Australia

$739+ Cheap flights from Philadelphia (PHL) to Australia

PHL — SYD
Dec 11 — Dec 181
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Cheap flight deals from Philadelphia to Australia

Cheapest flights from Philadelphia to Australia

Wed 12/22:46 pm -
1 stop24h 44m
Wed 12/99:40 am -
1 stop20h 12m
Deal found 11/6$1,272
Mon 12/143:55 pm -
2 stops34h 05m
Tue 1/1212:00 pm -
1 stop20h 41m
Deal found 11/6$1,281
Sun 12/1310:42 am -
1 stop26h 18m
Wed 1/136:00 am -
2 stops25h 15m
Deal found 11/9$1,293
Wed 12/21:52 pm -
2 stops24h 58m
Wed 12/99:40 am -
2 stops21h 53m
Deal found 11/10$1,294
Thu 12/243:36 pm -
1 stop23h 14m
Wed 1/131:10 pm -
1 stop22h 26m
Deal found 11/9$1,311
Tue 12/82:46 pm -
1 stop24h 09m
Tue 12/1511:05 am -
2 stops25h 30m
Deal found 11/8$1,343
Thu 12/241:54 pm -
2 stops24h 56m
Wed 1/139:40 am -
2 stops23h 05m
Deal found 11/9$1,345
Tue 12/13:05 pm -
1 stop23h 50m
Mon 12/79:50 pm -
2 stops33h 02m
Deal found 11/10$1,347
Wed 12/24:06 pm -
1 stop23h 24m
Sun 12/139:40 am -
1 stop29h 33m
Deal found 11/9$1,348
Tue 12/223:45 pm -
2 stops26h 35m
Tue 12/299:00 pm -
1 stop25h 34m
Deal found 11/7$1,366
Wed 12/99:45 am -
2 stops30h 45m
Sun 12/207:35 am -
2 stops54h 24m
Deal found 11/9$1,369
Thu 11/268:45 pm -
1 stop29h 05m
Fri 12/114:10 pm -
1 stop38h 40m
Deal found 11/10$1,369

Find flight deals from Philadelphia to Australia

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,238
(oojo)

One-way from

$739
(Kiwi.com)

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 Philadelphia to Australia
One-way flight from Philadelphia to Australia
Highest demand for flights based on searches. 3% potential increase in price ($48 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($52 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 Philadelphia 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 11/25

9:55 pm-6:25 am

2 stops40h 30m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$755

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 11/17

6:00 am-6:25 am

2 stops32h 25m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$760

PhiladelphiaPerth

PHL Philadelphia - PER Perth

PHLPER

Philadelphia

Thu 3/18

4:00 pm-10:55 pm

2 stops42h 55m

Perth

Wed 12/31

12:00 am-11:00 am

Nonstop0h 00m

$838

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 2/15

12:46 pm-8:35 am

3 stops51h 49m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$842

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 11/16

3:55 pm-8:50 pm

2 stops36h 55m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$852

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

$1,016

PhiladelphiaPerth

PHL Philadelphia - PER Perth

PHLPER

Philadelphia

Thu 3/18

9:45 pm-11:55 am

1 stop26h 10m

Perth

Wed 12/31

12:00 am-11:00 am

Nonstop0h 00m

$1,037

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Wed 1/13

11:18 am-6:20 pm

3 stops40h 02m

Brisbane

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$1,069

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Thu 1/14

5:38 pm-9:30 pm

3 stops59h 52m

Melbourne

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$1,088

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 2/15

4:00 pm-9:00 am

1 stop25h 00m

Sydney Kingsford Smith

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$1,115

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/7

Showing 1-10 of 54 resultsSorted by cheapest first
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Best time to book a flight from Philadelphia to Australia

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

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $1,265). Flying from Philadelphia to Australia in April is currently the most expensive (average of $2,032). 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 Philadelphia to Australia?

The price you pay for your flight from Philadelphia to Australia may vary depending on when you book. For the best chance of a lower fare, look to book 4 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Australia

See what other customers who have flown with Air New Zealand,Qantas Airways, andUnited Airlines from Philadelphia to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Entertainment

7.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.5

Reviews

1 / 20
10.0
Excellent

Blair,Oct 2026

WLG - AKL

The chicken dish was okay but kind of weird unlike the chicken penne on my trip home which was delicious.

Crew

8.5

Entertainment

7.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.5

Reviews

1 / 20
10.0
Excellent

Blair,Oct 2026

WLG - AKL

The chicken dish was okay but kind of weird unlike the chicken penne on my trip home which was delicious.

Crew

8.5

Entertainment

7.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.5

Reviews

1 / 20
10.0
Excellent

Blair,Oct 2026

WLG - AKL

The chicken dish was okay but kind of weird unlike the chicken penne on my trip home which was delicious.

Crew

8.5

Entertainment

7.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.5

Reviews

1 / 20
10.0
Excellent

Blair,Oct 2026

WLG - AKL

The chicken dish was okay but kind of weird unlike the chicken penne on my trip home which was delicious.

Crew

8.5

Entertainment

7.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.5

Reviews

1 / 20
10.0
Excellent

Blair,Oct 2026

WLG - AKL

The chicken dish was okay but kind of weird unlike the chicken penne on my trip home which was delicious.

Crew

8.5

Entertainment

7.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.5

Reviews

1 / 20
10.0
Excellent

Blair,Oct 2026

WLG - AKL

The chicken dish was okay but kind of weird unlike the chicken penne on my trip home which was delicious.

Related info for your journey

  • What airport do you fly from for flights from Philadelphia to Australia?

    Most people fly from Philadelphia (PHL) if they book a flight from Philadelphia to Australia. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • How long is the flight from Philadelphia to Australia?

    Qatar Airways, United Airlines, and Qantas Airways can get you from Philadelphia to Australia in just under 26h 25m. Your travel time can differ by up to 8h 30m. The distance between Philadelphia and Australia is about 9862 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Philadelphia to Australia?

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Philadelphia to Australia (average of $1,265). Flying from Philadelphia to Australia in April is currently the most expensive (average of $2,032). 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 Philadelphia to Australia

AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$945Average$1,501FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,124Average$1,705FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$1,181Average$1,385FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,198Average$1,583FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$1,352Average$1,829FlexibilityNo cancel feeOn-time78%

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