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 59m.

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

Los Angeles (LAX) was the most common stop: 71% of momondo users choosing 1-stop flights on this route connected there.

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 39m.

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

Qantas Airways is the most popular carrier operating from Philadelphia to Sydney Kingsford Smith

What airlines fly to Sydney?

Qantas Airways, United Airlines and Air Canada 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 39% 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.

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 February 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.

$512 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 typical for flights on this route. Typical prices usually range from $967 to $1,584. The lowest price recently found on this route was $1,038.

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7:00 pm - 9:00 am

PHL

SYD

23h 00m

1 stop

1:05 pm - 12:54 am

SYD

PHL

26h 49m

1 stop

$1,038Qantas Airways

Sun, Mar 8 - Wed, Mar 18

2:18 pm - 9:00 am

PHL

SYD

27h 42m

1 stop

1:05 pm - 7:25 pm

SYD

PHL

21h 20m

1 stop

$1,039Qantas Airways

Tue, Mar 17 - Tue, Mar 24

7:00 pm - 9:00 am

PHL

SYD

23h 00m

1 stop

11:20 am - 10:59 pm

SYD

PHL

26h 39m

1 stop

$1,042American Airlines

Sun, Mar 8 - Mon, Mar 23

5:15 pm - 9:00 am

PHL

SYD

24h 45m

2 stops

11:20 am - 8:06 pm

SYD

PHL

23h 46m

2 stops

$1,045American Airlines

Sun, Mar 8 - Wed, Mar 18

2:16 pm - 9:00 am

PHL

SYD

26h 44m

1 stop

11:20 am - 7:42 pm

SYD

PHL

23h 22m

1 stop

$1,050Qantas Airways

Tue, Mar 3 - Tue, Mar 17

5:17 pm - 6:55 am

PHL

SYD

22h 38m

1 stop

11:20 am - 7:42 pm

SYD

PHL

23h 22m

1 stop

$1,051Qantas Airways

Tue, Mar 17 - Tue, Mar 24

10:45 am - 9:00 am

PHL

SYD

30h 15m

1 stop

11:20 am - 8:10 pm

SYD

PHL

23h 50m

2 stops

$1,057American Airlines

Tue, Mar 3 - Tue, Mar 17

7:00 pm - 9:00 am

PHL

SYD

23h 00m

1 stop

10:10 am - 5:51 am

SYD

PHL

34h 41m

1 stop

$1,067Qantas Airways

Mon, Mar 16 - Mon, Mar 30

6:10 am - 6:55 am

PHL

SYD

34h 45m

2 stops

9:30 am - 9:28 pm

SYD

PHL

25h 58m

2 stops

$1,073United Airlines

Sun, May 17 - Sun, May 24

12:59 pm - 7:25 am

PHL

SYD

27h 26m

2 stops

9:40 am - 8:52 pm

SYD

PHL

26h 12m

2 stops

$1,076Delta

Sun, Mar 8 - Mon, Mar 23

Qatar Airways flights from Philadelphia to Sydney

Our best Qatar Airways deals on Philadelphia to Sydney flight tickets

Qatar Airways

Feb 23

PHL7:40 pmPhiladelphia

31h 10m

1 stop

SYD6:50 pmSydney Kingsford Smith

Mar 3

SYD9:40 pmSydney Kingsford Smith

51h 20m

1 stop

PHL9:00 amPhiladelphia

$1,627

Qatar Airways

Feb 23

PHL7:40 pmPhiladelphia

31h 10m

1 stop

SYD6:50 pmSydney Kingsford Smith

Mar 3

SYD9:40 pmSydney Kingsford Smith

51h 20m

1 stop

PHL9:00 amPhiladelphia

$1,628

Qatar Airways

Mar 1

PHL7:40 pmPhiladelphia

31h 10m

1 stop

SYD6:50 pmSydney Kingsford Smith

Mar 14

SYD9:40 pmSydney Kingsford Smith

50h 20m

1 stop

PHL9:00 amPhiladelphia

$1,666

Qantas Airways flights from Philadelphia to Sydney

Our best Qantas Airways deals on Philadelphia to Sydney flight tickets

Qantas Airways

Mar 8

PHL7:00 pmPhiladelphia

23h 00m

1 stop

SYD9:00 amSydney Kingsford Smith

Mar 18

SYD1:05 pmSydney Kingsford Smith

26h 49m

1 stop

PHL12:54 amPhiladelphia

$1,038

Qantas Airways

Mar 17

PHL2:18 pmPhiladelphia

27h 42m

1 stop

SYD9:00 amSydney Kingsford Smith

Mar 24

SYD1:05 pmSydney Kingsford Smith

21h 20m

1 stop

PHL7:25 pmPhiladelphia

$1,039

Qantas Airways

Mar 3

PHL2:16 pmPhiladelphia

26h 44m

1 stop

SYD9:00 amSydney Kingsford Smith

Mar 17

SYD11:20 amSydney Kingsford Smith

23h 22m

1 stop

PHL7:42 pmPhiladelphia

$1,050

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/8

7:00 pm-9:00 am

1 stop23h 00m

Sydney Kingsford Smith

Wed 3/18

1:05 pm-12:54 am

1 stop26h 49m

$1,038

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/17

2:18 pm-9:00 am

