Which airlines fly to Sydney?

Qantas Airways, Air Canada and United Airlines are the top three most popular airlines that fly to Sydney from Philadelphia according to our data. Qantas Airways is the first choice among our users, with 50% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 3 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Philadelphia to Sydney Kingsford Smith?

American Airlines, Qantas Airways, and Delta are the most popular carriers operating from Philadelphia to Sydney Kingsford Smith

When did momondo last update prices for flights from Philadelphia Airport to Sydney Kingsford Smith Airport?

Prices for flights from Philadelphia Airport to Sydney Kingsford Smith Airport are updated daily.

How old do you have to be to fly from Philadelphia Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The necessary travel and health documents for your Sydney Kingsford Smith Airport 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 licence 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.

$928 Cheap Flights from Philadelphia to Sydney in 2025/26

1 adult

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Find the cheapest flights from Philadelphia to Sydney

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14:30 - 09:00PHL-SYD

26h 30m1 stop

19:15 - 14:33SYD-PHL

35h 18m2 stops

$1,485Qantas Airways

Find Deal

Sat, 24 Jan - Mon, 9 Feb

14:30 - 09:00PHL-SYD

26h 30m1 stop

19:15 - 19:06SYD-PHL

39h 51m2 stops

$1,487Qantas Airways

Find Deal

Sun, 25 Jan - Sat, 7 Feb

14:30 - 07:25PHL-SYD

24h 55m1 stop

19:15 - 14:33SYD-PHL

35h 18m2 stops

$1,496Qantas Airways

Find Deal

Sat, 24 Jan - Mon, 9 Feb

14:30 - 07:25PHL-SYD

24h 55m1 stop

19:15 - 14:33SYD-PHL

35h 18m2 stops

$1,497Qantas Airways

Find Deal

Sat, 24 Jan - Mon, 9 Feb

15:30 - 09:35PHL-SYD

26h 05m2 stops

11:20 - 14:47SYD-PHL

43h 27m2 stops

$1,503Air Canada

Find Deal

Mon, 16 Feb - Tue, 24 Feb

15:30 - 09:35PHL-SYD

50h 05m3 stops

11:20 - 14:47SYD-PHL

43h 27m2 stops

$1,514Air Canada

Find Deal

Mon, 16 Feb - Tue, 24 Feb

09:15 - 08:20PHL-SYD

32h 05m2 stops

09:20 - 14:46SYD-PHL

43h 26m2 stops

$1,516Air Canada

Find Deal

Tue, 31 Mar - Mon, 20 Apr

15:42 - 06:25PHL-SYD

23h 43m1 stop

09:10 - 17:55SYD-PHL

22h 45m1 stop

$1,517Qantas Airways

Find Deal

Tue, 31 Mar - Mon, 20 Apr

15:30 - 09:35PHL-SYD

50h 05m3 stops

11:20 - 22:46SYD-PHL

27h 26m2 stops

$1,523Air Canada

Find Deal

Mon, 23 Feb - Tue, 3 Mar

15:30 - 08:20PHL-SYD

49h 50m3 stops

09:20 - 14:46SYD-PHL

43h 26m3 stops

$1,525Air Canada

Find Deal

Tue, 31 Mar - Mon, 20 Apr

Qantas Airways flights from Philadelphia to Sydney

Our best Qantas Airways deals on Philadelphia to Sydney flight tickets

Qantas Airways

24 Jan

PHL14:30Philadelphia

26h 30m

1 stop

SYD09:00Sydney Kingsford Smith

9 Feb

SYD19:15Sydney Kingsford Smith

35h 18m

2 stops

PHL14:33Philadelphia

$1,485

Find similar

Qantas Airways

25 Jan

PHL14:30Philadelphia

26h 30m

1 stop

SYD09:00Sydney Kingsford Smith

7 Feb

SYD19:15Sydney Kingsford Smith

39h 51m

2 stops

PHL19:06Philadelphia

$1,487

Find similar

Qantas Airways

24 Jan

PHL14:30Philadelphia

24h 55m

1 stop

SYD07:25Sydney Kingsford Smith

9 Feb

SYD19:15Sydney Kingsford Smith

35h 18m

2 stops

PHL14:33Philadelphia

$1,496

Find similar

Air Canada flights from Philadelphia to Sydney

Our best Air Canada deals on Philadelphia to Sydney flight tickets

Air Canada

16 Feb

PHL15:30Philadelphia

26h 05m

2 stops

SYD09:35Sydney Kingsford Smith

24 Feb

SYD11:20Sydney Kingsford Smith

43h 27m

2 stops

PHL14:47Philadelphia

$1,503

Find similar

Air Canada

16 Feb

PHL15:30Philadelphia

26h 05m

2 stops

SYD09:35Sydney Kingsford Smith

24 Feb

SYD11:20Sydney Kingsford Smith

43h 27m

2 stops

PHL14:47Philadelphia

$1,505

Find similar

Air Canada

16 Feb

PHL15:30Philadelphia

50h 05m

3 stops

SYD09:35Sydney Kingsford Smith

24 Feb

SYD11:20Sydney Kingsford Smith

43h 27m

2 stops

PHL14:47Philadelphia

$1,514

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 24/1

14:30-09:00

1 stop26h 30m

Sydney Kingsford Smith

Mon 9/2

19:15-14:33

2 stops35h 18m

$1,485

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 25/1

