PHL - SYD

$1,192 Find Cheap Flights from Philadelphia to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Sydney departing on 7/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Sydney, as well as popular online travel agencies
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Cheap Flight Deals from Philadelphia to Sydney (PHL-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Philadelphia to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Philadelphia to Sydney

KAYAK's recommended return flight deals from the most popular airlines that fly from Philadelphia to Sydney.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
 Logo
17:34 - 22:10PHL-SYD
38h 36m2 stops
 Logo
13:15 - 06:50SYD-PHL
31h 35m2 stops
$1,894
Find Deal
Wed, 28 May - Wed, 4 Jun
 Logo
07:45 - 11:45PHL-SYD
38h 00m2 stops
 Logo
13:15 - 06:30SYD-PHL
31h 15m2 stops
$1,916
Find Deal
Wed, 21 May - Wed, 28 May
Air New Zealand Logo
13:06 - 10:35PHL-SYD
31h 29m2 stops
Air New Zealand Logo
18:20 - 22:26SYD-PHL
42h 06m2 stops
$2,078Air New Zealand
Find Deal
Wed, 27 Aug - Tue, 2 Sep
Air New Zealand Logo
13:06 - 08:45PHL-SYD
29h 39m2 stops
Air New Zealand Logo
18:20 - 22:26SYD-PHL
42h 06m2 stops
$2,081Air New Zealand
Find Deal
Wed, 27 Aug - Tue, 2 Sep
Fiji Airways Logo
18:50 - 11:45PHL-SYD
26h 55m2 stops
Fiji Airways Logo
13:45 - 22:56SYD-PHL
23h 11m2 stops
$2,217Fiji Airways
Find Deal
Mon, 11 Aug - Sat, 23 Aug
Fiji Airways Logo
18:50 - 22:10PHL-SYD
37h 20m2 stops
Fiji Airways Logo
06:00 - 22:56SYD-PHL
30h 56m2 stops
$2,225Fiji Airways
Find Deal
Tue, 26 Aug - Tue, 2 Sep
Qatar Airways Logo
20:30 - 17:10PHL-SYD
30h 40m1 stop
Qatar Airways Logo
19:00 - 09:00SYD-PHL
52h 00m2 stops
$2,342Qatar Airways
Find Deal
Tue, 26 Aug - Tue, 2 Sep
Qatar Airways Logo
20:30 - 06:15PHL-SYD
43h 45m1 stop
Qatar Airways Logo
11:00 - 09:00SYD-PHL
36h 00m2 stops
$2,456Qatar Airways
Find Deal
Tue, 26 Aug - Wed, 10 Sep
United Airlines Logo
08:15 - 06:55PHL-SYD
32h 40m2 stops
United Airlines Logo
10:20 - 00:14SYD-PHL
27h 54m3 stops
$2,823United Airlines
Find Deal
Mon, 25 Aug - Mon, 8 Sep
United Airlines Logo
06:30 - 06:55PHL-SYD
34h 25m3 stops
United Airlines Logo
10:20 - 00:14SYD-PHL
27h 54m3 stops
$2,980United Airlines
Find Deal
Fri, 12 Sep - Fri, 19 Sep

KAYAK's insights & trends for Philadelphia to Sydney flights

Get data-powered insights and trends into flights from Philadelphia to Sydney to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Philadelphia to Sydney?

The average price of all round-trip flights from Philadelphia to Sydney clicked on KAYAK for each day over the last 12 months.
When flying from Philadelphia to Sydney, you should consider leaving on a Tuesday and avoid Wednesdays if you are looking for the best rates. For your return to Philadelphia, you’ll find the best rates on Thursdays and the most expensive ones on Tuesdays.

