Which airport is the most popular layover for flights between Philadelphia and Sydney?

Los Angeles (LAX) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Philadelphia to Sydney?

Flights via Houston (IAH) offer the lowest average round-trip price of $880.

Which layover airport has the shortest travel time from Philadelphia to Sydney?

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 22h 46m.

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

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

What airlines fly to Sydney?

United Airlines, Qantas Airways and Delta are the top three most popular airlines that fly to Sydney from Philadelphia according to our data. United Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 11 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Philadelphia to Sydney?

San Francisco (SFO) has the shortest average layover time for this route: 1h 47m.

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 refreshed on a daily basis.

How many operators does momondo search for flights from Philadelphia Airport to Sydney Kingsford Smith Airport?

As of January 2026, there are 7 operators available to choose from for flights from Philadelphia Airport to Sydney Kingsford Smith Airport.

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 layovers. 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$589 Cheap Flights from Philadelphia to Sydney in 2026

Q: What is the typical price of a round-trip flight between Philadelphia and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,189 to $1,744. The lowest price recently found on this route was $1,045.

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2:18 pm - 8:05 am

PHL

SYD

26h 47m

1 stop

9:10 am - 6:54 pm

SYD

PHL

23h 44m

1 stop

$1,045Qantas Airways

Sun, Mar 29 - Sun, Apr 12

2:16 pm - 9:00 am

PHL

SYD

26h 44m

1 stop

9:25 pm - 8:08 am

SYD

PHL

26h 43m

1 stop

$1,046Qantas Airways

Mon, Feb 16 - Tue, Feb 24

5:20 pm - 9:00 am

PHL

SYD

23h 40m

2 stops

11:20 am - 7:48 pm

SYD

PHL

24h 28m

1 stop

$1,052American Airlines

Mon, Feb 23 - Tue, Mar 3

2:57 pm - 6:55 am

PHL

SYD

23h 58m

1 stop

11:20 am - 7:42 pm

SYD

PHL

23h 22m

1 stop

$1,056Qantas Airways

Mon, Mar 2 - Mon, Mar 16

6:10 am - 8:30 am

PHL

SYD

34h 20m

2 stops

2:15 pm - 12:24 am

SYD

PHL

26h 09m

2 stops

$1,069Delta

Mon, Feb 16 - Tue, Feb 24

6:55 am - 8:30 am

PHL

SYD

33h 35m

2 stops

10:40 am - 8:49 pm

SYD

PHL

26h 09m

2 stops

$1,070Delta

Mon, Feb 16 - Tue, Feb 24

3:59 pm - 6:55 am

PHL

SYD

22h 56m

1 stop

11:20 am - 7:42 pm

SYD

PHL

23h 22m

1 stop

$1,111Qantas Airways

Sat, Mar 7 - Sun, Mar 15

7:00 pm - 9:00 am

PHL

SYD

23h 00m

1 stop

9:10 am - 6:54 pm

SYD

PHL

23h 44m

1 stop

$1,120Qantas Airways

Tue, Mar 24 - Fri, Apr 10

2:16 pm - 9:00 am

PHL

SYD

26h 44m

1 stop

2:05 pm - 9:44 pm

SYD

PHL

23h 39m

1 stop

$1,121Qantas Airways

Mon, Feb 16 - Sat, Feb 28

2:18 pm - 7:25 am

PHL

SYD

26h 07m

1 stop

9:25 pm - 8:08 am

SYD

PHL

25h 43m

1 stop

$1,122Qantas Airways

Fri, Mar 13 - Sun, Mar 22

American Airlines flights from Philadelphia to Sydney

Our best American Airlines deals on Philadelphia to Sydney flight tickets

American Airlines

Feb 23

PHL5:20 pmPhiladelphia

23h 40m

2 stops

SYD9:00 amSydney Kingsford Smith

Mar 3

SYD11:20 amSydney Kingsford Smith

