What is the cheapest airline that flies from Philadelphia to Australia?

Cathay Pacific, Qatar Airways, and Air New Zealand are the most popular carriers operating from Philadelphia to Australia

What airlines fly to Australia?

Qantas Airways, United Airlines and Air Canada are the top three most popular airlines that fly to Australia from Philadelphia according to our data. Qantas Airways is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 11 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

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?

As of August 2026, there are 6 operators available to choose from 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.

$712 Cheap Flights from Philadelphia to Australia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:05 am - 7:20 amPHL Philadelphia-SYD Sydney Kingsford Smith

31h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

9:20 am - 9:32 pmSYD Sydney Kingsford Smith-PHL Philadelphia

26h 12m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,185Air Canada

Tue, Sep 15 - Wed, Sep 30

10:05 am - 7:20 amPHL Philadelphia-SYD Sydney Kingsford Smith

31h 15m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Vancouver Intl

9:20 am - 9:32 pmSYD Sydney Kingsford Smith-PHL Philadelphia

26h 12m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,193Air Canada

Tue, Sep 15 - Wed, Sep 30

9:30 pm - 3:00 pmPHL Philadelphia-ADL Adelaide

28h 00m1 stop Doha Hamad Intl

10:00 pm - 2:30 pmADL Adelaide-PHL Philadelphia

30h 00m1 stop Doha Hamad Intl

$1,199Multiple Airlines

Thu, Sep 10 - Thu, Sep 17

9:45 pm - 11:20 pmPHL Philadelphia-MEL Melbourne

34h 35m1 stop Doha Hamad Intl

11:40 pm - 2:40 pmMEL Melbourne-PHL Philadelphia

31h 00m1 stop Doha Hamad Intl

$1,207Multiple Airlines

Tue, Oct 27 - Wed, Nov 4

3:20 pm - 8:35 amPHL Philadelphia-SYD Sydney Kingsford Smith

26h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

11:20 am - 2:44 pmSYD Sydney Kingsford Smith-PHL Philadelphia

43h 24m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,274Air New Zealand

Tue, Oct 27 - Tue, Nov 10

4:00 pm - 6:25 amPHL Philadelphia-SYD Sydney Kingsford Smith

23h 25m1 stop San Francisco

11:05 am - 8:32 pmSYD Sydney Kingsford Smith-PHL Philadelphia

25h 27m2 stops Brisbane Los Angeles

$1,276Qantas Airways

Wed, Oct 28 - Wed, Nov 11

8:45 pm - 8:20 amPHL Philadelphia-BNE Brisbane

44h 35m2 stops Doha Hamad Intl Melbourne

9:55 pm - 2:50 pmBNE Brisbane-PHL Philadelphia

31h 55m1 stop Doha Hamad Intl

$1,276Qatar Airways

Mon, Jan 18 - Mon, Jan 25

4:21 pm - 6:55 amPHL Philadelphia-SYD Sydney Kingsford Smith

22h 34m1 stop Dallas/Fort Worth

11:05 am - 8:32 pmSYD Sydney Kingsford Smith-PHL Philadelphia

25h 27m2 stops Brisbane Los Angeles

$1,277Qantas Airways

Sun, Nov 8 - Wed, Nov 18

3:20 pm - 8:35 amPHL Philadelphia-SYD Sydney Kingsford Smith

26h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

11:20 am - 10:56 pmSYD Sydney Kingsford Smith-PHL Philadelphia

27h 36m2 stops Vancouver Intl Toronto Pearson Intl

$1,279Air New Zealand

Tue, Oct 27 - Wed, Nov 11

8:45 pm - 7:10 pmPHL Philadelphia-PER Perth

33h 25m2 stops Doha Hamad Intl Adelaide

10:45 pm - 2:50 pmPER Perth-PHL Philadelphia

29h 05m1 stop Doha Hamad Intl

$1,332Qatar Airways

Sat, Nov 7 - Sat, Nov 14

Cheap last minute flights

Enter your travel dates to find the best prices.

