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

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

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

Los Angeles (LAX) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

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 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 connection time from Philadelphia to Sydney?

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

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.

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 August 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.

$452 Cheap Flights from Philadelphia to Sydney (PHL-SYD) in 2025

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Find the cheapest flights from Philadelphia to Sydney (PHL-SYD)

Round-trip

One-way

Last minute

Cheap round-trip flights

12:47 pm - 6:35 amPHL-SYD

27h 48m2 stops

10:25 am - 7:47 pmSYD-PHL

24h 22m2 stops

$852Delta

Find Deal

mié., sep. 24 - mié., oct. 8

6:45 am - 6:35 amPHL-SYD

33h 50m2 stops

10:25 am - 6:05 pmSYD-PHL

22h 40m2 stops

$902Delta

Find Deal

mié., sep. 24 - sáb., oct. 11

9:00 am - 6:35 amPHL-SYD

31h 35m2 stops

9:25 am - 10:20 pmSYD-PHL

26h 55m2 stops

$952Delta

Find Deal

vie., ago. 29 - vie., sep. 5

5:15 am - 7:05 amPHL-SYD

35h 50m2 stops

12:10 pm - 12:57 amSYD-PHL

26h 47m2 stops

$1,019

Find Deal

jue., sep. 4 - jue., sep. 18

6:43 pm - 12:45 pmPHL-SYD

27h 02m2 stops

2:10 pm - 9:40 pmSYD-PHL

23h 30m2 stops

$1,137Fiji Airways

Find Deal

sáb., oct. 25 - mar., nov. 11

6:43 pm - 12:45 pmPHL-SYD

27h 02m2 stops

2:10 pm - 9:40 pmSYD-PHL

23h 30m2 stops

$1,138Fiji Airways

Find Deal

sáb., oct. 25 - mar., nov. 11

5:35 pm - 8:00 amPHL-SYD

48h 25m2 stops

5:45 pm - 5:55 amSYD-PHL

26h 10m1 stop

$1,183

Find Deal

sáb., ago. 30 - lun., sep. 15

12:22 pm - 8:15 pmPHL-SYD

39h 53m2 stops

12:25 pm - 5:29 pmSYD-PHL

45h 04m2 stops

$1,224ANA

Find Deal

mar., nov. 11 - mar., nov. 18

3:25 pm - 8:20 amPHL-SYD

49h 55m2 stops

11:20 am - 2:47 pmSYD-PHL

43h 27m2 stops

$1,238Air Canada

Find Deal

lun., oct. 20 - mar., nov. 25

3:25 pm - 8:20 amPHL-SYD

49h 55m2 stops

11:20 am - 2:47 pmSYD-PHL

43h 27m3 stops

$1,245Air Canada

Find Deal

lun., oct. 20 - mar., nov. 25

Fiji Airways flights from Philadelphia to Sydney

Our best Fiji Airways deals on Philadelphia to Sydney flight tickets

Fiji Airways

Oct 25

PHL6:43 pmPhiladelphia

27h 02m

2 stops

SYD12:45 pmSydney Kingsford Smith

Nov 11

SYD2:10 pmSydney Kingsford Smith

23h 30m

2 stops

PHL9:40 pmPhiladelphia

$1,137

Find similar

Fiji Airways

Oct 25

PHL6:43 pmPhiladelphia

27h 02m

2 stops

SYD12:45 pmSydney Kingsford Smith

Nov 11

SYD2:10 pmSydney Kingsford Smith

23h 30m

2 stops

PHL9:40 pmPhiladelphia

$1,138

Find similar

Fiji Airways

Oct 25

PHL6:43 pmPhiladelphia

27h 02m

2 stops

SYD12:45 pmSydney Kingsford Smith

Nov 15

SYD2:30 pmSydney Kingsford Smith

23h 10m

2 stops

PHL9:40 pmPhiladelphia

$1,176

Find similar

Delta flights from Philadelphia to Sydney

Our best Delta deals on Philadelphia to Sydney flight tickets

Delta

Sep 24

PHL12:47 pmPhiladelphia

27h 48m

2 stops

SYD6:35 amSydney Kingsford Smith

Oct 8

SYD10:25 amSydney Kingsford Smith

24h 22m

2 stops

PHL7:47 pmPhiladelphia

$852

Find similar

Delta

Sep 24

PHL6:45 amPhiladelphia

33h 50m

2 stops

SYD6:35 amSydney Kingsford Smith

Oct 11

SYD10:25 amSydney Kingsford Smith

22h 40m

2 stops

PHL6:05 pmPhiladelphia

$902

Find similar

Delta

Aug 29

PHL9:00 amPhiladelphia

31h 35m

2 stops

SYD6:35 amSydney Kingsford Smith

Sep 5

SYD9:25 amSydney Kingsford Smith

26h 55m

2 stops

PHL10:20 pmPhiladelphia

$952

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

mié. 9/24

12:47 pm-6:35 am

2 stops27h 48m

Sydney Kingsford Smith

mié. 10/8

10:25 am-7:47 pm

2 stops24h 22m

$852

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

mié. 9/24

6:45 am-6:35 am

2 stops33h 50m

Sydney Kingsford Smith

