A sunset over Sydney's skyline, including the Sydney Opera House and Harbour Bridge.

$823 Cheap Flights from Philadelphia (PHL) to Sydney (SYD)

View $823 flight on Mon, Feb 15, 2027Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Sydney Airport (SYD)

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Cheap Flights from Philadelphia to Sydney (PHL-SYD)

Prices were available within the past 7 days and start at $823 for one-way flights and $1,215 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Aug 31 - Tue, Oct 20
PHL
Philadelphia
SYD
Sydney
$1,215 Roundtrip, found 6 hours ago
$1,215
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Mon, Aug 31 from Philadelphia to Sydney, returning Tue, Oct 20, priced at $1,215 found 6 hours ago
Air Canada
Mon, Nov 2 - Sun, Nov 22
PHL
Philadelphia
SYD
Sydney
$1,220 Roundtrip, just found
$1,220
Roundtrip
just found
Select Air Canada flight, departing Mon, Nov 2 from Philadelphia to Sydney, returning Sun, Nov 22, priced at $1,220 just found
Air Canada
Mon, Aug 31 - Tue, Oct 20
PHL
Philadelphia
SYD
Sydney
$1,224 Roundtrip, found 6 hours ago
$1,224
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Mon, Aug 31 from Philadelphia to Sydney, returning Tue, Oct 20, priced at $1,224 found 6 hours ago
Air Canada
Mon, Nov 2 - Sun, Nov 22
PHL
Philadelphia
SYD
Sydney
$1,225 Roundtrip, just found
$1,225
Roundtrip
just found
Select Air Canada flight, departing Mon, Nov 2 from Philadelphia to Sydney, returning Sun, Nov 22, priced at $1,225 just found
Air Canada
Sun, Aug 30 - Tue, Sep 15
PHL
Philadelphia
SYD
Sydney
$1,228 Roundtrip, found 6 hours ago
$1,228
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Sun, Aug 30 from Philadelphia to Sydney, returning Tue, Sep 15, priced at $1,228 found 6 hours ago
Air Canada
Tue, Nov 17 - Wed, Nov 25
PHL
Philadelphia
SYD
Sydney
$1,231 Roundtrip, found 6 days ago
$1,231
Roundtrip
found 6 days ago
Select Air Canada flight, departing Tue, Nov 17 from Philadelphia to Sydney, returning Wed, Nov 25, priced at $1,231 found 6 days ago
Qatar Airways
Wed, Mar 3 - Fri, Mar 12
PHL
Philadelphia
SYD
Sydney
$1,319 Roundtrip, found 10 hours ago
$1,319
Roundtrip
found 10 hours ago
Select Qatar Airways flight, departing Wed, Mar 3 from Philadelphia to Sydney, returning Fri, Mar 12, priced at $1,319 found 10 hours ago
JetBlue Airways
Fri, Mar 19 - Fri, Apr 2
PHL
Philadelphia
SYD
Sydney
$1,333 Roundtrip, just found
$1,333
Roundtrip
just found
Select JetBlue Airways flight, departing Fri, Mar 19 from Philadelphia to Sydney, returning Fri, Apr 2, priced at $1,333 just found
Air New Zealand
Sat, Oct 31 - Sat, Nov 14
PHL
Philadelphia
SYD
Sydney
$1,415 Roundtrip, found 5 hours ago
$1,415
Roundtrip
found 5 hours ago
Select Air New Zealand flight, departing Sat, Oct 31 from Philadelphia to Sydney, returning Sat, Nov 14, priced at $1,415 found 5 hours ago
All Nippon Airways
Mon, Aug 31 - Tue, Oct 20
PHL
Philadelphia
SYD
Sydney
$1,420 Roundtrip, found 6 hours ago
$1,420
Roundtrip
found 6 hours ago
Select All Nippon Airways flight, departing Mon, Aug 31 from Philadelphia to Sydney, returning Tue, Oct 20, priced at $1,420 found 6 hours ago

Alternative airports near Sydney

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kingsford Smith Intl. SYD. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $1,220
SYD
Kingsford Smith Intl.
Cheapest
Average driving time to city center16 min
Flights from $1,220

Find the cheapest month to fly from Philadelphia (PHL) to Sydney (SYD)

November is typically the cheapest month to fly

From $1,173 - $1,505 per traveler.

What you need to know for your flight from Philadelphia Intl. to Kingsford Smith Intl.

Philadelphia (PHL) to Sydney (SYD) at a glance

Explore a range of airlines offering flights from Philadelphia (PHL) to Sydney (SYD) on this international long-haul journey. Compare various options from full-service carriers to find the best Philadelphia to Sydney airfare that matches your budget and schedule. As you prepare to discover Sydney's iconic attractions and vibrant neighborhoods, gather all the essential details for booking your Philadelphia to Sydney flights from Philadelphia International Airport (PHL) to Kingsford Smith International Airport (SYD).

  • Fastest flight duration: around 21h 15m in-flight, plus roughly 3h 30m layover with one stop
  • Route distance: roughly 9,900 miles (15,930 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $440–$1430, depending on seasonality and how far ahead you book

Flights from Philadelphia International Airport (PHL) to Kingsford Smith International Airport (SYD)

Recent traveler bookings reveal the top airlines favored for flights from Philadelphia to Sydney, particularly for one-stop and multi-stop journeys. Common layover spots include Los Angeles International Airport (LAX) with an approximate 3-hour 45-minute layover, San Francisco International Airport (SFO) at about 1 hour 30 minutes, and Dallas-Fort Worth International Airport (DFW) with a roughly 4-hour layover. These options give you the flexibility to compare prices, total travel times, and cabin classes to create the ideal itinerary.

