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 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 39% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 10 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.

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

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

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

Los Angeles (LAX) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

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 November 2025, 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.

$608 Cheap Flights from Philadelphia to Sydney in 2025/26

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3:35 pm - 6:10 amPHL-SYD

23h 35m1 stop

9:10 am - 5:55 pmSYD-PHL

22h 45m1 stop

$971Qantas Airways

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Tue, Mar 31 - Mon, Apr 20

3:45 pm - 9:00 amPHL-SYD

25h 15m1 stop

5:50 pm - 2:37 pmSYD-PHL

36h 47m2 stops

$972Qantas Airways

Find Deal

Tue, Dec 2 - Sat, Dec 6

4:03 pm - 7:35 amPHL-SYD

47h 32m2 stops

11:20 am - 5:18 pmSYD-PHL

21h 58m1 stop

$1,002Qantas Airways

Find Deal

Wed, Dec 10 - Mon, Dec 15

3:35 pm - 6:10 amPHL-SYD

23h 35m1 stop

9:10 am - 5:55 pmSYD-PHL

22h 45m1 stop

$1,011Qantas Airways

Find Deal

Tue, Mar 31 - Mon, Apr 20

2:30 pm - 9:00 amPHL-SYD

26h 30m1 stop

2:05 pm - 11:26 pmSYD-PHL

25h 21m1 stop

$1,020Qantas Airways

Find Deal

Sat, Jan 24 - Mon, Feb 9

6:45 pm - 9:00 amPHL-SYD

22h 15m1 stop

11:20 am - 8:05 pmSYD-PHL

24h 45m1 stop

$1,044American Airlines

Find Deal

Tue, Nov 25 - Wed, Dec 3

10:45 am - 6:55 amPHL-SYD

28h 10m1 stop

11:20 am - 5:18 pmSYD-PHL

21h 58m1 stop

$1,045Qantas Airways

Find Deal

Tue, Dec 9 - Tue, Dec 16

3:56 pm - 9:00 amPHL-SYD

25h 04m2 stops

11:20 am - 8:05 pmSYD-PHL

24h 45m1 stop

$1,048American Airlines

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Tue, Nov 25 - Wed, Dec 3

5:10 pm - 9:00 amPHL-SYD

23h 50m2 stops

11:20 am - 5:55 pmSYD-PHL

22h 35m2 stops

$1,049American Airlines

Find Deal

Wed, Nov 26 - Mon, Dec 15

5:19 pm - 8:05 amPHL-SYD

23h 46m1 stop

12:10 pm - 11:01 pmSYD-PHL

24h 51m1 stop

$1,051Multiple Airlines

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Tue, Mar 31 - Mon, Apr 20

American Airlines flights from Philadelphia to Sydney

Our best American Airlines deals on Philadelphia to Sydney flight tickets

American Airlines

Nov 25

PHL6:45 pmPhiladelphia

22h 15m

1 stop

SYD9:00 amSydney Kingsford Smith

Dec 3

SYD11:20 amSydney Kingsford Smith

24h 45m

1 stop

PHL8:05 pmPhiladelphia

$1,044

Find similar

American Airlines

Nov 25

PHL3:56 pmPhiladelphia

25h 04m

2 stops

SYD9:00 amSydney Kingsford Smith

Dec 3

SYD11:20 amSydney Kingsford Smith

24h 45m

1 stop

PHL8:05 pmPhiladelphia

$1,048

Find similar

American Airlines

Nov 26

PHL5:10 pmPhiladelphia

23h 50m

2 stops

SYD9:00 amSydney Kingsford Smith

Dec 15

SYD11:20 amSydney Kingsford Smith

22h 35m

2 stops

PHL5:55 pmPhiladelphia

$1,049

Find similar

Qantas Airways flights from Philadelphia to Sydney

Our best Qantas Airways deals on Philadelphia to Sydney flight tickets

Qantas Airways

Mar 31

PHL3:35 pmPhiladelphia

23h 35m

1 stop

SYD6:10 amSydney Kingsford Smith

Apr 20

SYD9:10 amSydney Kingsford Smith

22h 45m

1 stop

PHL5:55 pmPhiladelphia

$971

Find similar

Qantas Airways

Dec 2

PHL3:45 pmPhiladelphia

25h 15m

1 stop

SYD9:00 amSydney Kingsford Smith

Dec 6

SYD5:50 pmSydney Kingsford Smith

36h 47m

2 stops

PHL2:37 pmPhiladelphia

$972

Find similar

Qantas Airways

Dec 10

PHL4:03 pmPhiladelphia

47h 32m

2 stops

SYD7:35 amSydney Kingsford Smith

Dec 15

SYD11:20 amSydney Kingsford Smith

21h 58m

1 stop

PHL5:18 pmPhiladelphia

$1,002

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Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/31

3:35 pm-6:10 am

1 stop23h 35m

Sydney Kingsford Smith

Mon 4/20

9:10 am-5:55 pm

1 stop22h 45m

$971

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 12/2

3:45 pm-9:00 am

1 stop25h 15m

Sydney Kingsford Smith

Sat 12/6

5:50 pm-2:37 pm

2 stops36h 47m

$972

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 12/10

4:03 pm-7:35 am

2 stops47h 32m

Sydney Kingsford Smith

Mon 12/15

11:20 am-5:18 pm

1 stop21h 58m

$1,002

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/31