sáb. 10/11

10:25 am-6:05 pm

2 stops22h 40m

$902

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

vie. 8/29

9:00 am-6:35 am

2 stops31h 35m

Sydney Kingsford Smith

vie. 9/5

9:25 am-10:20 pm

2 stops26h 55m

$952

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

jue. 9/4

5:15 am-7:05 am

2 stops35h 50m

Sydney Kingsford Smith

jue. 9/18

12:10 pm-12:57 am

2 stops26h 47m

$1,019

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

sáb. 10/25

6:43 pm-12:45 pm

2 stops27h 02m

Sydney Kingsford Smith

mar. 11/11

2:10 pm-9:40 pm

2 stops23h 30m

$1,137

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

sáb. 10/25

6:43 pm-12:45 pm

2 stops27h 02m

Sydney Kingsford Smith

mar. 11/11

2:10 pm-9:40 pm

2 stops23h 30m

$1,138

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

sáb. 8/30

5:35 pm-8:00 am

2 stops48h 25m

Sydney Kingsford Smith

lun. 9/15

5:45 pm-5:55 am

1 stop26h 10m

$1,183

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

mar. 11/11

12:22 pm-8:15 pm

2 stops39h 53m

Sydney Kingsford Smith

mar. 11/18

12:25 pm-5:29 pm

2 stops45h 04m

$1,224

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 10/20

3:25 pm-8:20 am

2 stops49h 55m

Sydney Kingsford Smith

mar. 11/25

11:20 am-2:47 pm

2 stops43h 27m

$1,238

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

lun. 10/20

3:25 pm-8:20 am

2 stops49h 55m

Sydney Kingsford Smith

mar. 11/25

11:20 am-2:47 pm

3 stops43h 27m

$1,245

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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 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 $1,153. 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 $1,157.

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 $1,509 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 $1,138 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?

As of August 2025, prices for Philadelphia to Sydney flights are approximately 34% 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.

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 27h 01m, 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 August 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 28% of all bookings. The subsequent popular airlines are American Airlines at 20%, Qantas Airways at 16%, and Fiji Airways 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 $833	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
United Airlines	PriceFrom $860	Free Cancellation	Rating 7.4 8,930 reviews	Search United Airlines flights
Air Canada	PriceFrom $945	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,220	Free Cancellation	Rating 8.0 504 reviews	Search Air New Zealand flights
Qantas Airways	PriceFrom $1,294	Free Cancellation	Rating 7.5 898 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $1,319	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Fiji Airways	PriceFrom $1,378	Free Cancellation	Rating 8.0 204 reviews	Search Fiji Airways 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 $452

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 10/18. 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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Big names and deals

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Fiji Airways flights from Philadelphia to Sydney

Our best Fiji Airways deals on Philadelphia to Sydney flight tickets

Delta flights from Philadelphia to Sydney

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

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

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 25% 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 August 2025, prices for Philadelphia to Sydney flights are approximately 34% cheaper when compared to flights at the same time last year.

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

Fiji Airways, ANA, and Alaska 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: 67% 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