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 45% 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?

Delta is the most popular carrier 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.

$707 Cheap Flights from Philadelphia to Sydney in 2026

1 adult

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Find the cheapest flights from Philadelphia to Sydney

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13:20 - 06:50

PHL

SYD

27h 30m

2 stops

09:15 - 22:50

SYD

PHL

27h 35m

2 stops

$1,414Delta

Tue, 28 Apr - Mon, 4 May

05:45 - 06:50

PHL

SYD

35h 05m

2 stops

09:15 - 20:49

SYD

PHL

25h 34m

2 stops

$1,469Delta

Sun, 10 May - Sat, 16 May

13:20 - 06:50

PHL

SYD

27h 30m

2 stops

09:15 - 20:53

SYD

PHL

25h 38m

2 stops

$1,470Delta

Mon, 13 Apr - Tue, 21 Apr

19:00 - 09:00

PHL

SYD

23h 00m

1 stop

11:20 - 19:42

SYD

PHL

23h 22m

1 stop

$1,476Qantas Airways

Tue, 17 Mar - Tue, 24 Mar

11:42 - 06:05

PHL

SYD

27h 23m

2 stops

09:40 - 23:00

SYD

PHL

28h 20m

2 stops

$1,483Delta

Tue, 17 Mar - Tue, 24 Mar

06:35 - 06:50

PHL

SYD

34h 15m

2 stops

09:15 - 18:39

SYD

PHL

23h 24m

2 stops

$1,484Delta

Sun, 10 May - Sat, 16 May

17:15 - 09:00

PHL

SYD

24h 45m

2 stops

11:20 - 19:42

SYD

PHL

23h 22m

1 stop

$1,486American Airlines

Tue, 17 Mar - Tue, 24 Mar

06:45 - 06:50

PHL

SYD

34h 05m

2 stops

09:15 - 05:43

SYD

PHL

34h 28m

2 stops

$1,497Delta

Fri, 21 Aug - Wed, 26 Aug

16:05 - 06:50

PHL

SYD

24h 45m

2 stops

09:15 - 01:01

SYD

PHL

53h 46m

2 stops

$1,519Delta

Fri, 21 Aug - Mon, 31 Aug

09:41 - 06:05

PHL

SYD

29h 24m

2 stops

09:15 - 23:59

SYD

PHL

28h 44m

2 stops

$1,539Delta

Tue, 24 Mar - Fri, 10 Apr

Qantas Airways flights from Philadelphia to Sydney

Our best Qantas Airways deals on Philadelphia to Sydney flight tickets

Qantas Airways

17 Mar

PHL19:00Philadelphia

23h 00m

1 stop

SYD09:00Sydney Kingsford Smith

24 Mar

SYD11:20Sydney Kingsford Smith

23h 22m

1 stop

PHL19:42Philadelphia

$1,476

Qantas Airways

24 Mar

PHL19:00Philadelphia

23h 00m

1 stop

SYD09:00Sydney Kingsford Smith

10 Apr

SYD09:10Sydney Kingsford Smith

23h 44m

1 stop

PHL18:54Philadelphia

$1,581

Qantas Airways

22 Mar

PHL15:54Philadelphia

28h 41m

2 stops

SYD11:35Sydney Kingsford Smith

7 Apr

SYD21:25Sydney Kingsford Smith

23h 43m

1 stop

PHL07:08Philadelphia

$1,633

United Airlines flights from Philadelphia to Sydney

Our best United Airlines deals on Philadelphia to Sydney flight tickets

United Airlines

13 Mar

PHL08:46Philadelphia

30h 34m

1 stop

SYD06:20Sydney Kingsford Smith

22 Mar

SYD14:00Sydney Kingsford Smith

25h 16m

2 stops

PHL00:16Philadelphia

$1,600

United Airlines

13 Mar

PHL08:46Philadelphia

30h 34m

1 stop

SYD06:20Sydney Kingsford Smith

22 Mar

SYD11:50Sydney Kingsford Smith

38h 55m

1 stop

PHL11:45Philadelphia

$1,605

United Airlines

13 Mar

PHL12:45Philadelphia

28h 20m

2 stops

SYD08:05Sydney Kingsford Smith

22 Mar

SYD10:20Sydney Kingsford Smith

35h 55m

2 stops

PHL07:15Philadelphia

$1,616

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 28/4

13:20-06:50

2 stops27h 30m

Sydney Kingsford Smith

Mon 4/5

09:15-22:50

2 stops27h 35m

$1,414

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 10/5

05:45-06:50

2 stops35h 05m

Sydney Kingsford Smith

Sat 16/5

09:15-20:49

2 stops25h 34m

$1,469

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 13/4

13:20-06:50

2 stops27h 30m

Sydney Kingsford Smith

Tue 21/4

09:15-20:53

2 stops25h 38m

$1,470

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 17/3

19:00-09:00

1 stop23h 00m

Sydney Kingsford Smith

Tue 24/3

11:20-19:42

1 stop23h 22m

$1,476

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 17/3

11:42-06:05

2 stops27h 23m

Sydney Kingsford Smith

Tue 24/3

09:40-23:00

2 stops28h 20m

$1,483

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 10/5

06:35-06:50

2 stops34h 15m

Sydney Kingsford Smith

Sat 16/5

09:15-18:39

2 stops23h 24m

$1,484

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 17/3

17:15-09:00

2 stops24h 45m

Sydney Kingsford Smith

Tue 24/3

11:20-19:42

1 stop23h 22m

$1,486

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 21/8

06:45-06:50

2 stops34h 05m

Sydney Kingsford Smith

Wed 26/8

09:15-05:43

2 stops34h 28m

$1,497

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 21/8

16:05-06:50

2 stops24h 45m

Sydney Kingsford Smith

Mon 31/8

09:15-01:01

2 stops53h 46m

$1,519

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 24/3

09:41-06:05

2 stops29h 24m

Sydney Kingsford Smith

Fri 10/4

09:15-23:59

2 stops28h 44m

$1,539

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 April is, on average, the cheapest month to fly to Sydney from Philadelphia, with most prices found around $1,469. If you aren’t able to travel to Sydney during the month of April, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,505.

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 $2,039 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 $1,393 on momondo.

Can stopping save me money on Philadelphia to Sydney flights?

You could potentially save up to 63% on your flight if you consider stops on a Philadelphia to Sydney flight.

How have Philadelphia to Sydney flight prices changed over time?

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	25h 40m
Direct flights	None

The fastest flight from Philadelphia to Sydney takes 25h 40m

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 25h 40m.
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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Lithgow

Manly

Leura

Coogee

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Cronulla

Randwick

Charlestown

Newport

Swansea

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.