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Cheap flights from Philadelphia to Sydney from $1,071

PHL — SYD
10 Dec — 17 Dec1
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

Tue 8/1214:46 -
1 stop24h 09m
Tue 15/1211:05 -
2 stops25h 30m
Deal found 8/11$1,946
Thu 24/1215:36 -
2 stops27h 24m
Mon 11/114:05 -
1 stop24h 32m
Deal found 5/11$1,964
Tue 22/1215:45 -
2 stops26h 35m
Tue 29/1221:00 -
1 stop25h 34m
Deal found 7/11$1,979
Tue 15/1212:34 -
1 stop26h 21m
Wed 23/1211:05 -
2 stops23h 40m
Deal found 6/11$1,993
Tue 15/1214:46 -
1 stop24h 09m
Wed 23/1221:50 -
2 stops36h 55m
Deal found 5/11$2,009
Wed 2/1214:46 -
1 stop24h 09m
Wed 25/809:10 -
2 stops25h 04m
Deal found 6/11$2,015
Sat 5/1215:55 -
2 stops26h 25m
Sun 13/1214:05 -
1 stop23h 26m
Deal found 6/11$2,037
Sat 28/1120:45 -
1 stop42h 05m
Mon 14/1221:10 -
1 stop33h 40m
Deal found 6/11$2,063
Sat 5/1215:55 -
2 stops26h 25m
Wed 1/912:00 -
1 stop20h 48m
Deal found 5/11$2,073
Wed 2/1217:41 -
2 stops48h 54m
Wed 25/811:55 -
2 stops24h 35m
Deal found 6/11$2,079
Thu 3/1215:55 -
2 stops26h 25m
Sun 13/1214:05 -
1 stop23h 26m
Deal found 5/11$2,093

Find flight deals from Philadelphia to Sydney

Round-trip from

$1,835

One-way from

$1,071

Popular in

April

Cheapest in

March

Average price

$2,119
Qatar Airways
  • Qatar Airways
  • 15/2-3/3
  • 2 total stops
  • 62h 15m total
  • Philadelphia to Sydney
Search Deals
15/2-31/12
  • 15/2-31/12
  • 2 total stops
  • 49h 39m total
  • Philadelphia to Sydney
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($108 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

Cheapflights Fare Finder

 
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

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 15/2

12:46-06:25

2 stops49h 39m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,071

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sat 5/12

07:15-20:15

3 stops45h 00m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,133

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Thu 18/3

14:18-06:25

2 stops49h 07m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,217

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 16/11

08:30-09:50

3 stops57h 20m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,233
Fastest return journey

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 25/11

18:21-09:20

1 stop22h 59m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,740

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 17/2

16:05-06:25

1 stop22h 20m

Sydney Kingsford Smith

Wed 24/2

07:20-17:49

2 stops26h 29m

$1,911

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sun 11/4

21:30-19:55

2 stops32h 25m

Sydney Kingsford Smith

Sun 18/4

15:50-15:05

1 stop37h 15m

$2,050

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 24/2

09:00-08:35

2 stops31h 35m

Sydney Kingsford Smith

Wed 10/3

11:50-00:59

3 stops29h 09m

$2,067

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 1/12

12:22-08:30

2 stops28h 08m

Sydney Kingsford Smith

Sat 12/6

09:15-09:27

2 stops38h 12m

$2,103

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Thu 18/3

21:45-18:20

1 stop29h 35m

Sydney Kingsford Smith

Fri 2/4

21:55-20:09

2 stops37h 14m

$2,173

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 18 resultsSorted by cheapest first
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

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 14 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, March is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,772). Flying from Philadelphia to Sydney in April is currently the most expensive (average of $3,015). 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?

Airfare is below average for this route at the moment.

Philadelphia to Sydney flights typically cost between $2,005 and $2,253 in February.
The cheapest return price found within the last 5 days was $1,835 on Qatar Airways (15 Feb–3 Mar).

Reviews of airlines servicing Sydney

Read reviews from past customers who have flown with Qantas Airways 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.
Qantas Airways
7.5
Good
1,123 reviews
Check prices

Food

7.0

Entertainment

7.2

Boarding

7.7

Comfort

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
4.0
Okay

Robyn,Aug 2026

LAX - SYD

I was flabbergasted when the crew completely missed me in the distribution of food and drinks in Business Class - even after they looked twice at my opened table. However - this has happened to me on my last longhaul QF flight and with the same hosty (older woman with curly bob). She obviously cannot handly the stress of initial boarding as both times she has come back to me with an apology. When compared to our usual Business/ First longhauls with Qatar or Emirates, Qantas leave ALOT to be desired. I would highly recommend going with another airline. BTW I'm a 4th gen Aussie and previous Qantas employee - I would love to love them if they provided service but they just dont.
Qantas Airways
7.5
Good
1,123 reviews
Qantas Airways
7.5
Good
1,123 reviews
Check prices

Food

7.0

Entertainment

7.2

Boarding

7.7

Comfort

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
4.0
Okay

Robyn,Aug 2026

LAX - SYD

I was flabbergasted when the crew completely missed me in the distribution of food and drinks in Business Class - even after they looked twice at my opened table. However - this has happened to me on my last longhaul QF flight and with the same hosty (older woman with curly bob). She obviously cannot handly the stress of initial boarding as both times she has come back to me with an apology. When compared to our usual Business/ First longhauls with Qatar or Emirates, Qantas leave ALOT to be desired. I would highly recommend going with another airline. BTW I'm a 4th gen Aussie and previous Qantas employee - I would love to love them if they provided service but they just dont.

Related info for your journey

  • How long is the flight from Philadelphia to Sydney?

    There are many flights that can get you from Philadelphia to Sydney in 26h 35m. Fly via Qantas Airways, Delta, or ANA 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.

  • What is the cheapest airline to fly from Philadelphia to Sydney round-trip?

    Our cheapest airline available from Philadelphia to Sydney is Qantas Airways. Our recent data shows that you can find tickets from as low as $1,986 on this airline. Qantas Airways is currently priced 9% 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, March is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,772). Flying from Philadelphia to Sydney in April is currently the most expensive (average of $3,015). 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
Manly
Cronulla
Katoomba
Terrigal
Lithgow
Randwick
Leura
Bondi Beach
Coogee

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Philadelphia to Sydney

AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,986Average$2,021FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

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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.

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