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Cheap flights from Philadelphia to Australia from $859

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 31/1. 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

Alaska Airlines Logo
18:35 - 19:45PHL-SYD
33h 10m2 stops
Alaska Airlines Logo
21:40 - 17:31SYD-PHL
35h 51m2 stops
$1,709Alaska Airlines
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Fri, 27 Feb - Tue, 3 Mar
Fiji Airways Logo
17:40 - 12:30PHL-SYD
26h 50m2 stops
Fiji Airways Logo
14:10 - 23:39SYD-PHL
25h 29m2 stops
$1,805Fiji Airways
Find Deal
Sat, 28 Feb - Wed, 4 Mar
Qantas Airways Logo
15:55 - 05:00PHL-BNE
22h 05m1 stop
Qantas Airways Logo
09:40 - 14:38BNE-PHL
19h 58m1 stop
$1,866Qantas Airways
Find Deal
Tue, 4 Nov - Tue, 11 Nov
Air Canada Logo
16:35 - 08:45PHL-BNE
25h 10m2 stops
Air Canada Logo
14:05 - 15:51BNE-PHL
64h 46m3 stops
$1,882Air Canada
Find Deal
Tue, 4 Nov - Tue, 11 Nov
Qantas Airways Logo
15:55 - 05:00PHL-BNE
22h 05m1 stop
Qantas Airways Logo
16:50 - 07:25BNE-PHL
29h 35m2 stops
$1,914Qantas Airways
Find Deal
Tue, 4 Nov - Tue, 11 Nov
Multiple Airlines Logo
06:19 - 09:00PHL-SYD
35h 41m3 stops
Multiple Airlines Logo
10:20 - 06:15SYD-PHL
34h 55m3 stops
$1,917Multiple Airlines
Find Deal
Sun, 19 Oct - Sun, 26 Oct
Multiple Airlines Logo
17:50 - 06:45PHL-MEL
45h 55m1 stop
Multiple Airlines Logo
14:30 - 07:02MEL-PHL
31h 32m2 stops
$1,931Multiple Airlines
Find Deal
Fri, 17 Oct - Fri, 24 Oct
Air Canada Logo
15:30 - 07:45PHL-BNE
26h 15m2 stops
Air Canada Logo
09:45 - 14:47BNE-PHL
43h 02m2 stops
$1,999Air Canada
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Tue, 17 Mar - Sat, 21 Mar
United Airlines Logo
18:29 - 12:15PHL-OOL
27h 46m2 stops
United Airlines Logo
07:20 - 17:27OOL-PHL
24h 07m2 stops
$4,193United Airlines
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Thu, 9 Oct - Sat, 18 Oct
United Airlines Logo
18:29 - 12:15PHL-OOL
27h 46m2 stops
United Airlines Logo
07:20 - 17:27OOL-PHL
24h 07m2 stops
$4,195United Airlines
Find Deal
Thu, 9 Oct - Sat, 18 Oct

Fiji Airways flights from Philadelphia to Australia

Our best Fiji Airways deals on Philadelphia to Australia flight tickets
Fiji Airways
28 Feb
PHL17:40Philadelphia
26h 50m
2 stops
SYD12:30Sydney Kingsford Smith
4 Mar
SYD14:10Sydney Kingsford Smith
25h 29m
2 stops
PHL23:39Philadelphia
$1,805
Find similar
Fiji Airways
14 Feb
PHL17:40Philadelphia
26h 50m
2 stops
SYD12:30Sydney Kingsford Smith
23 Feb
SYD06:00Sydney Kingsford Smith
33h 39m
2 stops
PHL23:39Philadelphia
$1,808
Find similar
Fiji Airways
14 Feb
PHL17:40Philadelphia
26h 50m
2 stops
SYD12:30Sydney Kingsford Smith
23 Feb
SYD06:00Sydney Kingsford Smith
33h 39m
2 stops
PHL23:39Philadelphia
$1,809
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Qantas Airways flights from Philadelphia to Australia

Our best Qantas Airways deals on Philadelphia to Australia flight tickets
Qantas Airways
4 Nov
PHL15:55Philadelphia
22h 05m
1 stop
BNE05:00Brisbane
11 Nov
BNE09:40Brisbane
19h 58m
1 stop
PHL14:38Philadelphia
$1,866
Find similar
Qantas Airways
4 Nov
PHL15:55Philadelphia
22h 05m
1 stop
BNE05:00Brisbane
11 Nov
BNE16:50Brisbane
29h 35m
2 stops
PHL07:25Philadelphia
$1,914
Find similar
Qantas Airways
12 Nov
PHL16:03Philadelphia
22h 52m
1 stop
SYD06:55Sydney Kingsford Smith
18 Nov
SYD07:20Sydney Kingsford Smith
23h 18m
2 stops
PHL14:38Philadelphia
$2,069
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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 21 September 2025.
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

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 27/2

18:35-19:45

2 stops33h 10m

Sydney Kingsford Smith

Tue 3/3

21:40-17:31

2 stops35h 51m

$1,709

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 28/2

17:40-12:30

2 stops26h 50m

Sydney Kingsford Smith

Wed 4/3

14:10-23:39

2 stops25h 29m

$1,805

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 4/11

15:55-05:00

1 stop22h 05m

Brisbane

Tue 11/11

09:40-14:38

1 stop19h 58m

$1,866

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 4/11

16:35-08:45

2 stops25h 10m

Brisbane

Tue 11/11

14:05-15:51

3 stops64h 46m

$1,882

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 4/11

15:55-05:00

1 stop22h 05m

Brisbane

Tue 11/11

16:50-07:25

2 stops29h 35m

$1,914

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 19/10

06:19-09:00

3 stops35h 41m

Sydney Kingsford Smith

Sun 26/10

10:20-06:15

3 stops34h 55m

$1,917

PhiladelphiaMelbourne

PHL - MEL

PHLMEL

Philadelphia

Fri 17/10

17:50-06:45

1 stop45h 55m

Melbourne

Fri 24/10

14:30-07:02

2 stops31h 32m

$1,931

PhiladelphiaBrisbane

PHL - BNE

PHLBNE

Philadelphia

Tue 17/3

15:30-07:45

2 stops26h 15m

Brisbane

Sat 21/3

09:45-14:47

2 stops43h 02m

$1,999

PhiladelphiaCoolangatta

PHL - OOL

PHLOOL

Philadelphia

Thu 9/10

18:29-12:15

2 stops27h 46m

Coolangatta Gold Coast

Sat 18/10

07:20-17:27

2 stops24h 07m

$4,193

PhiladelphiaCoolangatta

PHL - OOL

PHLOOL

Philadelphia

Thu 9/10

18:29-12:15

2 stops27h 46m

Coolangatta Gold Coast

Sat 18/10

07:20-17:27

2 stops24h 07m

$4,195

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, September 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 $1,662. If you don’t want to visit Australia in September, then you should wait until February to fly from Philadelphia, when ticket prices are also cheap, with an average price of $1,893.

What is the cheapest day to depart on your flight to Australia?

On average, the least expensive day to fly to Australia from Philadelphia is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $2,050. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Philadelphia to Australia on a Wednesday will generally be more expensive and average around $3,790. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 $2,300 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 $1,597 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

Direct flights

None
There are no direct flights from Philadelphia to Australia. There are no popular flight routes from Philadelphia to Australia.
Search flight deals

  • When did momondo last update prices for flights from Philadelphia Airport to Australia?

    Prices for flights from Philadelphia Airport to Australia refresh 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 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.

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 $1,302Free cancellationRating
7.4
8,923 reviews
Search United Airlines flights

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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