10:34 am - 9:25 amPHL Philadelphia-SYD Sydney Kingsford Smith

32h 51m2 stops Chicago O'Hare Intl Tokyo Haneda

11:45 am - 2:21 pmSYD Sydney Kingsford Smith-PHL Philadelphia

64h 36m2 stops Tokyo Haneda Washington, D.C. Dulles Intl

$1,427ANA

Tue, Aug 18 - Tue, Aug 25

9:30 pm - 10:20 pmPHL Philadelphia-SYD Sydney Kingsford Smith

34h 50m2 stops Doha Hamad Intl Adelaide

2:50 pm - 2:30 pmSYD Sydney Kingsford Smith-PHL Philadelphia

37h 40m1 stop Doha Hamad Intl

$1,681Qatar Airways

Tue, Aug 18 - Tue, Aug 25

9:30 pm - 6:30 amPHL Philadelphia-SYD Sydney Kingsford Smith

43h 00m1 stop Doha Hamad Intl

2:50 pm - 2:30 pmSYD Sydney Kingsford Smith-PHL Philadelphia

37h 40m1 stop Doha Hamad Intl

$1,908Multiple Airlines

Tue, Aug 18 - Tue, Aug 25

9:30 pm - 10:05 pmPHL Philadelphia-MEL Melbourne

34h 35m1 stop Doha Hamad Intl

4:10 pm - 2:30 pmMEL Melbourne-PHL Philadelphia

36h 20m1 stop Doha Hamad Intl

$2,083Qatar Airways

Tue, Aug 18 - Fri, Aug 21

3:25 pm - 7:20 amPHL Philadelphia-SYD Sydney Kingsford Smith

25h 55m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

9:20 am - 2:49 pmSYD Sydney Kingsford Smith-PHL Philadelphia

43h 29m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$2,176Air Canada

Tue, Aug 18 - Tue, Aug 25

9:30 pm - 10:05 pmPHL Philadelphia-MEL Melbourne

34h 35m1 stop Doha Hamad Intl

10:45 pm - 6:55 pmMEL Melbourne-PHL Philadelphia

34h 10m2 stops Doha Hamad Intl Dublin

$2,201Qatar Airways

Tue, Aug 18 - Fri, Aug 21

9:27 am - 10:55 amPHL Philadelphia-MEL Melbourne

35h 28m2 stops San Francisco Auckland Intl

6:00 am - 8:55 pmMEL Melbourne-PHL Philadelphia

28h 55m2 stops Sydney Kingsford Smith San Francisco

$2,251Air New Zealand

Tue, Aug 18 - Fri, Aug 21

9:27 am - 10:55 amPHL Philadelphia-MEL Melbourne

35h 28m2 stops San Francisco Auckland Intl

8:35 am - 9:38 amMEL Melbourne-PHL Philadelphia

39h 03m3 stops Auckland Intl San Francisco Chicago O'Hare Intl

$2,572Multiple Airlines

Tue, Aug 18 - Fri, Aug 21

9:30 pm - 9:10 pmPHL Philadelphia-OOL Coolangatta Gold Coast

57h 40m2 stops Doha Hamad Intl Sydney Kingsford Smith

7:00 am - 3:45 pmOOL Coolangatta Gold Coast-PHL Philadelphia

46h 45m3 stops Sydney Kingsford Smith Honolulu Portland

$2,595Multiple Airlines

Sun, Aug 16 - Sun, Aug 23

9:30 pm - 8:45 pmPHL Philadelphia-OOL Coolangatta Gold Coast

33h 15m2 stops Doha Hamad Intl Sydney Kingsford Smith

8:20 am - 2:30 pmOOL Coolangatta Gold Coast-PHL Philadelphia

44h 10m2 stops Sydney Kingsford Smith Doha Hamad Intl

$2,682Multiple Airlines

Sun, Aug 16 - Sun, Aug 23

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Air Canada flights from Philadelphia to Australia

