

Popular in

December

Cheapest in

September

Average price

$2,553
ANA
  • ANA
  • 25/8-8/9
  • 4 total stops
  • 76h 46m total
  • Philadelphia to Sydney
Search Deals
22/10
  • 22/10
  • 2 total stops
  • 45h 07m total
  • Philadelphia to Sydney
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($583 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($114 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 4 July 2025.

Mon 25/810:10PHL - SYD
2 stops33h 15mANA
Mon 8/911:50SYD - PHL
2 stops43h 31mANA
Deal found 3/7$1,773
Sat 1/1106:30PHL - SYD
3 stops35h 05mMultiple Airlines
Sat 15/1111:20SYD - PHL
3 stops34h 12mMultiple Airlines
Deal found 3/7$1,908
Wed 3/1212:50PHL - SYD
2 stops33h 35mQantas Airways
Wed 14/107:05SYD - PHL
2 stops26h 39mQantas Airways
Deal found 4/7$1,940
Fri 24/1015:45PHL - SYD
2 stops30h 00mFiji Airways
Sat 15/1106:00SYD - PHL
2 stops31h 13mFiji Airways
Deal found 2/7$1,976
Mon 25/815:20PHL - SYD
3 stops50h 00mAir Canada
Mon 8/909:20SYD - PHL
2 stops26h 48mAir Canada
Deal found 4/7$2,101
Sun 16/1118:55PHL - SYD
2 stops55h 55mIberia
Mon 1/1221:40SYD - PHL
2 stops58h 40mIberia
Deal found 3/7$2,115

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 4 July 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 25/8

10:10-09:25

2 stops33h 15m

Sydney Kingsford Smith

Mon 8/9

11:50-17:21

2 stops43h 31m

$1,773

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 1/11

06:30-08:35

3 stops35h 05m

Sydney Kingsford Smith

Sat 15/11

11:20-05:32

3 stops34h 12m

$1,908

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 3/12

12:50-14:25

2 stops33h 35m

Sydney Kingsford Smith

Wed 14/1

07:05-17:44

2 stops26h 39m

$1,940

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 24/10

15:45-12:45

2 stops30h 00m

Sydney Kingsford Smith

Sat 15/11

06:00-21:13

2 stops31h 13m

$1,976

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 9/9

09:20-07:20

3 stops32h 00m

Sydney Kingsford Smith

Tue 23/9

09:20-21:38

2 stops26h 18m

$2,101

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 16/11

18:55-18:50

2 stops55h 55m

Sydney Kingsford Smith

Mon 1/12

21:40-16:20

2 stops58h 40m

$2,115

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 3/12

06:20-08:45

2 stops34h 25m

Sydney Kingsford Smith

Wed 14/1

12:10-17:28

1 stop21h 18m

$2,243

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 22/10

19:23-07:30

2 stops45h 07m

$931

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 15/11

16:00-12:30

2 stops28h 30m

$1,030

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 30/12

10:10-20:15

2 stops42h 05m

$1,182

Flights are sorted by cheapest return flights first.

Deals found on 3/7

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 27 June 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.

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 4 July 2025.
Read reviews from past customers who have flown with ANA, Fiji Airways, andAir New Zealand from Philadelphia to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very Good
886 reviews
Check prices

Entertainment

7.9

Overall

8.4

Comfort

8.2

Crew

8.7

Boarding

8.5

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.4
Very Good
886 reviews
ANA
8.4
Very Good
886 reviews
Check prices

Entertainment

7.9

Overall

8.4

Comfort

8.2

Crew

8.7

Boarding

8.5

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Fiji Airways
8.0
Very Good
202 reviews
ANA
8.4
Very Good
886 reviews
Check prices

Entertainment

7.9

Overall

8.4

Comfort

8.2

Crew

8.7

Boarding

8.5

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Air New Zealand
8.0
Very Good
485 reviews
ANA
8.4
Very Good
886 reviews
Check prices

Entertainment

7.9

Overall

8.4

Comfort

8.2

Crew

8.7

Boarding

8.5

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Qantas Airways
7.5
Good
872 reviews
ANA
8.4
Very Good
886 reviews
Check prices

Entertainment

7.9

Overall

8.4

Comfort

8.2

Crew

8.7

Boarding

8.5

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Qatar Airways
7.4
Good
3,588 reviews
ANA
8.4
Very Good
886 reviews
Check prices

Entertainment

7.9

Overall

8.4

Comfort

8.2

Crew

8.7

Boarding

8.5

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

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 ANA. Our recent data shows that you can find tickets from as low as $1,773 on this airline. Additional options worth looking into are Qantas Airways and Fiji Airways, starting at $1,940 and $1,976 round-trip. ANA is currently priced 21% 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 $1,030. ANA flights start at $1,182 while deals on Qantas Airways start at $1,573 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
Randwick
Cronulla
Terrigal
Lithgow
Bondi Beach
Leura

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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,307Average$1,755FlexibilityNo 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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