Cheap flights from Philadelphia to Australia from $711

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Australia departing on 23/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:48 - 07:30
PHL
-
SYD
29h 42m
2 stops
Multiple Airlines Logo
09:10 - 06:50
SYD
-
PHL
35h 40m
2 stops
$1,735Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
12:47 - 07:05
PHL
-
SYD
28h 18m
2 stops
Multiple Airlines Logo
09:10 - 15:16
SYD
-
PHL
44h 06m
2 stops
$1,778Multiple Airlines
Sun, 3 May - Tue, 19 May
Multiple Airlines Logo
05:01 - 07:30
PHL
-
SYD
36h 29m
2 stops
Multiple Airlines Logo
09:10 - 13:21
SYD
-
PHL
42h 11m
2 stops
$1,817Multiple Airlines
Mon, 13 Apr - Mon, 27 Apr
Qantas Airways Logo
17:37 - 05:00
PHL
-
BNE
21h 23m
1 stop
Qantas Airways Logo
20:35 - 07:00
BNE
-
PHL
24h 25m
1 stop
$1,851Qantas Airways
Wed, 13 May - Sun, 24 May
Qantas Airways Logo
17:37 - 05:00
PHL
-
BNE
21h 23m
1 stop
Qantas Airways Logo
20:35 - 05:52
BNE
-
PHL
23h 17m
1 stop
$1,853Qantas Airways
Tue, 5 May - Tue, 12 May
American Airlines Logo
11:15 - 05:00
PHL
-
BNE
27h 45m
1 stop
American Airlines Logo
20:35 - 08:06
BNE
-
PHL
25h 31m
1 stop
$1,854American Airlines
Wed, 13 May - Sun, 24 May
American Airlines Logo
12:53 - 05:00
PHL
-
BNE
26h 07m
2 stops
American Airlines Logo
20:35 - 07:00
BNE
-
PHL
24h 25m
1 stop
$1,860American Airlines
Wed, 13 May - Sun, 24 May
Delta Logo
14:32 - 07:50
PHL
-
MEL
27h 18m
2 stops
Delta Logo
10:00 - 20:33
MEL
-
PHL
24h 33m
2 stops
$2,098Delta
Mon, 3 Aug - Sun, 23 Aug
Qatar Airways Logo
20:30 - 18:35
PHL
-
PER
34h 05m
1 stop
Qatar Airways Logo
22:45 - 19:49
PER
-
PHL
33h 04m
2 stops
$2,568Qatar Airways
Wed, 5 Aug - Wed, 26 Aug
Qatar Airways Logo
20:30 - 18:35
PHL
-
PER
34h 05m
1 stop
Qatar Airways Logo
22:45 - 09:00
PER
-
PHL
46h 15m
1 stop
$2,657Qatar Airways
Sat, 16 May - Sat, 23 May

Qantas Airways flights from Philadelphia to Australia

Our best Qantas Airways deals on Philadelphia to Australia flight tickets
Qantas Airways
13 May
PHL17:37Philadelphia
21h 23m
1 stop
BNE05:00Brisbane
24 May
BNE20:35Brisbane
24h 25m
1 stop
PHL07:00Philadelphia
$1,851
Qantas Airways
5 May
PHL17:37Philadelphia
21h 23m
1 stop
BNE05:00Brisbane
12 May
BNE20:35Brisbane
23h 17m
1 stop
PHL05:52Philadelphia
$1,853
Qantas Airways
13 May
PHL15:21Philadelphia
27h 59m
2 stops
BNE09:20Brisbane
24 May
BNE20:35Brisbane
24h 25m
1 stop
PHL07:00Philadelphia
$1,878