1 stop27h 42m

Sydney Kingsford Smith

Tue 3/24

1:05 pm-7:25 pm

1 stop21h 20m

$1,039

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/8

7:00 pm-9:00 am

1 stop23h 00m

Sydney Kingsford Smith

Mon 3/23

11:20 am-10:59 pm

1 stop26h 39m

$1,042

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/8

5:15 pm-9:00 am

2 stops24h 45m

Sydney Kingsford Smith

Wed 3/18

11:20 am-8:06 pm

2 stops23h 46m

$1,045

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/3

2:16 pm-9:00 am

1 stop26h 44m

Sydney Kingsford Smith

Tue 3/17

11:20 am-7:42 pm

1 stop23h 22m

$1,050

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/17

5:17 pm-6:55 am

1 stop22h 38m

Sydney Kingsford Smith

Tue 3/24

11:20 am-7:42 pm

1 stop23h 22m

$1,051

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 3/3

10:45 am-9:00 am

1 stop30h 15m

Sydney Kingsford Smith

Tue 3/17

11:20 am-8:10 pm

2 stops23h 50m

$1,057

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 3/16

7:00 pm-9:00 am

1 stop23h 00m

Sydney Kingsford Smith

Mon 3/30

10:10 am-5:51 am

1 stop34h 41m

$1,067

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 5/17

6:10 am-6:55 am

2 stops34h 45m

Sydney Kingsford Smith

Sun 5/24

9:30 am-9:28 pm

2 stops25h 58m

$1,073

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 3/8

12:59 pm-7:25 am

2 stops27h 26m

Sydney Kingsford Smith

Mon 3/23

9:40 am-8:52 pm

2 stops26h 12m

$1,076

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, April 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 $1,045. If you are unable to visit Sydney during the month of April, then departing from Philadelphia during the month February is also very affordable. Most momondo users find prices during this month for around $1,071.

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 $1,454 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 $991 on momondo.

Can stopping save me money on Philadelphia to Sydney flights?

You could potentially save up to 25% 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 February 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 Qantas Airways, representing 24% of all bookings. The subsequent popular airlines are United Airlines at 21%, Fiji Airways at 20%, 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 8,223 reviews	Search Delta flights
United Airlines	PriceFrom $843	Free Cancellation	Rating 7.4 9,331 reviews	Search United Airlines flights
Air Canada	PriceFrom $941	Free Cancellation	Rating 7.1 10,733 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,044	Free Cancellation	Rating 7.5 995 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $1,198	Free Cancellation	Rating 7.2 11,325 reviews	Search American Airlines flights
Fiji Airways	PriceFrom $1,288	Free Cancellation	Rating 8.0 226 reviews	Search Fiji Airways flights
Air New Zealand	PriceFrom $1,418	Free Cancellation	Rating 8.0 590 reviews	Search Air New Zealand 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.

An easier way to manage your Sydney trip

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Cheap flights from Philadelphia to Sydney from $512

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 4/15. 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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Qatar Airways flights from Philadelphia to Sydney

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Our best Qantas Airways 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?

How have Philadelphia to Sydney flight prices changed over time?

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

What airlines fly to Sydney?

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

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

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

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

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

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

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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