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Cheap flights from Philadelphia to Sydney from $712

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 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
10:05 am - 7:20 amPHL  Philadelphia-SYD Sydney Kingsford Smith
31h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
9:20 am - 9:32 pmSYD  Sydney Kingsford Smith-PHL Philadelphia
26h 12m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,210Air Canada
Tue, Sep 15 - Mon, Sep 21
Air Canada Logo
3:20 pm - 9:35 amPHL  Philadelphia-SYD Sydney Kingsford Smith
26h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
11:20 am - 2:44 pmSYD  Sydney Kingsford Smith-PHL Philadelphia
43h 24m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,215Air Canada
Tue, Nov 3 - Wed, Nov 18
Multiple Airlines Logo
8:41 am - 11:50 amPHL  Philadelphia-SYD Sydney Kingsford Smith
37h 09m3 stops Atlanta Hartsfield-Jackson Los Angeles Los Angeles Nadi
Multiple Airlines Logo
2:15 pm - 9:30 amSYD  Sydney Kingsford Smith-PHL Philadelphia
34h 15m3 stops Nadi Los Angeles Los Angeles Orlando
$1,223Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
10:54 am - 9:35 amPHL  Philadelphia-SYD Sydney Kingsford Smith
30h 41m3 stops Chicago O'Hare Intl Toronto Pearson Intl Vancouver Intl
Multiple Airlines Logo
11:20 am - 2:44 pmSYD  Sydney Kingsford Smith-PHL Philadelphia
43h 24m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,235Multiple Airlines
Wed, Nov 4 - Wed, Nov 11
Qantas Airways Logo
4:24 pm - 10:20 amPHL  Philadelphia-SYD Sydney Kingsford Smith
25h 56m2 stops Los Angeles Los Angeles Brisbane
Qantas Airways Logo
2:05 pm - 8:35 pmSYD  Sydney Kingsford Smith-PHL Philadelphia
22h 30m1 stop Dallas/Fort Worth
$1,267Qantas Airways
Mon, Feb 1 - Mon, Feb 22
Qantas Airways Logo
3:14 pm - 6:55 amPHL  Philadelphia-SYD Sydney Kingsford Smith
23h 41m1 stop Dallas/Fort Worth
Qantas Airways Logo
11:05 am - 8:32 pmSYD  Sydney Kingsford Smith-PHL Philadelphia
25h 27m2 stops Brisbane Los Angeles Los Angeles
$1,277Qantas Airways
Sun, Nov 8 - Wed, Nov 18
American Airlines Logo
3:12 pm - 7:05 amPHL  Philadelphia-SYD Sydney Kingsford Smith
25h 53m2 stops Dallas/Fort Worth Los Angeles Los Angeles
American Airlines Logo
9:25 pm - 6:00 amSYD  Sydney Kingsford Smith-PHL Philadelphia
22h 35m1 stop San Francisco
$1,445American Airlines
Mon, Sep 14 - Sun, Sep 27
American Airlines Logo
3:42 pm - 7:05 amPHL  Philadelphia-SYD Sydney Kingsford Smith
25h 23m1 stop Los Angeles Los Angeles
American Airlines Logo
9:25 pm - 6:00 amSYD  Sydney Kingsford Smith-PHL Philadelphia
22h 35m1 stop San Francisco
$1,445American Airlines
Mon, Sep 14 - Sun, Sep 27
United Airlines Logo
1:30 pm - 6:55 amPHL  Philadelphia-SYD Sydney Kingsford Smith
27h 25m2 stops Chicago O'Hare Intl San Francisco
United Airlines Logo
9:30 am - 7:24 pmSYD  Sydney Kingsford Smith-PHL Philadelphia
23h 54m2 stops Los Angeles Los Angeles Chicago O'Hare Intl
$1,449United Airlines
Mon, Sep 14 - Sun, Sep 27
United Airlines Logo
1:30 pm - 6:55 amPHL  Philadelphia-SYD Sydney Kingsford Smith
27h 25m2 stops Chicago O'Hare Intl San Francisco
United Airlines Logo
9:30 am - 7:24 pmSYD  Sydney Kingsford Smith-PHL Philadelphia
23h 54m2 stops Los Angeles Los Angeles Chicago O'Hare Intl
$1,453United Airlines
Mon, Sep 14 - Sun, Sep 27

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Air Canada flights from Philadelphia to Sydney

Our best Air Canada deals on Philadelphia to Sydney flight tickets
Air Canada
Sep 15
PHL10:05 amPhiladelphia
31h 15m
2 stops
SYD7:20 amSydney Kingsford Smith
Sep 21
SYD9:20 amSydney Kingsford Smith
26h 12m
2 stops
PHL9:32 pmPhiladelphia
$1,210
Air Canada
Aug 31
PHL10:05 amPhiladelphia
31h 15m
2 stops
SYD7:20 amSydney Kingsford Smith
Sep 16
SYD9:20 amSydney Kingsford Smith
43h 27m
2 stops
PHL2:47 pmPhiladelphia
$1,215
Air Canada
Nov 8
PHL3:20 pmPhiladelphia
26h 15m
2 stops
SYD9:35 amSydney Kingsford Smith
Nov 18
SYD11:20 amSydney Kingsford Smith
43h 24m
2 stops
PHL2:44 pmPhiladelphia
$1,216

