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

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

What airlines fly to Philadelphia?

Delta, United Airlines and Air Canada are the top three most popular airlines that fly to Philadelphia from Sydney according to our data. Delta is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 4 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Sydney Kingsford Smith Airport to Philadelphia Airport are refreshed on a daily basis.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Sydney Kingsford Smith Airport to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$765 Cheap Flights from Sydney to Philadelphia in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $1,814 to $1,518. The lowest price recently found on this route was $1,192.

1 adult

0 bags

Find the cheapest flights from Sydney to Philadelphia

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:15 pm - 8:59 am

SYD

PHL

57h 44m

3 stops

5:26 am - 11:50 am

PHL

SYD

40h 24m

3 stops

$1,192Multiple Airlines

Mon, Jun 1 - Sun, Jun 14

5:50 pm - 11:39 am

SYD

PHL

31h 49m

2 stops

11:06 am - 7:30 am

PHL

SYD

30h 24m

2 stops

$1,225Multiple Airlines

Wed, Jun 3 - Wed, Jun 10

5:50 pm - 11:39 am

SYD

PHL

31h 49m

2 stops

11:06 am - 7:30 am

PHL

SYD

30h 24m

2 stops

$1,226Multiple Airlines

Wed, Jun 3 - Wed, Jun 17

5:50 pm - 6:21 am

SYD

PHL

26h 31m

2 stops

6:30 am - 7:30 am

PHL

SYD

35h 00m

2 stops

$1,303Multiple Airlines

Mon, Jun 1 - Mon, Jun 15

5:50 pm - 9:10 am

SYD

PHL

29h 20m

1 stop

11:06 am - 7:30 am

PHL

SYD

30h 24m

2 stops

$1,316Multiple Airlines

Wed, Jun 3 - Wed, Jun 10

5:50 pm - 9:10 am

SYD

PHL

29h 20m

1 stop

5:26 am - 7:30 am

PHL

SYD

36h 04m

2 stops

$1,333Multiple Airlines

Mon, Jun 1 - Sun, Jun 14

5:50 pm - 9:10 am

SYD

PHL

29h 20m

1 stop

6:30 am - 7:30 am

PHL

SYD

35h 00m

2 stops

$1,340Multiple Airlines

Mon, Jun 1 - Mon, Jun 15

5:50 pm - 9:10 am

SYD

PHL

29h 20m

1 stop

11:06 am - 7:30 am

PHL

SYD

30h 24m

2 stops

$1,345Multiple Airlines

Wed, Jun 3 - Wed, Jun 17

9:10 am - 12:40 am

SYD

PHL

53h 30m

2 stops

5:26 am - 7:05 am

PHL

SYD

35h 39m

2 stops

$1,359Multiple Airlines

Mon, Jun 1 - Sun, Jun 14

11:45 am - 2:08 pm

SYD

PHL

40h 23m

2 stops

11:30 am - 9:25 am

PHL

SYD

31h 55m

2 stops

$1,637ANA

Wed, Aug 26 - Mon, Aug 31

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United Airlines flights from Sydney to Philadelphia