3:35 pm-6:10 am

1 stop23h 35m

Sydney Kingsford Smith

Mon 4/20

9:10 am-5:55 pm

1 stop22h 45m

$1,011

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 1/24

2:30 pm-9:00 am

1 stop26h 30m

Sydney Kingsford Smith

Mon 2/9

2:05 pm-11:26 pm

1 stop25h 21m

$1,020

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 11/25

6:45 pm-9:00 am

1 stop22h 15m

Sydney Kingsford Smith

Wed 12/3

11:20 am-8:05 pm

1 stop24h 45m

$1,044

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 12/9

10:45 am-6:55 am

1 stop28h 10m

Sydney Kingsford Smith

Tue 12/16

11:20 am-5:18 pm

1 stop21h 58m

$1,045

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 11/25

3:56 pm-9:00 am

2 stops25h 04m

Sydney Kingsford Smith

Wed 12/3

11:20 am-8:05 pm

1 stop24h 45m

$1,048

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 11/26

5:10 pm-9:00 am

2 stops23h 50m

Sydney Kingsford Smith

Mon 12/15

11:20 am-5:55 pm

2 stops22h 35m

$1,049

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/31

5:19 pm-8:05 am

1 stop23h 46m

Sydney Kingsford Smith

Mon 4/20

12:10 pm-11:01 pm

1 stop24h 51m

$1,051

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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 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 $1,093. 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 $1,127.

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

The cheapest day to depart from Philadelphia to Sydney is on a Sunday when prices can be found for as low as $1,373. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,659.

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

According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Philadelphia to Sydney in the morning for as low as $1,449. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $2,063. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,441 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 $1,155 on momondo.

Can stopping save me money on Philadelphia to Sydney flights?

You could potentially save up to 40% 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 59% 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 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

Direct flights	None

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

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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 22h 15m, 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 November 2025, 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 31% of all bookings. The subsequent popular airlines are Fiji Airways at 17%, Qantas Airways at 17%, and American Airlines at 15%.

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 8,007 reviews	Search Delta flights
United Airlines	PriceFrom $860	Free Cancellation	Rating 7.4 9,015 reviews	Search United Airlines flights
Air Canada	PriceFrom $941	Free Cancellation	Rating 7.1 10,444 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,220	Free Cancellation	Rating 8.0 526 reviews	Search Air New Zealand flights
Fiji Airways	PriceFrom $1,288	Free Cancellation	Rating 8.1 209 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $1,309	Free Cancellation	Rating 7.5 933 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $1,350	Free Cancellation	Rating 7.2 11,050 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 $608

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 1/21. 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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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

What is the cheapest month to fly to Sydney?

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

The cheapest day to depart from Philadelphia to Sydney is on a Sunday when prices can be found for as low as $1,373. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,659.

What is the cheapest time of day to depart on your flight 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 40% 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 59% cheaper when compared to flights at the same time last year.

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

Qantas Airways, American Airlines, and ANA 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: 50% 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

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