Air New Zealand flights from Philadelphia to Sydney

Our best Air New Zealand deals on Philadelphia to Sydney flight tickets
Air New Zealand
Nov 4
PHL3:20 pmPhiladelphia
26h 15m
2 stops
SYD9:35 amSydney Kingsford Smith
Nov 11
SYD11:20 amSydney Kingsford Smith
43h 24m
2 stops
PHL2:44 pmPhiladelphia
$1,275
Air New Zealand
Aug 22
PHL1:06 pmPhiladelphia
29h 39m
2 stops
SYD8:45 amSydney Kingsford Smith
Aug 29
SYD10:20 amSydney Kingsford Smith
22h 55m
1 stop
PHL7:15 pmPhiladelphia
$1,855
Air New Zealand
Aug 20
PHL9:27 amPhiladelphia
31h 28m
1 stop
SYD6:55 amSydney Kingsford Smith
Aug 22
SYD11:55 amSydney Kingsford Smith
24h 36m
2 stops
PHL10:31 pmPhiladelphia
$2,181

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 18, 2026.
Use the filters below to find and compare flights from Philadelphia to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 9/15

10:05 am-7:20 am

2 stops31h 15m

Sydney Kingsford Smith

Mon 9/21

9:20 am-9:32 pm

2 stops26h 12m

$1,210

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Tue 11/3

3:20 pm-9:35 am

2 stops26h 15m

Sydney Kingsford Smith

Wed 11/18

11:20 am-2:44 pm

2 stops43h 24m

$1,215

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 9/28

8:41 am-11:50 am

3 stops37h 09m

Sydney Kingsford Smith

Mon 10/5

2:15 pm-9:30 am

3 stops34h 15m

$1,223

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Wed 11/4

10:54 am-9:35 am

3 stops30h 41m

Sydney Kingsford Smith

Wed 11/11

11:20 am-2:44 pm

2 stops43h 24m

$1,235

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 2/1

4:24 pm-10:20 am

2 stops25h 56m

Sydney Kingsford Smith

Mon 2/22

2:05 pm-8:35 pm

1 stop22h 30m

$1,267

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Sun 11/8

3:14 pm-6:55 am

1 stop23h 41m

Sydney Kingsford Smith

Wed 11/18

11:05 am-8:32 pm

2 stops25h 27m

$1,277

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 9/14

3:12 pm-7:05 am

2 stops25h 53m

Sydney Kingsford Smith

Sun 9/27

9:25 pm-6:00 am

1 stop22h 35m

$1,445
Quickest round-trip

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 9/14

3:42 pm-7:05 am

1 stop25h 23m

Sydney Kingsford Smith

Sun 9/27

9:25 pm-6:00 am

1 stop22h 35m

$1,445

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 9/14

1:30 pm-6:55 am

2 stops27h 25m

Sydney Kingsford Smith

Sun 9/27

9:30 am-7:24 pm

2 stops23h 54m

$1,449

PhiladelphiaSydney

PHL Philadelphia - SYD Sydney Kingsford Smith

PHLSYD

Philadelphia

Mon 9/14

1:30 pm-6:55 am

2 stops27h 25m

Sydney Kingsford Smith

Sun 9/27

9:30 am-7:24 pm

2 stops23h 54m

$1,453

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

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?

Prices are currently low for flights on this route.

Typical prices usually range from $1,415 to $1,873.
The lowest price recently found on this route was $1,210.

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 $1,049. If you are unable to visit Sydney during the month of February, then departing from Philadelphia during the month March is also very affordable. Most momondo users find prices during this month for around $1,122.

How far in advance should I book a flight from Philadelphia 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 $1,418 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 $999 on momondo.

Can stopping save me money on Philadelphia to Sydney flights?

You could potentially save up to 6% 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

Best Price Found

$712

Fastest flight time

25h 18m

Direct flights

None
The best one-way flight to Sydney from Philadelphia in the past 72 hours is $712. The best round-trip flight deal from Philadelphia to Sydney found on momondo in the last 72 hours is $1,210.
The fastest flight from Philadelphia to Sydney takes 25h 18m
There are no direct flights from Philadelphia to Sydney. There are no popular flight routes from Philadelphia to Sydney.
Search flight deals

Frequently asked questions about flying from Philadelphia to Sydney

  • 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 25h 18m, 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?

  • 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?

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
Fiji AirwaysPriceFrom $729Free CancellationRating
8.0
254 reviews
Search Fiji Airways flights
United AirlinesPriceFrom $843Free CancellationRating
7.4
10,100 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $1,046Free CancellationRating
7.5
1,083 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $1,066Free CancellationRating
7.1
11,493 reviews
Search Air Canada flights
American AirlinesPriceFrom $1,198Free CancellationRating
7.1
11,953 reviews
Search American Airlines flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Penrith
Wollongong
Katoomba
Cronulla
Leura
Randwick
Manly
Terrigal
Coogee
Lithgow
Charlestown
Swansea

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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