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Cheap Flights from Philadelphia (PHL) to Sydney (SYD)

View AU$1,158 flight on Wed, 19 Aug 2026Opens in a new window

Popular airlines from Philadelphia International Airport (PHL) to Sydney Airport (SYD)

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Cheap Flights from Philadelphia (PHL) to Sydney (SYD)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, 23 Sept - Mon, 12 Oct
PHL
Philadelphia
SYD
Sydney
AU$1,850 Return, found 1 day ago
AU$1,850
Return
found 1 day ago
Select Air Canada flight, departing Wed, 23 Sept from Philadelphia to Sydney, returning Mon, 12 Oct, priced at AU$1,850 found 1 day ago
Air Canada
Sun, 25 Oct - Sun, 22 Nov
PHL
Philadelphia
SYD
Sydney
AU$1,857 Return, just found
AU$1,857
Return
just found
Select Air Canada flight, departing Sun, 25 Oct from Philadelphia to Sydney, returning Sun, 22 Nov, priced at AU$1,857 just found
Air Canada
Mon, 1 Feb - Sun, 28 Feb
PHL
Philadelphia
SYD
Sydney
AU$1,859 Return, found 1 day ago
AU$1,859
Return
found 1 day ago
Select Air Canada flight, departing Mon, 1 Feb from Philadelphia to Sydney, returning Sun, 28 Feb, priced at AU$1,859 found 1 day ago
Air Canada
Wed, 23 Sept - Mon, 12 Oct
PHL
Philadelphia
SYD
Sydney
AU$1,861 Return, found 1 day ago
AU$1,861
Return
found 1 day ago
Select Air Canada flight, departing Wed, 23 Sept from Philadelphia to Sydney, returning Mon, 12 Oct, priced at AU$1,861 found 1 day ago
Air Canada
Sun, 25 Oct - Sun, 22 Nov
PHL
Philadelphia
SYD
Sydney
AU$1,867 Return, just found
AU$1,867
Return
just found
Select Air Canada flight, departing Sun, 25 Oct from Philadelphia to Sydney, returning Sun, 22 Nov, priced at AU$1,867 just found
Air Canada
Mon, 14 Sept - Sun, 27 Sept
PHL
Philadelphia
SYD
Sydney
AU$1,873 Return, found 6 days ago
AU$1,873
Return
found 6 days ago
Select Air Canada flight, departing Mon, 14 Sept from Philadelphia to Sydney, returning Sun, 27 Sept, priced at AU$1,873 found 6 days ago
Qatar Airways
Mon, 18 Jan - Thu, 11 Feb
PHL
Philadelphia
SYD
Sydney
AU$1,910 Return, found 11 hours ago
AU$1,910
Return
found 11 hours ago
Select Qatar Airways flight, departing Mon, 18 Jan from Philadelphia to Sydney, returning Thu, 11 Feb, priced at AU$1,910 found 11 hours ago
All Nippon Airways
Tue, 18 Aug - Sun, 30 Aug
PHL
Philadelphia
SYD
Sydney
AU$1,944 Return, found 5 hours ago
AU$1,944
Return
found 5 hours ago
Select All Nippon Airways flight, departing Tue, 18 Aug from Philadelphia to Sydney, returning Sun, 30 Aug, priced at AU$1,944 found 5 hours ago
Qantas Airways
Sun, 25 Oct - Sun, 22 Nov
PHL
Philadelphia
SYD
Sydney
AU$2,063 Return, just found
AU$2,063
Return
just found
Select Qantas Airways flight, departing Sun, 25 Oct from Philadelphia to Sydney, returning Sun, 22 Nov, priced at AU$2,063 just found
American Airlines
Sun, 25 Oct - Sun, 22 Nov
PHL
Philadelphia
SYD
Sydney
AU$2,065 Return, just found
AU$2,065
Return
just found
Select American Airlines flight, departing Sun, 25 Oct from Philadelphia to Sydney, returning Sun, 22 Nov, priced at AU$2,065 just found