What is the cheapest month to fly from Philadelphia to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Philadelphia to Sydney is February, where tickets cost $1,808 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $3,201 and $2,603 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Philadelphia to Sydney, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low season

September

High season

December

Cheapest flight

$1,192
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (39% more expensive on average)
Flight from Philadelphia to Sydney

When to book flights from Philadelphia to Sydney

Are your dates flexible? Find out the best times to travel from Philadelphia to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Sydney

  • Can I pre-select my seat when flying Qantas Airways from Philadelphia to Sydney?

    Yes, when flying Qantas Airways from Philadelphia to Sydney, you can pre-select your seat. Qantas allows passengers to choose their seats in advance during the booking process or at a later time through their website or mobile app.

  • How does Qantas Airways support sustainable travel on flights from Philadelphia to Sydney?

    Qantas Airways supports sustainable travel on flights from Philadelphia to Sydney by implementing fuel-efficient aircraft, promoting carbon offset programs for passengers, and investing in renewable energy projects. They also prioritize waste reduction and recycling efforts to minimize their environmental impact.

  • Can I rent a car after my flight from Philadelphia to Sydney?

    Yes, you can rent a car after your flight from Philadelphia to Sydney. Several rental companies operate in Sydney, including major international brands such as Hertz, Avis, Budget, Enterprise, and Europcar. These companies offer a wide range of vehicles to choose from, ensuring you can find a car that suits your needs and preferences. Simply check with the respective rental company for availability, rates, and booking details.

  • What are the in-flight entertainment amenities available on American Airlines flights from Philadelphia to Sydney?

    American Airlines offers a range of in-flight entertainment amenities on flights from Philadelphia to Sydney. Passengers can enjoy a variety of movies, TV shows, music, and games on personal seatback screens, along with free internet connectivity for browsing and streaming content.

  • What is the cheapest flight from Philadelphia to Sydney?

    In the last 3 days, the lowest price for a flight from Philadelphia to Sydney was $763 for a one-way ticket and $1,212 for a return.

  • Which airports will I be using when flying from Philadelphia to Sydney?

    On your way to Sydney, you’ll fly out from Philadelphia. You’ll be landing at Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Philadelphia to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Sydney?

    oneworld, and Star Alliance are the airline alliances operating flights between Philadelphia and Sydney, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Philadelphia to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Philadelphia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Philadelphia to Sydney

  • Upon arrival at Sydney Airport, you can use various public transportation means to reach your destination. Options include the Airport Link train, which provides a direct connection to the city center and surrounding suburbs. Additionally, buses operated by Sydney Buses and private shuttle services are available.
  • U.S. citizens traveling from Philadelphia to Sydney require a valid passport with at least six months of validity beyond the intended stay. Additionally, they must obtain an Electronic Travel Authority (ETA) or a Visitor Visa (subclass 600) prior to departure. The ETA allows for stays up to 90 days, while the Visitor Visa permits longer stays.
  • You can change your seat on Delta for flights from Philadelphia to Sydney. Delta provides various seat selection options, including the ability to choose your seat during the booking process or later through its website or mobile app. Additionally, Delta offers upgrade options such as Delta Comfort+ and Delta One for enhanced comfort and amenities during your journey. Contact Delta directly or manage your booking online to explore seat change and upgrade possibilities.
  • Delta Airlines offers a range of kid-friendly options on flights from Philadelphia to Sydney. These include in-flight entertainment with a variety of movies, TV shows, and games suitable for children, as well as kid-friendly meals and special amenities to make the journey more enjoyable for young travelers.
  • Delta Airlines has specific pet restrictions for flights from Philadelphia to Sydney. Only small dogs, cats, and household birds are allowed as cabin pets. The maximum weight for cabin pets is 20 lb. Larger dogs and other animals must be transported as cargo.
See more tips

Top airline flying from Philadelphia to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8683 reviews
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
7.1Entertainment
Airline reviews

Multiple delays and not straight answer from the United team

2.0 MediocreAlex, Apr 2025FLL - EWR
Read more United Airlines reviews

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

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

Information on your arrival and departure airports

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