14:30-09:00

1 stop26h 30m

Sydney Kingsford Smith

Sat 7/2

19:15-19:06

2 stops39h 51m

$1,487

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 24/1

14:30-07:25

1 stop24h 55m

Sydney Kingsford Smith

Mon 9/2

19:15-14:33

2 stops35h 18m

$1,496

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 24/1

14:30-07:25

1 stop24h 55m

Sydney Kingsford Smith

Mon 9/2

19:15-14:33

2 stops35h 18m

$1,497

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 16/2

15:30-09:35

2 stops26h 05m

Sydney Kingsford Smith

Tue 24/2

11:20-14:47

2 stops43h 27m

$1,503

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 16/2

15:30-09:35

3 stops50h 05m

Sydney Kingsford Smith

Tue 24/2

11:20-14:47

2 stops43h 27m

$1,514

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 31/3

09:15-08:20

2 stops32h 05m

Sydney Kingsford Smith

Mon 20/4

09:20-14:46

2 stops43h 26m

$1,516

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 31/3

15:42-06:25

1 stop23h 43m

Sydney Kingsford Smith

Mon 20/4

09:10-17:55

1 stop22h 45m

$1,517

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 23/2

15:30-09:35

3 stops50h 05m

Sydney Kingsford Smith

Tue 3/3

11:20-22:46

2 stops27h 26m

$1,523

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 31/3

15:30-08:20

3 stops49h 50m

Sydney Kingsford Smith

Mon 20/4

09:20-14:46

3 stops43h 26m

$1,525

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to Sydney

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 Sydney?

The month of February is, on average, the cheapest month to fly to Sydney from Philadelphia, with most prices found around $1,638. If you aren’t able to travel to Sydney during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,724.

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

Our data shows that Tuesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $2,069. The most expensive day to fly to Sydney is Wednesday, with ticket prices averaging around $3,825.

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

You are more likely to see cheaper flights to Sydney from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,197 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Philadelphia for as low as $1,832 on momondo.

Can stopping save me money on Philadelphia to Sydney flights?

You could potentially save up to 61% on your flight if you consider stops on a Philadelphia to Sydney flight.

How have Philadelphia to Sydney flight prices changed over time?

As of November 2025, prices for Philadelphia to Sydney flights are approximately 58% cheaper when compared to flights at the same time last year.

When to book flights from Philadelphia to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Philadelphia to Sydney (PHL to SYD) flight deals and tips

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

Fastest flight time	22h 55m
Direct flights	None

The fastest flight from Philadelphia to Sydney takes 22h 55m

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

Search flight deals

How far is Philadelphia to Sydney Kingsford Smith by plane?
The straight-line distance from Philadelphia to Sydney Kingsford Smith is 15874.2 km. In terms of flight time, this usually takes a little over 22h 38m.
When did momondo last update prices for flights from Philadelphia Airport to Sydney Kingsford Smith Airport?
Prices for flights from Philadelphia Airport to Sydney Kingsford Smith Airport are updated daily.
How old do you have to be to fly from Philadelphia Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The necessary travel and health documents for your Sydney Kingsford Smith Airport 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 licence 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.

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Philadelphia to Sydney for you.

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

Yes. All flights to Sydney from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Sydney 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 Sydney right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Sydney 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.