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.

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 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.

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

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

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

American Airlines, ANA, and Air Canada 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 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.

$726 Cheap Flights from Philadelphia to Sydney in 2026

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2:30 pm - 9:00 am

PHL

SYD

26h 30m

1 stop

7:15 pm - 2:37 pm

SYD

PHL

35h 22m

2 stops

$963Qantas Airways

ter, fev 10 - ter, fev 17

2:16 pm - 8:50 pm

PHL

SYD

38h 34m

2 stops

11:20 am - 7:42 pm

SYD

PHL

23h 22m

1 stop

$973Qantas Airways

seg, mar 2 - seg, mar 16

2:16 pm - 8:50 pm

PHL

SYD

38h 34m

2 stops

11:20 am - 7:42 pm

SYD

PHL

23h 22m

1 stop

$975Qantas Airways

seg, mar 2 - seg, mar 16

8:36 am - 6:10 am

PHL

SYD

29h 34m

1 stop

7:15 pm - 8:41 pm

SYD

PHL

41h 26m

2 stops

$1,015Qantas Airways

dom, fev 1 - ter, fev 10

3:54 pm - 8:50 pm

PHL

SYD

37h 56m

2 stops

11:20 am - 7:42 pm

SYD

PHL

23h 22m

1 stop

$1,033Qantas Airways

ter, mar 10 - sex, mar 20

2:30 pm - 9:00 am

PHL

SYD

26h 30m

1 stop

11:20 am - 7:48 pm

SYD

PHL

24h 28m

1 stop

$1,046Qantas Airways

ter, fev 10 - ter, fev 17

2:16 pm - 9:00 am

PHL

SYD

26h 44m

1 stop

2:05 pm - 8:49 pm

SYD

PHL

22h 44m

1 stop

$1,047Qantas Airways

seg, fev 23 - ter, mar 3

2:16 pm - 9:00 am

PHL

SYD

26h 44m

1 stop

9:25 pm - 8:08 am

SYD

PHL

26h 43m

1 stop

$1,048Qantas Airways

seg, fev 23 - ter, mar 3

7:00 pm - 9:00 am

PHL

SYD

23h 00m

1 stop

11:20 am - 7:42 pm

SYD

PHL

23h 22m

1 stop

$1,049Qantas Airways

seg, mar 9 - seg, mar 16

3:55 pm - 9:00 am

PHL

SYD

25h 05m

2 stops

11:20 am - 7:48 pm

SYD

PHL

24h 28m

2 stops

$1,053American Airlines

seg, fev 23 - ter, mar 3

American Airlines flights from Philadelphia to Sydney

Our best American Airlines deals on Philadelphia to Sydney flight tickets

American Airlines

Feb 23

PHL3:55 pmPhiladelphia

25h 05m

2 stops

SYD9:00 amSydney Kingsford Smith

Mar 3

SYD11:20 amSydney Kingsford Smith

24h 28m

2 stops

PHL7:48 pmPhiladelphia

$1,053

American Airlines

Feb 23

PHL9:24 amPhiladelphia

31h 36m

1 stop

SYD9:00 amSydney Kingsford Smith

Mar 2

SYD11:20 amSydney Kingsford Smith

22h 24m

2 stops

PHL5:44 pmPhiladelphia

$1,054

American Airlines

Mar 10

PHL5:17 pmPhiladelphia

24h 43m

2 stops

SYD9:00 amSydney Kingsford Smith

Mar 20

SYD11:20 amSydney Kingsford Smith

23h 20m

2 stops

PHL7:40 pmPhiladelphia

$1,128

Qantas Airways flights from Philadelphia to Sydney

Our best Qantas Airways deals on Philadelphia to Sydney flight tickets

Qantas Airways

Feb 10

PHL2:30 pmPhiladelphia

26h 30m

1 stop

SYD9:00 amSydney Kingsford Smith

Feb 17

SYD7:15 pmSydney Kingsford Smith

35h 22m

2 stops

PHL2:37 pmPhiladelphia

$963

Qantas Airways

Mar 2

PHL2:16 pmPhiladelphia

38h 34m

2 stops

SYD8:50 pmSydney Kingsford Smith

Mar 16

SYD11:20 amSydney Kingsford Smith

23h 22m

1 stop

PHL7:42 pmPhiladelphia

$973

Qantas Airways

Mar 2

PHL2:16 pmPhiladelphia

38h 34m

2 stops

SYD8:50 pmSydney Kingsford Smith

Mar 16

SYD11:20 amSydney Kingsford Smith

23h 22m

1 stop

PHL7:42 pmPhiladelphia

$975

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

ter 2/10

2:30 pm-9:00 am

1 stop26h 30m

Sydney Kingsford Smith

ter 2/17

7:15 pm-2:37 pm

2 stops35h 22m

$963

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

seg 3/2

2:16 pm-8:50 pm

2 stops38h 34m

Sydney Kingsford Smith

seg 3/16

11:20 am-7:42 pm

1 stop23h 22m

$973

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

seg 3/2

2:16 pm-8:50 pm

2 stops38h 34m

Sydney Kingsford Smith

seg 3/16

11:20 am-7:42 pm

1 stop23h 22m

$975

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

dom 2/1

8:36 am-6:10 am

1 stop29h 34m

Sydney Kingsford Smith

ter 2/10

7:15 pm-8:41 pm

2 stops41h 26m

$1,015

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

ter 3/10

3:54 pm-8:50 pm

2 stops37h 56m

Sydney Kingsford Smith

sex 3/20

11:20 am-7:42 pm

1 stop23h 22m

$1,033

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

ter 2/10

2:30 pm-9:00 am

1 stop26h 30m

Sydney Kingsford Smith

ter 2/17

11:20 am-7:48 pm

1 stop24h 28m

$1,046

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

seg 2/23

2:16 pm-9:00 am

1 stop26h 44m

Sydney Kingsford Smith

ter 3/3

2:05 pm-8:49 pm

1 stop22h 44m

$1,047

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

seg 2/23

2:16 pm-9:00 am

1 stop26h 44m

Sydney Kingsford Smith

ter 3/3

9:25 pm-8:08 am

1 stop26h 43m

$1,048

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

seg 3/9

7:00 pm-9:00 am

1 stop23h 00m

Sydney Kingsford Smith

seg 3/16

11:20 am-7:42 pm

1 stop23h 22m

$1,049

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

seg 2/23

3:55 pm-9:00 am

2 stops25h 05m

Sydney Kingsford Smith

ter 3/3

11:20 am-7:48 pm

2 stops24h 28m

$1,053

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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 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 $1,219.

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 $1,439 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 5% 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	24h 25m
Direct flights	None

The fastest flight from Philadelphia to Sydney takes 24h 25m

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 24h 25m, 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 21%, Fiji Airways at 19%, and American Airlines at 13%.

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 8,112 reviews	Search Delta flights
United Airlines	PriceFrom $859	Free Cancellation	Rating 7.4 9,193 reviews	Search United Airlines flights
Air Canada	PriceFrom $941	Free Cancellation	Rating 7.1 10,652 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,044	Free Cancellation	Rating 7.5 975 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,220	Free Cancellation	Rating 8.0 574 reviews	Search Air New Zealand flights
Fiji Airways	PriceFrom $1,288	Free Cancellation	Rating 8.0 221 reviews	Search Fiji Airways flights
American Airlines	PriceFrom $1,350	Free Cancellation	Rating 7.2 11,193 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 $726

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 2/6. 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

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 5% 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?

American Airlines, ANA, and Air Canada 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