Cheap flights from Philadelphia to Australia from $662

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 8/31. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Philadelphia to Australia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
3:20 pm - 9:35 am
PHL
-
SYD
26h 15m
2 stops
Air Canada Logo
11:20 am - 2:44 pm
SYD
-
PHL
43h 24m
2 stops
$1,217Air Canada
Sun, Nov 8 - Wed, Nov 18
Qantas Airways Logo
3:37 pm - 7:05 am
PHL
-
SYD
25h 28m
1 stop
Qantas Airways Logo
9:10 am - 6:34 pm
SYD
-
PHL
23h 24m
1 stop
$1,220Qantas Airways
Mon, Aug 17 - Tue, Sep 8
Air Canada Logo
10:05 am - 7:20 am
PHL
-
SYD
31h 15m
2 stops
Air Canada Logo
9:20 am - 9:32 pm
SYD
-
PHL
26h 12m
2 stops
$1,221Air Canada
Mon, Sep 14 - Sun, Sep 27
Multiple Airlines Logo
11:39 am - 9:35 am
PHL
-
SYD
29h 56m
3 stops
Multiple Airlines Logo
11:20 am - 2:44 pm
SYD
-
PHL
43h 24m
2 stops
$1,236Multiple Airlines
Wed, Nov 11 - Mon, Nov 16
Multiple Airlines Logo
10:05 am - 7:05 am
PHL
-
BNE
31h 00m
2 stops
Multiple Airlines Logo
8:40 pm - 10:46 pm
BNE
-
PHL
40h 06m
3 stops
$1,284Multiple Airlines
Fri, Sep 4 - Mon, Sep 14
United Airlines Logo
9:25 am - 8:15 am
PHL
-
MEL
32h 50m
1 stop
United Airlines Logo
10:55 am - 5:31 am
MEL
-
PHL
32h 36m
2 stops
$1,302United Airlines
Wed, Jul 1 - Tue, Jul 7
United Airlines Logo
1:31 pm - 7:30 am
PHL
-
MEL
27h 59m
2 stops
United Airlines Logo
10:55 am - 9:19 pm
MEL
-
PHL
24h 24m
2 stops
$1,307United Airlines
Wed, Jul 1 - Tue, Jul 7
American Airlines Logo
1:50 pm - 5:50 am
PHL
-
BNE
25h 00m
2 stops
American Airlines Logo
9:15 am - 5:53 pm
BNE
-
PHL
23h 38m
2 stops
$1,358American Airlines
Sat, Nov 14 - Sat, Nov 28
Air New Zealand Logo
6:36 pm - 8:15 am
PHL
-
MEL
23h 39m
1 stop
Air New Zealand Logo
10:00 am - 5:30 pm
MEL
-
PHL
45h 30m
2 stops
$1,372Air New Zealand
Fri, Sep 11 - Sat, Sep 26
American Airlines Logo
3:29 pm - 10:20 am
PHL
-
CBR
28h 51m
2 stops
American Airlines Logo
6:10 am - 6:41 pm
CBR
-
PHL
26h 31m
2 stops
$1,394American Airlines
Tue, Jun 30 - Tue, Jul 7

Singapore Airlines flights from Philadelphia to Australia

Our best Singapore Airlines deals on Philadelphia to Australia flight tickets
Singapore Airlines
Aug 16
PHL10:50 amPhiladelphia
30h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
Sep 9
SYD9:20 amSydney Kingsford Smith
26h 12m
2 stops
PHL9:32 pmPhiladelphia
$1,239
Singapore Airlines
Jun 13
PHL6:00 amPhiladelphia
35h 20m
1 stop
SYD7:20 amSydney Kingsford Smith
Jun 19
SYD9:20 amSydney Kingsford Smith
38h 49m
1 stop
PHL10:09 amPhiladelphia
$2,426

