Cheap flights from Philadelphia to Australia from $502

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 5/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:41 pm - 11:50 am
PHL
-
SYD
54h 09m
3 stops
Multiple Airlines Logo
6:00 am - 12:15 pm
SYD
-
PHL
44h 15m
3 stops
$960Multiple Airlines
Thu, Apr 16 - Tue, Apr 21
Multiple Airlines Logo
8:00 am - 11:50 am
PHL
-
SYD
37h 50m
3 stops
Multiple Airlines Logo
6:00 am - 5:13 am
SYD
-
PHL
37h 13m
3 stops
$1,017Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
7:55 am - 11:50 am
PHL
-
SYD
37h 55m
3 stops
Multiple Airlines Logo
6:00 am - 5:37 am
SYD
-
PHL
61h 37m
3 stops
$1,023Multiple Airlines
Thu, May 14 - Thu, May 21
Fiji Airways Logo
6:32 pm - 7:20 pm
PHL
-
MEL
34h 48m
2 stops
Fiji Airways Logo
7:30 am - 10:53 pm
MEL
-
PHL
29h 23m
2 stops
$1,264Fiji Airways
Sat, May 16 - Sat, May 30
Qantas Airways Logo
3:43 pm - 5:00 am
PHL
-
BNE
23h 17m
1 stop
Qantas Airways Logo
8:35 pm - 5:52 am
BNE
-
PHL
23h 17m
1 stop
$1,351Qantas Airways
Tue, May 5 - Wed, May 13
Qantas Airways Logo
3:35 pm - 5:00 am
PHL
-
BNE
23h 25m
1 stop
Qantas Airways Logo
8:35 pm - 7:05 am
BNE
-
PHL
24h 30m
1 stop
$1,362Qantas Airways
Tue, Sep 1 - Tue, Sep 15
American Airlines Logo
2:15 pm - 5:00 am
PHL
-
BNE
24h 45m
1 stop
American Airlines Logo
8:35 pm - 8:06 am
BNE
-
PHL
25h 31m
1 stop
$1,390American Airlines
Wed, May 13 - Sun, May 24
American Airlines Logo
1:42 pm - 5:00 am
PHL
-
BNE
25h 18m
2 stops
American Airlines Logo
8:35 pm - 6:47 am
BNE
-
PHL
24h 12m
2 stops
$1,395American Airlines
Wed, May 13 - Sun, May 24
Air Canada Logo
6:00 am - 10:50 am
PHL
-
CBR
38h 50m
3 stops
Air Canada Logo
6:40 pm - 10:43 pm
CBR
-
PHL
42h 03m
3 stops
$2,264Air Canada
Fri, May 15 - Fri, May 22
Air Canada Logo
7:00 am - 10:40 am
PHL
-
OOL
37h 40m
3 stops
Air Canada Logo
6:00 am - 3:41 pm
OOL
-
PHL
47h 41m
3 stops
$2,369Air Canada
Sat, Aug 8 - Wed, Aug 26

Qantas Airways flights from Philadelphia to Australia

Our best Qantas Airways deals on Philadelphia to Australia flight tickets
Qantas Airways
May 5
PHL3:43 pmPhiladelphia
23h 17m
1 stop
BNE5:00 amBrisbane
May 13
BNE8:35 pmBrisbane
23h 17m
1 stop
PHL5:52 amPhiladelphia
$1,351
Qantas Airways
May 13
PHL12:53 pmPhiladelphia
30h 27m
2 stops
BNE9:20 amBrisbane
May 24
BNE8:35 pmBrisbane
24h 25m
1 stop
PHL7:00 amPhiladelphia
$1,406
Qantas Airways
May 13
PHL3:21 pmPhiladelphia
27h 59m
2 stops
BNE9:20 amBrisbane
May 24
BNE8:35 pmBrisbane
24h 25m
1 stop
PHL7:00 amPhiladelphia
$1,407

Delta flights from Philadelphia to Australia

Our best Delta deals on Philadelphia to Australia flight tickets
Delta
Apr 19
PHL1:20 pmPhiladelphia
27h 30m
2 stops
SYD6:50 amSydney Kingsford Smith
May 11
SYD9:15 amSydney Kingsford Smith
27h 57m
2 stops
PHL11:12 pmPhiladelphia
$1,460
Delta
Apr 19
PHL6:00 amPhiladelphia
34h 50m
2 stops
SYD6:50 amSydney Kingsford Smith
May 11
SYD9:15 amSydney Kingsford Smith
22h 12m
2 stops
PHL5:27 pmPhiladelphia
$1,461
Delta
May 15
PHL9:45 amPhiladelphia
32h 05m
2 stops
MEL7:50 amMelbourne
May 22
MEL10:00 amMelbourne
27h 07m
2 stops
PHL11:07 pmPhiladelphia
$1,660

