Australia

$766+ Cheap flights from Pennsylvania to Australia

PHL — SYD
Dec 4 — Dec 111
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Cheap flight deals from Pennsylvania to Australia

Cheapest flights from Pennsylvania to Australia

Sun 11/155:10 pm -
1 stop25h 20m
Tue 11/2412:45 pm -
2 stops27h 14m
Deal found 11/2$1,243
Wed 11/116:30 am -
2 stops36h 00m
Wed 11/2512:45 pm -
2 stops24h 04m
Deal found 11/2$1,247
Fri 11/137:15 pm -
2 stops68h 45m
Tue 11/2410:10 am -
2 stops24h 25m
Deal found 11/2$1,259
Wed 12/23:55 pm -
1 stop22h 55m
Wed 12/99:40 am -
1 stop24h 20m
Deal found 11/2$1,287
Sun 11/810:42 am -
2 stops31h 48m
Sun 11/1512:45 pm -
2 stops26h 59m
Deal found 10/30$1,289
Mon 11/306:21 pm -
1 stop22h 09m
Wed 12/1611:20 am -
2 stops37h 36m
Deal found 11/3$1,293
Thu 11/125:10 pm -
1 stop25h 20m
Wed 11/2512:45 pm -
2 stops27h 12m
Deal found 11/2$1,293
Wed 12/21:52 pm -
2 stops24h 58m
Wed 12/99:40 am -
2 stops23h 15m
Deal found 11/2$1,296
Wed 12/99:45 am -
2 stops30h 45m
Wed 12/2311:20 am -
1 stop20h 46m
Deal found 11/2$1,297
Mon 11/1612:09 pm -
2 stops29h 21m
Wed 12/210:40 am -
2 stops22h 46m
Deal found 11/2$1,298
Mon 11/306:21 pm -
1 stop22h 09m
Tue 12/1511:20 am -
2 stops22h 42m
Deal found 11/2$1,301
Thu 11/125:10 pm -
1 stop25h 20m
Tue 11/2412:45 pm -
1 stop32h 25m
Deal found 11/2$1,304

Find flight deals from Pennsylvania to Australia

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,201
(Globehunters)

One-way from

$766
(Mytrip)

Popular in

April

Cheapest in

March

Average price

$1,463
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
From Pennsylvania to Australia
One-way flight from Pennsylvania to Australia
Highest demand for flights based on searches. 2% potential increase in price ($46 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($51 potential savings vs. average RT price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Pennsylvania to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 12/30

7:10 am-6:25 am

2 stops31h 15m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$766

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Thu 11/12

6:00 am-6:25 am

2 stops32h 25m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$815

PittsburghMelbourne

PIT Pittsburgh - MEL Melbourne

PITMEL

Pittsburgh

Mon 3/1

10:11 am-12:30 pm

2 stops34h 19m

Melbourne

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$845

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sun 11/15

10:15 am-6:25 am

2 stops28h 10m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$870

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Mon 11/30

6:30 pm-7:10 am

2 stops44h 40m

Melbourne

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$890

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Fri 11/13

10:30 am-8:50 pm

2 stops42h 20m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$912

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sun 12/13

8:40 am-7:55 pm

3 stops43h 15m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$928

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Sat 11/21

8:38 pm-5:50 am

2 stops42h 12m

Brisbane

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$953

State CollegeSydney

SCE State College University Park - SYD Sydney Kingsford Smith

SCESYD

State College University Park

Fri 12/4

7:54 pm-6:20 am

2 stops66h 26m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$972

PittsburghMelbourne

PIT Pittsburgh - MEL Melbourne

PITMEL

Pittsburgh

Mon 3/1

8:05 am-10:30 am

1 stop34h 25m

Melbourne

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$1,007

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Pennsylvania to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Pennsylvania with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Pennsylvania to Australia

What is the cheapest month to book a flight from Pennsylvania to Australia?

Currently, March is the cheapest month in which you can book a flight from Pennsylvania to Australia (average of $1,322). Flying from Pennsylvania to Australia in July is currently the most expensive (average of $1,708). 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 far ahead should I book a flight from Pennsylvania to Australia?

To ensure you get the cheapest price possible for a flight from Pennsylvania to Australia, you should look to book at least 4 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

  • How long is the flight from Pennsylvania to Australia?

    A quick flight from Pennsylvania to Australia can take about 25h 34m. Qantas Airways provides one of the quickest options available for as low as $1,227. There are 9605 mi between Pennsylvania and Australia. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Pennsylvania to Australia that include hotel bookings?

    Yes. In addition to deals on Pennsylvania to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pennsylvania to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pennsylvania to Australia.

  • Can I find deals for business class flights from Pennsylvania to Australia?

    Yes. Cheapflights offers flight deals from Pennsylvania to Australia 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 Pennsylvania to Australia?

    Currently, March is the cheapest month in which you can book a flight from Pennsylvania to Australia (average of $1,322). Flying from Pennsylvania to Australia in July is currently the most expensive (average of $1,708). 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

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Pennsylvania to Australia

AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$945Average$1,452FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,079Average$1,425FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,092Average$1,627FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$1,181Average$1,385FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,352Average$1,829FlexibilityNo cancel feeOn-time78%

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