Air New Zealand flights from Philadelphia to Australia

Our best Air New Zealand deals on Philadelphia to Australia flight tickets
Air New Zealand
Aug 16
PHL10:50 amPhiladelphia
30h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
Sep 8
SYD9:20 amSydney Kingsford Smith
27h 26m
1 stop
PHL10:46 pmPhiladelphia
$1,246
Air New Zealand
Jun 15
PHL1:04 pmPhiladelphia
27h 56m
2 stops
SYD7:00 amSydney Kingsford Smith
Jun 26
SYD10:20 amSydney Kingsford Smith
20h 57m
1 stop
PHL5:17 pmPhiladelphia
$1,363
Air New Zealand
Sep 11
PHL6:36 pmPhiladelphia
23h 39m
1 stop
MEL8:15 amMelbourne
Sep 26
MEL10:00 amMelbourne
45h 30m
2 stops
PHL5:30 pmPhiladelphia
$1,372

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 June 4, 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

Sun 11/8

3:20 pm-9:35 am

2 stops26h 15m

Sydney Kingsford Smith

Wed 11/18

11:20 am-2:44 pm

2 stops43h 24m

$1,217

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 8/17

3:37 pm-7:05 am

1 stop25h 28m

Sydney Kingsford Smith

Tue 9/8

9:10 am-6:34 pm

1 stop23h 24m

$1,220

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 9/14

10:05 am-7:20 am

2 stops31h 15m

Sydney Kingsford Smith

Sun 9/27

9:20 am-9:32 pm

2 stops26h 12m

$1,221

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 11/11

11:39 am-9:35 am

3 stops29h 56m

Sydney Kingsford Smith

Mon 11/16

11:20 am-2:44 pm

2 stops43h 24m

$1,236

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Fri 9/4

10:05 am-7:05 am

2 stops31h 00m

Brisbane

Mon 9/14

8:40 pm-10:46 pm

3 stops40h 06m

$1,284

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Wed 7/1

9:25 am-8:15 am

1 stop32h 50m

Melbourne

Tue 7/7

10:55 am-5:31 am

2 stops32h 36m

$1,302

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Wed 7/1

1:31 pm-7:30 am

2 stops27h 59m

Melbourne

Tue 7/7

10:55 am-9:19 pm

2 stops24h 24m

$1,307
Quickest round-trip

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Sat 11/14

1:50 pm-5:50 am

2 stops25h 00m

Brisbane

Sat 11/28

9:15 am-5:53 pm

2 stops23h 38m

$1,358

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Fri 9/11

6:36 pm-8:15 am

1 stop23h 39m

Melbourne

Sat 9/26

10:00 am-5:30 pm

2 stops45h 30m

$1,372

PhiladelphiaCanberra

PHL - CBR

PHLCBR

Philadelphia

Tue 6/30

3:29 pm-10:20 am

2 stops28h 51m

Canberra

Tue 7/7

6:10 am-6:41 pm

2 stops26h 31m

$1,394

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 August is, on average, the cheapest month to fly to Australia from Philadelphia, with most prices found around $250. If you aren’t able to travel during the month of August, then book flights to Australia from Philadelphia during November instead. Flights to Australia in November, while not as cheap as those in August, still average around $258.

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 $1,472 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 $1,088 on momondo.

Can stopping save me money on Philadelphia to Australia flights?

You could potentially save up to 24% 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

22h 55m

Direct flights

None
The fastest flight from Philadelphia to Australia takes 22h 55m
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
Air CanadaPriceFrom $765Free CancellationRating
7.1
11,126 reviews
Search Air Canada flights
United AirlinesPriceFrom $843Free CancellationRating
7.4
9,773 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $945Free CancellationRating
7.5
1,042 reviews
Search Qantas Airways flights
Fiji AirwaysPriceFrom $954Free CancellationRating
8.1
243 reviews
Search Fiji Airways flights
American AirlinesPriceFrom $1,198Free CancellationRating
7.1
11,641 reviews
Search American Airlines flights
Air New ZealandPriceFrom $1,418Free CancellationRating
8.0
645 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.

An easier way to manage your Australia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 7/4
Sat 7/11

Find better results for your trip to Australia

Popular cities in Australia

Popular flights according to clicks in the last 7 days on momondo