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated April 3, 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 round-trip

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 4/16

3:41 pm-11:50 am

3 stops54h 09m

Sydney Kingsford Smith

Tue 4/21

6:00 am-12:15 pm

3 stops44h 15m

$960

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 4/22

8:00 am-11:50 am

3 stops37h 50m

Sydney Kingsford Smith

Wed 4/29

6:00 am-5:13 am

3 stops37h 13m

$1,017

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 5/14

7:55 am-11:50 am

3 stops37h 55m

Sydney Kingsford Smith

Thu 5/21

6:00 am-5:37 am

3 stops61h 37m

$1,023

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Sat 5/16

6:32 pm-7:20 pm

2 stops34h 48m

Melbourne

Sat 5/30

7:30 am-10:53 pm

2 stops29h 23m

$1,264
Quickest round-trip

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 5/5

3:43 pm-5:00 am

1 stop23h 17m

Brisbane

Wed 5/13

8:35 pm-5:52 am

1 stop23h 17m

$1,351

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 9/1

3:35 pm-5:00 am

1 stop23h 25m

Brisbane

Tue 9/15

8:35 pm-7:05 am

1 stop24h 30m

$1,362

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Wed 5/13

2:15 pm-5:00 am

1 stop24h 45m

Brisbane

Sun 5/24

8:35 pm-8:06 am

1 stop25h 31m

$1,390

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Wed 5/13

1:42 pm-5:00 am

2 stops25h 18m

Brisbane

Sun 5/24

8:35 pm-6:47 am

2 stops24h 12m

$1,395

PhiladelphiaCanberra

PHL - CBR

PHLCBR

Philadelphia

Fri 5/15

6:00 am-10:50 am

3 stops38h 50m

Canberra

Fri 5/22

6:40 pm-10:43 pm

3 stops42h 03m

$2,264

PhiladelphiaCoolangatta

PHL - OOL

PHLOOL

Philadelphia

Sat 8/8

7:00 am-10:40 am

3 stops37h 40m

Coolangatta Gold Coast

Wed 8/26

6:00 am-3:41 pm

3 stops47h 41m

$2,369

Flights are sorted by cheapest round-trip 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?

The month of April is, on average, the cheapest month to fly to Australia from Philadelphia, with most prices found around $959. If you aren’t able to travel during the month of April, then book flights to Australia from Philadelphia during February instead. Flights to Australia in February, while not as cheap as those in April, still average around $1,059.

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 $1,466 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Philadelphia for as low as $1,136 on momondo.

Can stopping save me money on Philadelphia to Australia flights?

You could potentially save up to 22% 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.

Frequently asked questions about flying 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 are updated daily.

  • How many operators does momondo search for flights from Philadelphia Airport to Australia?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to Australia.

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

    The necessary travel and health documents for your Australia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Philadelphia to Australia

Compare and see reviews for airlines that fly from Philadelphia to Australia with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $539Free CancellationRating
7.4
9,542 reviews
Search United Airlines flights
Air CanadaPriceFrom $765Free CancellationRating
7.1
10,889 reviews
Search Air Canada flights
Qantas AirwaysPriceFrom $945Free CancellationRating
7.5
1,016 reviews
Search Qantas Airways flights
Fiji AirwaysPriceFrom $954Free CancellationRating
8.1
238 reviews
Search Fiji Airways flights
American AirlinesPriceFrom $1,198Free CancellationRating
7.1
11,553 reviews
Search American Airlines flights
Air New ZealandPriceFrom $1,418Free CancellationRating
8.0
623 reviews
Search Air New Zealand flights
Qatar AirwaysPriceFrom $1,447Free CancellationRating
7.4
3,730 reviews
Search Qatar Airways flights

Why use momondo?

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

Finding the right flight to Australia from Philadelphia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.

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

Flights from Philadelphia to Australia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Australia from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Philadelphia to Australia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Australia and let you know when they change.

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1 adult
Sun 5/3
Sun 5/10

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