Frequently asked questions

How much does a flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) cost?
You can find one-way and return flights from PHL to SYD with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when PHL to SYD ticket fares go up or down.
What is the cheapest month to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
If you're looking for the cheapest time to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.), November is typically your best bet. You can expect average return fares around AU$1616 during this month. November often sees lower prices as it's just before the peak summer travel season in Australia, when demand starts to pick up. Other budget-friendly months to consider for this route include September and December.
Which airlines fly direct from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Enter PHL to SYD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Delta is one of the cheapest airlines offering connecting return flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.), with prices starting from around AU$1512 for flights that can be booked for departure within the next year. These flights typically include a layover in Hartsfield-Jackson Atlanta Intl. (ATL). Prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
To find a cheap flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The cheapest months to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) are typically November and December, with average return flights around AU$1616. While these months offer the best value, they also fall during the lead-up to the Australian summer holidays, which means you'll likely find plenty of flight options. If you're flexible, these months give you a good balance of affordable fares and a wide selection of flights to choose from.
How many flights per day from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
There are approximately 84 connecting flights per day from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.). Some common connection points include Pearson Intl. (YYZ), O'Hare Intl. (ORD), and Los Angeles Intl. (LAX).
What is the earliest flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The earliest flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) typically departs around 5:00 AM. This service is offered by American Airlines and Korean Air. This is a seasonal service, active only in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
You'll find the most flights from Philadelphia International Airport (PHL) to Sydney Kingsford Smith International Airport (SYD) on a Wednesday, with around 51 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, United, and Delta.
What are the most popular departure times for flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The most popular departure times for flights from Philadelphia International Airport (PHL) to Sydney Kingsford Smith International Airport (SYD) are typically between 12pm and 3pm. Many major carriers, including American Airlines, Delta and United, offer flights during this window. This timing works well for many travellers as it allows for a morning in Philadelphia before heading to the airport, and you'll arrive in Sydney at a convenient time to start your trip.
How long does it take to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
There are no nonstop flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.). The distance between these two cities is approximately 15,884 kilometres. If you're looking for a flight with one stop, you can expect the journey to take around 23 hours and 30 minutes. Flights with two or more stops typically take a bit longer, averaging about 24 hours and 48 minutes. Keep in mind that these are average travel times and can vary depending on your specific routing, layover durations, and factors like wind patterns.
Can you fly business or first class from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Yes, you can fly business class or first class between PHL and SYD. Airlines that offer business class service on this route include:
  • Air Canada
  • British Airways
  • Delta
  • Aer Lingus
  • United
  • American Airlines
First class cabins are available on American Airlines.
How do I earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight with Expedia?
It's easy to earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sydney, NSW (SYD) from Philadelphia, PA (PHL)?
If you're planning to travel to Sydney from Philadelphia Intl. (PHL), you can fly directly into Kingsford Smith Intl. (SYD). Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Detroit Metropolitan Wayne County (DTW), or O'Hare Intl. (ORD) before reaching Sydney. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) at the last minute?
Typically, booking a last minute flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight and hotel package?
Securing a Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
If you booked your Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air New Zealand, All Nippon Airways, American Airlines, British Airways, Cathay Pacific, Delta, Korean Air, Qantas Airways, Qatar Airways, United
Return price
AU$1,850
Distance
15790 km

Book with confidence

Your quick guide to flights from Philadelphia to Sydney

Pick up great flights from Philadelphia to Sydney

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Philadelphia to Sydney. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Philadelphia to Sydney that take around hours.

Find cheap flights from Philadelphia to Sydney

From the great flight deals with prices currently ranging from AU$1,850 to AU$2,065, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Philadelphia to Sydney around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Sydney is normally in September.

Reasons to book your flight from Philadelphia to Sydney with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Philadelphia to Sydney across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Sydney right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Philadelphia to Sydney

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