24h 28m

1 stop

PHL7:48 pmPhiladelphia

$1,052

American Airlines

Feb 2

PHL3:45 pmPhiladelphia

25h 15m

2 stops

SYD9:00 amSydney Kingsford Smith

Feb 14

SYD11:20 amSydney Kingsford Smith

24h 28m

1 stop

PHL7:48 pmPhiladelphia

$1,127

American Airlines

Feb 16

PHL10:45 amPhiladelphia

30h 15m

1 stop

SYD9:00 amSydney Kingsford Smith

Feb 24

SYD11:20 amSydney Kingsford Smith

24h 20m

2 stops

PHL7:40 pmPhiladelphia

$1,202

Delta flights from Philadelphia to Sydney

Our best Delta deals on Philadelphia to Sydney flight tickets

Delta

Feb 16

PHL6:10 amPhiladelphia

34h 20m

2 stops

SYD8:30 amSydney Kingsford Smith

Feb 24

SYD2:15 pmSydney Kingsford Smith

26h 09m

2 stops

PHL12:24 amPhiladelphia

$1,069

Delta

Feb 16

PHL6:55 amPhiladelphia

33h 35m

2 stops

SYD8:30 amSydney Kingsford Smith

Feb 24

SYD10:40 amSydney Kingsford Smith

26h 09m

2 stops

PHL8:49 pmPhiladelphia

$1,070

Delta

Feb 18

PHL5:31 amPhiladelphia

34h 59m

2 stops

SYD8:30 amSydney Kingsford Smith

Feb 27

SYD10:40 amSydney Kingsford Smith

22h 58m

2 stops

PHL5:38 pmPhiladelphia

$1,144

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/29

2:18 pm-8:05 am

1 stop26h 47m

Sydney Kingsford Smith

Sun 4/12

9:10 am-6:54 pm

1 stop23h 44m

$1,045

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/16

2:16 pm-9:00 am

1 stop26h 44m

Sydney Kingsford Smith

Tue 2/24

9:25 pm-8:08 am

1 stop26h 43m

$1,046

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/23

5:20 pm-9:00 am

2 stops23h 40m

Sydney Kingsford Smith

Tue 3/3

11:20 am-7:48 pm

1 stop24h 28m

$1,052

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 3/2

2:57 pm-6:55 am

1 stop23h 58m

Sydney Kingsford Smith

Mon 3/16

11:20 am-7:42 pm

1 stop23h 22m

$1,056

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/16

6:10 am-8:30 am

2 stops34h 20m

Sydney Kingsford Smith

Tue 2/24

2:15 pm-12:24 am

2 stops26h 09m

$1,069

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/16

6:55 am-8:30 am

2 stops33h 35m

Sydney Kingsford Smith

Tue 2/24

10:40 am-8:49 pm

2 stops26h 09m

$1,070

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 3/7

3:59 pm-6:55 am

1 stop22h 56m

Sydney Kingsford Smith

Sun 3/15

11:20 am-7:42 pm

1 stop23h 22m

$1,111

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/24

7:00 pm-9:00 am

1 stop23h 00m

Sydney Kingsford Smith

Fri 4/10

9:10 am-6:54 pm

1 stop23h 44m

$1,120

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 2/16

2:16 pm-9:00 am

1 stop26h 44m

Sydney Kingsford Smith

Sat 2/28

2:05 pm-9:44 pm

1 stop23h 39m

$1,121

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 3/13

2:18 pm-7:25 am

1 stop26h 07m

Sydney Kingsford Smith

Sun 3/22

9:25 pm-8:08 am

1 stop25h 43m

$1,122

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 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

Layovers

What is the typical price of a round-trip flight between Philadelphia and Sydney?

What is the cheapest month to fly to Sydney?

In general, February is the cheapest month to fly from Philadelphia to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,046. If you are unable to visit Sydney during the month of February, then departing from Philadelphia during the month September is also very affordable. Most momondo users find prices during this month for around $1,156.