  • Qantas Airways: This full-service airline provides a one-stop travel experience, with one-way ticket prices generally between $525 and $1480. It represents about 43% of departures for this route, featuring an in-flight duration of 21 hours and 15 minutes, resulting in a total travel time of approximately 25 hours, including layover time.
  • United: As a full-service carrier, United offers both one-stop and multi-stop options, with one-way fares typically ranging from $440 to $1110. It accounts for around 28% of flights on this route, with an in-flight time of 21 hours and 15 minutes and an overall journey duration of roughly 25 hours.
  • American Airlines: This full-service airline provides one-stop service with one-way fares falling between $735 and $1450. It makes up roughly 14% of the departures on this route, featuring an in-flight time of 21 hours and 15 minutes and a total travel time close to 25 hours, including layovers.
  • Delta: Offering multi-stop service, Delta is a full-service carrier with one-way fares typically ranging from $440 to $1465. It operates about 10% of departures on this route, with a flight duration of 22 hours and 30 minutes and a total journey time of approximately 27 hours and 15 minutes, accounting for layovers.

Alternative routes from Philadelphia (PHL) to Sydney (SYD)

  • Philadelphia to Palm Beach (PHL-LBH): The Palm Beach Seaplane Base Airport (LBH) is located approximately 26 miles from Kingsford Smith International Airport (SYD).
  • Philadelphia to Newcastle (PHL-NTL): Williamtown Airport (NTL) lies around 87 miles distant from Kingsford Smith International Airport (SYD).

How to find the best prices for flights from Philadelphia (PHL) to Sydney (SYD)

Getting some of the best deals on flights from Philadelphia to Sydney is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking at least two months in advance, which coincides with when most travelers make their reservations. Afternoon departures (12 PM to 6 PM) not only tend to offer lower prices but are also the most popular flight times. Additionally, flying on Tuesday generally provides cheaper rates, while Wednesday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Kingsford Smith International Airport from Philadelphia International Airport

Sydney welcomes travelers from Philadelphia with a range of transport options based on price, convenience, and proximity. Here's how to reach Sydney efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Sydney, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Kingsford Smith International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Kingsford Smith International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Kingsford Smith International Airport, several transport options are conveniently located nearby. International Airport Station, a metro station, is just 0.1 miles from the airport on foot, while Sydney Arncliffe Station, a train station, is about 1.2 miles away by car. For those heading to the waterfront, Sydney Seaport, a seaport, is located approximately 6.7 miles away by car.

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 cheap one-way flights from $823 and cheap return flights from $1,215 Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) with Expedia. One-way flights typically cost between $738 and $7378, and return flights often range between $1564 and $11951. 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 the cheapest fares first, and use the Price Tracking tool to receive alerts when Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
November is the cheapest month to fly from Philadelphia to Sydney, with average return fares around $1,083. This price is about 25% lower than the average throughout the year, as November is a less popular travel month. Other budget-friendly months to consider are September and December.*Averages based on flights available on Expedia in the last year.
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.)?
Japan Airlines is one of the cheapest airlines offering connecting flights from Philadelphia Intl. (PHL) to Kingsford Smith Intl. (SYD), with round-trip tickets starting from around $2,166. 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.*Prices based on flights available on Expedia in the last year.
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.)?
For flights from Philadelphia (PHL) to Sydney (SYD), the best times to fly are in November and December. These months are the cheapest, with return flights averaging around $1,083. While November offers lower prices, December is popular for holiday travel, so booking early is advisable to secure good fares.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The earliest flight from Philadelphia International Airport (PHL) to Kingsford Smith International (SYD) typically leaves at around 5:00 AM, with American Airlines and Korean Air providing service. This flight is part of a seasonal service active in December, making it a great option for early travelers looking to maximize their time in Sydney. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
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 (PHL) to Sydney (SYD) are in the early afternoon, from 12pm to 3pm. About 36% of passengers prefer this time window. Many major carriers, including American Airlines and Qantas, offer flights during this window. This timing is favored because it allows you to start your journey after a relaxed morning.
How long does it take to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
A flight from PHL to SYD with a layover takes around 23 hours, with the route covering approximately 9,870 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Philadelphia, PA (PHL-Philadelphia Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Business class seats are offered on the PHL to SYD route. Airlines that offer business class service on this route include:

  • Air Canada
  • American Airlines
  • United Airlines
  • Aer Lingus
  • British Airways
  • Delta Air Lines

First class is available with 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 from Philadelphia Intl. (PHL)?
From Philadelphia Intl. (PHL), you can fly into Kingsford Smith Intl. (SYD) to reach Sydney. Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Detroit Metropolitan Wayne County (DTW), 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.) Sydney Vacation Packages 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, Etihad Airways, Japan Airlines, JetBlue Airways, Korean Air, Lufthansa, Malaysia Airlines, Qantas Airways, Qatar Airways, United
Roundtrip price
$1,215
Distance
9868 mi

Book with confidence

Philadelphia to Sydney Flights

The cheapest times to fly from Philadelphia to Sydney

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to Sydney are during the month of August. You can find some of the cheapest flights from Philadelphia to Sydney with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to Sydney

Sunday is one of the best days to book for cheap flights from Philadelphia to Sydney: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to Sydney

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to Sydney in 2026. You can also book with separate airlines for your outbound and return journeys, from $823 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to Sydney flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to Sydney airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Philadelphia to Sydney Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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