Our best Air Canada deals on Philadelphia to Australia flight tickets

Air Canada

Sep 15

PHL10:05 amPhiladelphia

31h 15m

2 stops

SYD7:20 amSydney Kingsford Smith

Sep 30

SYD9:20 amSydney Kingsford Smith

26h 12m

2 stops

PHL9:32 pmPhiladelphia

$1,185

Air Canada

Sep 15

PHL10:05 amPhiladelphia

31h 15m

3 stops

SYD7:20 amSydney Kingsford Smith

Sep 30

SYD9:20 amSydney Kingsford Smith

26h 12m

2 stops

PHL9:32 pmPhiladelphia

$1,193

Air Canada

Sep 15

PHL10:05 amPhiladelphia

31h 15m

2 stops

SYD7:20 amSydney Kingsford Smith

Sep 30

SYD9:20 amSydney Kingsford Smith

26h 12m

2 stops

PHL9:32 pmPhiladelphia

$1,197

Qatar Airways flights from Philadelphia to Australia

Our best Qatar Airways deals on Philadelphia to Australia flight tickets

Qatar Airways

Sep 28

PHL9:30 pmPhiladelphia

34h 35m

1 stop

MEL10:05 pmMelbourne

Oct 5

MEL11:45 pmMelbourne

29h 45m

1 stop

PHL2:30 pmPhiladelphia

$1,244

Qatar Airways

Aug 23

PHL9:30 pmPhiladelphia

29h 20m

1 stop

MEL4:50 pmMelbourne

Sep 20

MEL4:10 pmMelbourne

36h 20m

1 stop

PHL2:30 pmPhiladelphia

$1,257

Qatar Airways

Jan 10

PHL8:45 pmPhiladelphia

41h 00m

1 stop

MEL5:45 amMelbourne

Jan 25

MEL5:10 pmMelbourne

37h 40m

1 stop

PHL2:50 pmPhiladelphia

$1,263

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 9/15

10:05 am-7:20 am

2 stops31h 15m

Sydney Kingsford Smith

Wed 9/30

9:20 am-9:32 pm

2 stops26h 12m

$1,185

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 9/15

10:05 am-7:20 am

3 stops31h 15m

Sydney Kingsford Smith

Wed 9/30

9:20 am-9:32 pm

2 stops26h 12m

$1,193

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Thu 9/10

9:30 pm-3:00 pm

1 stop28h 00m

Adelaide

Thu 9/17

10:00 pm-2:30 pm

1 stop30h 00m

$1,199

PhiladelphiaMelbourne

PHL Philadelphia - MEL Melbourne

PHLMEL

Philadelphia

Tue 10/27

9:45 pm-11:20 pm

1 stop34h 35m

Melbourne

Wed 11/4

11:40 pm-2:40 pm

1 stop31h 00m

$1,207

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 10/27

3:20 pm-8:35 am

2 stops26h 15m

Sydney Kingsford Smith

Tue 11/10

11:20 am-2:44 pm

2 stops43h 24m

$1,274

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 10/28

4:00 pm-6:25 am

1 stop23h 25m

Sydney Kingsford Smith

Wed 11/11

11:05 am-8:32 pm

2 stops25h 27m

$1,276

PhiladelphiaBrisbane

PHL Philadelphia - BNE Brisbane

PHLBNE

Philadelphia

Mon 1/18

8:45 pm-8:20 am

2 stops44h 35m

Brisbane

Mon 1/25

9:55 pm-2:50 pm

1 stop31h 55m

$1,276

Quickest round-trip

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sun 11/8

4:21 pm-6:55 am

1 stop22h 34m

Sydney Kingsford Smith

Wed 11/18

11:05 am-8:32 pm

2 stops25h 27m

$1,277

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 10/27

3:20 pm-8:35 am

2 stops26h 15m

Sydney Kingsford Smith

Wed 11/11

11:20 am-10:56 pm

2 stops27h 36m

$1,279

PhiladelphiaPerth

PHL Philadelphia - PER Perth

PHLPER

Philadelphia

Sat 11/7

8:45 pm-7:10 pm

2 stops33h 25m

Perth

Sat 11/14

10:45 pm-2:50 pm

1 stop29h 05m

$1,332

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Australia?

The month of February is, on average, the cheapest month to fly to Australia from Philadelphia, with most prices found around $1,131. If you aren’t able to travel during the month of February, then book flights to Australia from Philadelphia during March instead. Flights to Australia in March, while not as cheap as those in February, still average around $1,235.

How far in advance should I book a flight from Philadelphia 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 $1,422 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 $999 on momondo.

Can stopping save me money on Philadelphia to Australia flights?

You could potentially save up to 42% 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	25h 18m
Direct flights	None

The fastest flight from Philadelphia to Australia takes 25h 18m

There are no direct flights from Philadelphia to Australia. There are no popular flight routes from Philadelphia to Australia.

Search flight deals

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?
As of August 2026, there are 6 operators available to choose from 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
Fiji Airways	PriceFrom $729	Free Cancellation	Rating 8.0 254 reviews	Search Fiji Airways flights
United Airlines	PriceFrom $843	Free Cancellation	Rating 7.4 10,107 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $945	Free Cancellation	Rating 7.5 1,083 reviews	Search Qantas Airways flights
Air Canada	PriceFrom $1,066	Free Cancellation	Rating 7.1 11,481 reviews	Search Air Canada flights
American Airlines	PriceFrom $1,198	Free Cancellation	Rating 7.1 11,943 reviews	Search American Airlines flights
Qatar Airways	PriceFrom $1,447	Free Cancellation	Rating 7.4 3,738 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.