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 $1,436 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Philadelphia for as low as $1,050 on momondo.

Can stopping save me money on Philadelphia to Sydney flights?

You could potentially save up to 9% 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 round-trip 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	23h 00m
Direct flights	None

The fastest flight from Philadelphia to Sydney takes 23h 00m

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?
Philadelphia and Sydney Kingsford Smith are 9863.8 mi apart from one another. Flights usually cover this in 23h 00m, depending on flying conditions and air traffic around both airports.
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 refreshed on a daily basis.
How many operators does momondo search for flights from Philadelphia Airport to Sydney Kingsford Smith Airport?
As of January 2026, there are 7 operators available to choose from for flights from Philadelphia Airport to Sydney Kingsford Smith Airport.
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 layovers. 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Philadelphia to Sydney?
momondo data reveals that the most frequently booked airline on the route from Philadelphia to Sydney is United Airlines, representing 29% of all bookings. The subsequent popular airlines are Qantas Airways at 20%, Fiji Airways at 19%, and American Airlines at 14%.

Best airlines flying from Philadelphia to Sydney

Compare and see reviews for airlines that fly from Philadelphia to Sydney with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $535	Free Cancellation	Rating 7.9 8,086 reviews	Search Delta flights
United Airlines	PriceFrom $859	Free Cancellation	Rating 7.4 9,189 reviews	Search United Airlines flights
Air Canada	PriceFrom $941	Free Cancellation	Rating 7.1 10,644 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,044	Free Cancellation	Rating 7.5 973 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,220	Free Cancellation	Rating 8.0 572 reviews	Search Air New Zealand flights
Fiji Airways	PriceFrom $1,288	Free Cancellation	Rating 8.0 218 reviews	Search Fiji Airways flights
American Airlines	PriceFrom $1,350	Free Cancellation	Rating 7.2 11,169 reviews	Search American Airlines flights

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Why use momondo?

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

Finding the right flight to Sydney 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 Sydney quick and easy, saving you time and money.

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?

Once you have performed a search for Philadelphia to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Philadelphia to Sydney right now. Can momondo alert me if prices change?

Price alerts on flights to Sydney from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Philadelphia to Sydney from $566

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 Sydney departing on 5/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Philadelphia to Sydney

Our best American Airlines deals on Philadelphia to Sydney flight tickets

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Our best Delta deals on Philadelphia to Sydney flight tickets

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How to get the cheapest flight ticket from Philadelphia to Sydney

What is the typical price of a round-trip flight between Philadelphia and Sydney?

What is the cheapest month to fly to Sydney?

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

Can stopping save me money on Philadelphia to Sydney flights?

You could potentially save up to 9% on your flight if you consider stops on a Philadelphia to Sydney flight.

How have Philadelphia to Sydney flight prices changed over time?

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

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

What airlines fly to Sydney?

Which airport is the most popular layover for flights between Philadelphia and Sydney?

Los Angeles (LAX) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Philadelphia to Sydney?

Flights via Houston (IAH) offer the lowest average round-trip price of $880.

Which layover airport has the shortest travel time from Philadelphia to Sydney?

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 22h 46m.

Which layover airport has the shortest connection time from Philadelphia to Sydney?

San Francisco (SFO) has the shortest average layover time for this route: 1h 47m.

When to book flights from Philadelphia to Sydney

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

Direct flights

How far is Philadelphia to Sydney Kingsford Smith by plane?

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

How many operators does momondo search for flights from Philadelphia Airport to Sydney Kingsford Smith Airport?

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

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

What is the most popular airline from Philadelphia to Sydney?

Best airlines flying from Philadelphia to Sydney

Compare and see reviews for airlines that fly from Philadelphia to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

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

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

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

I’m not ready to book a flight from Philadelphia to Sydney right now. Can momondo alert me if prices change?

An easier way to manage your Sydney 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.

Find better results for your trip to Australia

Airports servicing New South Wales