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Cheap flights from Philadelphia to Sydney from $957

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 29/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
30 Jun — 7 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Philadelphia to Sydney

Enter your travel dates to find the best prices.

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 31 May 2026.

Sat 30/515:25
PHL
-
SYD
2 stops49h 55m
Air Canada
Sun 14/609:20
SYD
-
PHL
2 stops34h 11m
Air Canada
Deal found 28/5$1,685
Sun 8/1115:20
PHL
-
SYD
2 stops26h 15m
Air Canada
Wed 18/1111:20
SYD
-
PHL
2 stops43h 24m
Air Canada
Deal found 30/5$1,693
Mon 14/910:05
PHL
-
SYD
2 stops31h 15m
Air Canada
Sun 27/909:20
SYD
-
PHL
2 stops26h 12m
Air Canada
Deal found 28/5$1,695
Mon 17/815:37
PHL
-
SYD
1 stop25h 28m
Qantas Airways
Tue 8/909:10
SYD
-
PHL
1 stop23h 24m
Qantas Airways
Deal found 30/5$1,697
Wed 24/615:29
PHL
-
SYD
1 stop25h 36m
Qantas Airways
Wed 15/709:10
SYD
-
PHL
1 stop23h 29m
Qantas Airways
Deal found 27/5$1,699
Mon 2/1115:20
PHL
-
SYD
2 stops26h 15m
Air Canada
Sun 8/1111:20
SYD
-
PHL
2 stops44h 31m
Air Canada
Deal found 27/5$1,700
Sun 16/810:05
PHL
-
SYD
2 stops31h 15m
Air Canada
Wed 9/909:20
SYD
-
PHL
2 stops26h 12m
Air Canada
Deal found 30/5$1,707
Tue 15/907:00
PHL
-
SYD
2 stops34h 20m
Air Canada
Tue 22/909:20
SYD
-
PHL
3 stops43h 27m
Air Canada
Deal found 29/5$1,711

Find 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 31 May 2026.

Round-trip from

$1,693

One-way from

$957

Popular in

December

Cheapest in

February

Average price

$2,012
Air Canada
  • Air Canada
  • 8/11-18/11
  • 4 total stops
  • 69h 39m total
  • Philadelphia to Sydney
Search Deals
Delta
  • Delta
  • 29/6
  • 2 total stops
  • 34h 25m total
  • Philadelphia to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($421 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($95 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 31 May 2026.
Use the filters below to find and compare flights from Philadelphia to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 14/9

18:36-06:55

1 stop22h 19m

Sydney Kingsford Smith

Sun 27/9

09:30-23:30

2 stops28h 00m

$1,809

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 26/7

06:25-06:50

2 stops34h 25m

Sydney Kingsford Smith

Sun 16/8

09:15-09:38

2 stops38h 23m

$1,828

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 1/7

08:05-06:50

2 stops32h 45m

Sydney Kingsford Smith

Mon 13/7

09:15-23:56

2 stops28h 41m

$1,828

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 19/8

09:27-06:55

1 stop31h 28m

Sydney Kingsford Smith

Thu 10/9

10:20-20:55

1 stop24h 35m

$1,891

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 14/8

18:36-06:55

1 stop22h 19m

Sydney Kingsford Smith

Sun 6/9

10:20-07:49

1 stop35h 29m

$1,909

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 1/7

13:31-07:00

2 stops27h 29m

Sydney Kingsford Smith

Mon 13/7

10:20-01:23

1 stop29h 03m

$1,934

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 23/6

17:40-07:05

1 stop23h 25m

Sydney Kingsford Smith

Tue 30/6

09:10-07:05

1 stop35h 55m

$1,983

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 22/11

06:35-08:30

2 stops33h 55m

Sydney Kingsford Smith

Sun 29/11

10:40-06:03

2 stops35h 23m

$2,009

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 4/7

07:10-06:50

2 stops33h 40m

Sydney Kingsford Smith

Tue 7/7

09:15-23:56

2 stops28h 41m

$2,079
Cheapest one-way

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 29/6

06:25-06:50

2 stops34h 25m

$957

Flights are sorted by cheapest return flights first.

Deals found on 26/5

Showing 1-10 of 21 resultsSorted by cheapest first
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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?

Booking 58 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, February is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,473). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $2,788). 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.

How much does it cost for a return flight from Philadelphia to Sydney?

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.

  • How long is the flight from Philadelphia to Sydney?

    There are many flights that can get you from Philadelphia to Sydney in 22h 19m. Fly via United Airlines or Delta to get the fastest option. The distance between Philadelphia and Sydney is about 15871 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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, February is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,473). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $2,788). 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 Sydney?

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

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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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