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$429+ Cheap flights from Sydney (SYD) to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — PHL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Sydney Kingsford Smith to Philadelphia are usually found in February or March, booked 59 days in advance, depart on a Monday or Thursday and return on a Sunday

Cheap flight deals from Sydney to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$862
(Booking.com)

One-way from

$429
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,673
From Sydney Kingsford Smith to Philadelphia
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One-way flight from Sydney Kingsford Smith to Philadelphia
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Highest demand for flights based on searches. 16% potential increase in price ($278 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Sydney to Philadelphia

Cheapest flights from Sydney to Philadelphia
Explore the most affordable flight options available from Sydney to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Gotogate deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:20 amSYD - PHL
2 stops50h 18mAir Canada
Sun 10/127:30 amPHL - SYD
2 stops33h 50mAir Canada
Deal found 9/11$872
This Gotogate deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:20 amSYD - PHL
2 stops43h 27mAir Canada
Sun 11/94:35 pmPHL - SYD
2 stops49h 00mAir Canada
Deal found 9/10$907
This Air Canada deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:20 amSYD - PHL
2 stops44h 31mAir Canada
Sun 11/23:30 pmPHL - SYD
3 stops50h 05mAir Canada
Deal found 9/11$923
This Trip.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:10 amSYD - PHL
1 stop35h 52mMultiple Airlines
Sat 11/18:00 amPHL - SYD
2 stops34h 00mMultiple Airlines
Deal found 9/10$979
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/265:45 pmSYD - PHL
1 stop28h 17mMultiple Airlines
Sun 11/25:19 amPHL - SYD
2 stops33h 06mMultiple Airlines
Deal found 9/11$1,003
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:20 amSYD - PHL
3 stops43h 27mMultiple Airlines
Sun 11/93:48 pmPHL - SYD
2 stops25h 47mMultiple Airlines
Deal found 9/10$1,012
This BestPriceTravel deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2611:20 amSYD - PHL
1 stop23h 59mQantas Airways
Sun 11/23:55 pmPHL - SYD
1 stop25h 05mQantas Airways
Deal found 9/11$1,046
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:10 amSYD - PHL
1 stop20h 50mAmerican Airlines
Sun 10/124:04 pmPHL - SYD
1 stop23h 01mAmerican Airlines
Deal found 9/11$1,054
This Qantas Airways deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2711:20 amSYD - PHL
1 stop23h 59mQantas Airways
Sun 11/93:55 pmPHL - SYD
1 stop25h 05mQantas Airways
Deal found 9/10$1,056
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:20 amSYD - PHL
2 stops26h 01mUnited Airlines
Sun 11/96:25 pmPHL - SYD
1 stop22h 50mUnited Airlines
Deal found 9/10$1,061

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sydney to Philadelphia 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Sydney to Philadelphia that are best for you.

Fly from

Sydney

Fly to

Philadelphia

Route

Depart

Return

Price

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Fri 3/6

11:20 am-2:47 pm

2 stops43h 27m

Philadelphia

Tue 3/10

3:30 pm-8:35 am

2 stops26h 05m

$862

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Tue 10/7

10:20 am-9:38 pm

2 stops50h 18m

Philadelphia

Sun 10/12

7:30 am-8:20 am

2 stops33h 50m

$872

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 10/27

10:20 am-2:47 pm

2 stops43h 27m

Philadelphia

Sun 11/9

4:35 pm-9:35 am

2 stops49h 00m

$907

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Fri 3/6

11:20 am-2:47 pm

3 stops43h 27m

Philadelphia

Tue 3/10

3:30 pm-8:35 am

2 stops26h 05m

$915

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Sun 10/26

10:20 am-3:51 pm

2 stops44h 31m

Philadelphia

Sun 11/2

3:30 pm-9:35 am

3 stops50h 05m

$923

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Sat 10/25

10:10 am-7:02 am

1 stop35h 52m

Philadelphia

Sat 11/1

8:00 am-9:00 am

2 stops34h 00m

$979

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Sun 10/26

5:45 pm-7:02 am

1 stop28h 17m

Philadelphia

Sun 11/2

5:19 am-6:25 am

2 stops33h 06m

$1,003

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 10/27

10:20 am-2:47 pm

3 stops43h 27m

Philadelphia

Sun 11/9

3:48 pm-9:35 am

2 stops25h 47m

$1,012

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Wed 10/15

5:20 pm-6:15 am

3 stops51h 55m

$447

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Fri 10/10

10:20 am-6:15 am

3 stops34h 55m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 17 results
1
2

Best time to book a flight from Sydney to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Sydney with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Philadelphia

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

Use this chart to determine the optimal time to book a round-trip flight from Sydney to Philadelphia. Price data was last updated on August 29, 2025.

The price you pay for your flight from Sydney to Philadelphia may vary depending on when you book. For the best chance of a lower fare, look to book 59 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Sydney to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from Sydney to Philadelphia (average of $236). Flying from Sydney to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Qantas Airways from Sydney to Philadelphia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
905 reviews

Boarding

7.7

Crew

8.2

Entertainment

7.2

Overall

7.5

Comfort

7.5

Food

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.
Qantas Airways
7.5
Good
905 reviews
Qantas Airways
7.5
Good
905 reviews

Boarding

7.7

Crew

8.2

Entertainment

7.2

Overall

7.5

Comfort

7.5

Food

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sydney to Philadelphia?

    A quick flight from Sydney to Philadelphia can take about 43h 27m. Air Canada provides one of the quickest options available for as low as $862. Airlines will cover a distance of 9862 mi.

  • What is the cheapest airline to fly from Sydney to Philadelphia round-trip?

    Cheapflights users have booked flights from Sydney to Philadelphia round-trip from $1,123. Qantas Airways is currently priced 19% below the average price you’ll pay for this route.

  • Can I find deals for flights from Sydney to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Sydney to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Philadelphia.

  • Can I find deals for business class flights from Sydney to Philadelphia?

    Yes. Cheapflights offers flight deals from Sydney to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sydney to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Sydney to Philadelphia (average of $236). Flying from Sydney to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Pottstown
Reading
Dewey Beach
Ephrata
Camden
Ocean City
Cherry Hill
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Sydney to Philadelphia

Discover the top airline that operate flights from Sydney to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,123Average$1,262FlexibilityNo cancel feeOn-time74%

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