Our best United Airlines deals on Sydney to Philadelphia flight tickets

United Airlines

Jun 3

SYD10:20 amSydney Kingsford Smith

29h 09m

1 stop

PHL1:29 amPhiladelphia

Jun 17

PHL6:23 pmPhiladelphia

22h 32m

1 stop

SYD6:55 amSydney Kingsford Smith

$1,772

United Airlines

Jun 3

SYD10:20 amSydney Kingsford Smith

29h 09m

1 stop

PHL1:29 amPhiladelphia

Jun 10

PHL6:23 pmPhiladelphia

22h 32m

1 stop

SYD6:55 amSydney Kingsford Smith

$1,773

United Airlines

May 7

SYD9:30 amSydney Kingsford Smith

23h 28m

2 stops

PHL6:58 pmPhiladelphia

May 10

PHL1:20 pmPhiladelphia

27h 35m

3 stops

SYD6:55 amSydney Kingsford Smith

$2,562

Qantas Airways flights from Sydney to Philadelphia

Our best Qantas Airways deals on Sydney to Philadelphia flight tickets

Qantas Airways

Aug 26

SYD12:00 pmSydney Kingsford Smith

20h 48m

1 stop

PHL6:48 pmPhiladelphia

Aug 31

PHL3:06 pmPhiladelphia

61h 24m

2 stops

SYD6:30 pmSydney Kingsford Smith

$1,869

Qantas Airways

Jun 18

SYD9:10 amSydney Kingsford Smith

23h 25m

1 stop

PHL6:35 pmPhiladelphia

Jun 28

PHL5:40 pmPhiladelphia

23h 25m

1 stop

SYD7:05 amSydney Kingsford Smith

$1,882

Qantas Airways

Jun 18

SYD9:10 amSydney Kingsford Smith

23h 25m

1 stop

PHL6:35 pmPhiladelphia

Jun 28

PHL5:40 pmPhiladelphia

23h 25m

1 stop

SYD7:05 amSydney Kingsford Smith

$1,887

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 6/1

1:15 pm-8:59 am

3 stops57h 44m

Philadelphia

Sun 6/14

5:26 am-11:50 am

3 stops40h 24m

$1,192

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Wed 6/3

5:50 pm-11:39 am

2 stops31h 49m

Philadelphia

Wed 6/10

11:06 am-7:30 am

2 stops30h 24m

$1,225

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Wed 6/3

5:50 pm-11:39 am

2 stops31h 49m

Philadelphia

Wed 6/17

11:06 am-7:30 am

2 stops30h 24m

$1,226

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 6/1

5:50 pm-6:21 am

2 stops26h 31m

Philadelphia

Mon 6/15

6:30 am-7:30 am

2 stops35h 00m

$1,303

Quickest round-trip

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Wed 6/3

5:50 pm-9:10 am

1 stop29h 20m

Philadelphia

Wed 6/10

11:06 am-7:30 am

2 stops30h 24m

$1,316

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 6/1

5:50 pm-9:10 am

1 stop29h 20m

Philadelphia

Sun 6/14

5:26 am-7:30 am

2 stops36h 04m

$1,333

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 6/1

5:50 pm-9:10 am

1 stop29h 20m

Philadelphia

Mon 6/15

6:30 am-7:30 am

2 stops35h 00m

$1,340

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Wed 6/3

5:50 pm-9:10 am

1 stop29h 20m

Philadelphia

Wed 6/17

11:06 am-7:30 am

2 stops30h 24m

$1,345

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 6/1

9:10 am-12:40 am

2 stops53h 30m

Philadelphia

Sun 6/14

5:26 am-7:05 am

2 stops35h 39m

$1,359

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Wed 8/26

11:45 am-2:08 pm

2 stops40h 23m

Philadelphia

Mon 8/31

11:30 am-9:25 am

2 stops31h 55m

$1,637

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from Sydney to Philadelphia

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

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

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from Sydney is in October. Flight prices, which tend to average around $1,135, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Philadelphia, with average flight prices from Sydney averaging around $1,152.

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

You are more likely to see cheaper flights to Philadelphia from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $1,470 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Sydney for as low as $1,153 on momondo.

Can stopping save me money on Sydney to Philadelphia flights?

You could potentially save up to 22% on your flight if you consider stops on a Sydney to Philadelphia flight.

How have Sydney to Philadelphia flight prices changed over time?

As of April 2026, prices for Sydney to Philadelphia flights are approximately 10% cheaper when compared to flights at the same time last year.

When to book flights from Sydney to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Sydney to Philadelphia (SYD to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to Philadelphia

Fastest flight time	23h 44m
Direct flights	None

The fastest flight from Sydney to Philadelphia takes 23h 44m

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

Search flight deals

Frequently asked questions about flying from Sydney to Philadelphia

How far is Sydney Kingsford Smith to Philadelphia by plane?
A flight from Sydney Kingsford Smith to Philadelphia will travel around 9863.8 mi. In terms of flight time, this usually takes a little over 23h 44m.
When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Philadelphia Airport?
Prices for flights from Sydney Kingsford Smith Airport to Philadelphia Airport are refreshed on a daily basis.
How old do you have to be to fly from Sydney Kingsford Smith Airport to Philadelphia Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Sydney Kingsford Smith Airport to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sydney to Philadelphia. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Philadelphia from Sydney on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Sydney to Philadelphia 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 Sydney to Philadelphia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from Sydney and alert you when they change.