American Airlines flights from Philadelphia to Australia

Our best American Airlines deals on Philadelphia to Australia flight tickets
American Airlines
13 May
PHL11:15Philadelphia
27h 45m
1 stop
BNE05:00Brisbane
24 May
BNE20:35Brisbane
25h 31m
1 stop
PHL08:06Philadelphia
$1,854
American Airlines
13 May
PHL12:53Philadelphia
26h 07m
2 stops
BNE05:00Brisbane
24 May
BNE20:35Brisbane
24h 25m
1 stop
PHL07:00Philadelphia
$1,860
American Airlines
13 May
PHL15:21Philadelphia
23h 39m
2 stops
BNE05:00Brisbane
24 May
BNE20:35Brisbane
24h 25m
1 stop
PHL07:00Philadelphia
$1,861

momondo Fare Finder

 
Customise your flight search to find flights from Philadelphia to Australia 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, momondo users made 78,305 searches. Data last updated 25 March 2026.
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 return flight

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 21/4

11:48-07:30

2 stops29h 42m

Sydney Kingsford Smith

Tue 28/4

09:10-06:50

2 stops35h 40m

$1,735

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/5

12:47-07:05

2 stops28h 18m

Sydney Kingsford Smith

Tue 19/5

09:10-15:16

2 stops44h 06m

$1,778

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 13/4

05:01-07:30

2 stops36h 29m

Sydney Kingsford Smith

Mon 27/4

09:10-13:21

2 stops42h 11m

$1,817

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Wed 13/5

17:37-05:00

1 stop21h 23m

Brisbane

Sun 24/5

20:35-07:00

1 stop24h 25m

$1,851
Fastest return journey

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 5/5

17:37-05:00

1 stop21h 23m

Brisbane

Tue 12/5

20:35-05:52

1 stop23h 17m

$1,853

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Wed 13/5

11:15-05:00

1 stop27h 45m

Brisbane

Sun 24/5

20:35-08:06

1 stop25h 31m

$1,854

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Wed 13/5

12:53-05:00

2 stops26h 07m

Brisbane

Sun 24/5

20:35-07:00

1 stop24h 25m

$1,860

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Mon 3/8

14:32-07:50

2 stops27h 18m

Melbourne

Sun 23/8

10:00-20:33

2 stops24h 33m

$2,098

PhiladelphiaPerth

PHL - PER

PHLPER

Philadelphia

Wed 5/8

20:30-18:35

1 stop34h 05m

Perth

Wed 26/8

22:45-19:49

2 stops33h 04m

$2,568

PhiladelphiaPerth

PHL - PER

PHLPER

Philadelphia

Sat 16/5

20:30-18:35

1 stop34h 05m

Perth

Sat 23/5

22:45-09:00

1 stop46h 15m

$2,657

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Australia from

How to get the cheapest flight ticket from Philadelphia to Australia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Australia?

In general, April is the cheapest month to fly from Philadelphia to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,375. If you don’t want to visit Australia in April, then you should wait until February to fly from Philadelphia, when ticket prices are also cheap, with an average price of $1,518.

How far in advance should I book a flight to Australia?

You are more likely to see cheaper flights to Australia from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $2,134 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Philadelphia for as low as $1,629 on momondo.

Can stopping save me money on Philadelphia to Australia flights?

You could potentially save up to 54% on your flight if you consider stops on a Philadelphia to Australia flight.

Cheap Philadelphia to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Australia

Fastest flight time

23h 04m

Direct flights

None
The fastest flight from Philadelphia to Australia takes 23h 04m
There are no direct flights from Philadelphia to Australia. There are no popular flight routes from Philadelphia to Australia.
  • When did momondo last update prices for flights from Philadelphia Airport to Australia?

    Prices for flights from Philadelphia Airport to Australia refresh daily.

  • How old do you have to be to fly from Philadelphia Airport to Australia?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to Australia.

  • What documentation or ID do you need to fly to Australia?

    The required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Australia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Philadelphia to Australia . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Philadelphia to Australia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Philadelphia to Australia flights to just show those with flexible booking policies.

How can momondo help me find flights from Philadelphia to Australia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Philadelphia to Australia.

I’m not ready to book a flight from Philadelphia to Australia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Australia from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Fri 24/4
Fri 1/5

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