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Cheap flights from Philadelphia to Sydney from $955

PHL — SYD
27 Oct — 3 Nov1
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

Sun 8/1109:15 -
2 stops32h 20m
Sun 15/1111:20 -
2 stops43h 24m
Deal found 24/9$1,749
Sun 8/1117:05 -
2 stops48h 30m
Wed 18/1111:20 -
2 stops43h 24m
Deal found 23/9$1,759
Tue 10/1120:45 -
1 stop42h 05m
Tue 17/1115:50 -
1 stop39h 00m
Deal found 26/9$1,763
Thu 5/1115:20 -
2 stops26h 15m
Sun 15/1111:20 -
2 stops43h 24m
Deal found 24/9$1,806
Mon 30/1115:20 -
2 stops26h 15m
Mon 7/1216:00 -
2 stops38h 44m
Deal found 27/9$1,822

Find flight deals from Philadelphia to Sydney

Round-trip from

$1,749

One-way from

$955

Popular in

January

Cheapest in

February

Average price

$1,977
Air Canada
  • Air Canada
  • 8/11-15/11
  • 4 total stops
  • 75h 44m total
  • Philadelphia to Sydney
Search Deals
12/10-31/12
  • 12/10-31/12
  • 2 total stops
  • 34h 40m total
  • Philadelphia to Sydney
Search Deals
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($42 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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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

Tue 16/2

06:15-20:25

3 stops46h 10m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,097

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 12/10

20:44-08:40

3 stops44h 56m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,207

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 13/10

08:30-19:10

3 stops43h 40m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,214

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sat 26/12

16:56-19:55

3 stops58h 59m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,548

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Thu 8/10

06:00-18:50

3 stops45h 50m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,608
Fastest return journey

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 20/1

18:13-09:20

1 stop23h 07m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,620

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 4/1

08:00-08:35

2 stops32h 35m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,753

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 17/2

20:45-22:20

2 stops33h 35m

Sydney Kingsford Smith

Wed 24/2

15:50-14:50

1 stop39h 00m

$1,850

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 12/10

21:30-22:20

2 stops33h 50m

Sydney Kingsford Smith

Tue 20/10

15:50-14:30

1 stop37h 40m

$2,180

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Thu 4/3

10:05-10:35

3 stops32h 30m

Sydney Kingsford Smith

Wed 24/3

11:50-10:07

3 stops37h 17m

$2,244

Flights are sorted by cheapest return flights first.

Deals found on 23/9

Showing 1-10 of 19 resultsSorted by cheapest first
1
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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

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 $1,489). Flying from Philadelphia to Sydney in January is currently the most expensive (average of $2,343). 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 $1,869 and $2,728 in November.
The cheapest return price found within the last 5 days was $1,749 on Air Canada (8 Nov–15 Nov).

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
1,102 reviews
Check prices

Comfort

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.2

Food

7.0

Overall

7.5

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
1,102 reviews
Qantas Airways
7.5
Good
1,102 reviews
Check prices

Comfort

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.2

Food

7.0

Overall

7.5

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 15m. Fly via Qatar Airways, Air Canada, or United Airlines 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 $1,951 on this airline. Qantas Airways is currently priced 3% 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, February is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,489). Flying from Philadelphia to Sydney in January is currently the most expensive (average of $2,343). 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
Lithgow
Cronulla
Terrigal
Katoomba
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$1,951Average$1,985FlexibilityNo 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.

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Sydney?

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