$941 Find Cheap Flights from Philadelphia to Australia

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 Australia departing on 21/10. 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
1 adult, Economy

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Cheap Flights from Philadelphia to Australia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney3 stops$1,714
Brisbane
Brisbane3 stops$1,985
Perth
Perth1 stop$1,964
Cairns
Cairns2 stops$2,002
Canberra
Canberra2 stops$2,157
Sydney
Sydney3 stops$1,714
Brisbane
Brisbane3 stops$1,985
Perth
Perth1 stop$1,964
Cairns
Cairns2 stops$2,002
Canberra
Canberra2 stops$2,157

Book Cheap Philadelphia to Australia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Philadelphia to Australia 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Philadelphia to Australia

gio, 30 ott - gio, 6 nov
 Logo
10:54 - 13:00PHL-SYD
35h 06m3 stops
 Logo
14:00 - 09:46SYD-PHL
35h 46m3 stops
$1,714
Find Deal
mar, 3 feb - ven, 27 feb
Alaska Airlines Logo
18:35 - 19:45PHL-SYD
33h 10m2 stops
Alaska Airlines Logo
21:40 - 17:31SYD-PHL
35h 51m2 stops
$1,720Alaska Airlines
Find Deal
sab, 14 feb - lun, 23 feb
Fiji Airways Logo
17:40 - 21:50PHL-SYD
36h 10m2 stops
Fiji Airways Logo
14:10 - 23:39SYD-PHL
25h 29m2 stops
$1,879Fiji Airways
Find Deal
mar, 11 nov - mar, 18 nov
Qantas Airways Logo
15:55 - 09:00PHL-SYD
25h 05m1 stop
Qantas Airways Logo
06:20 - 19:04SYD-PHL
28h 44m2 stops
$1,882Qantas Airways
Find Deal
sab, 31 gen - mar, 24 feb
Fiji Airways Logo
17:17 - 12:30PHL-SYD
27h 13m2 stops
Fiji Airways Logo
06:00 - 21:09SYD-PHL
31h 09m2 stops
$1,891Fiji Airways
Find Deal
mer, 11 feb - mer, 25 feb
Qantas Airways Logo
13:55 - 07:25PHL-SYD
25h 30m1 stop
Qantas Airways Logo
07:05 - 23:39SYD-PHL
32h 34m2 stops
$1,892Qantas Airways
Find Deal
lun, 23 feb - mar, 3 mar
ANA Logo
12:55 - 20:15PHL-SYD
39h 20m2 stops
ANA Logo
21:45 - 13:51SYD-PHL
56h 06m2 stops
$1,928ANA
Find Deal
lun, 23 feb - mar, 3 mar
ANA Logo
12:55 - 20:15PHL-SYD
39h 20m2 stops
ANA Logo
12:25 - 21:21SYD-PHL
48h 56m2 stops
$1,939ANA
Find Deal
mar, 23 dic - mer, 31 dic
United Airlines Logo
08:15 - 09:30PHL-MEL
33h 15m2 stops
United Airlines Logo
11:30 - 22:56MEL-PHL
27h 26m2 stops
$2,716United Airlines
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mar, 23 dic - mer, 31 dic
United Airlines Logo
08:27 - 09:30PHL-MEL
33h 03m2 stops
United Airlines Logo
13:00 - 07:09MEL-PHL
34h 09m1 stop
$2,743United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Philadelphia to Australia flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Australia, 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 Australia is September, when tickets cost $1,612 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of return tickets is $3,091 and $2,890 respectively.

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

The average price of all round-trip flights from Philadelphia to Australia clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Australia on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Philadelphia to Australia. For your return ticket, we recommend flying on a Thursday and avoiding Tuesdays for the best deals.

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

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 Australia, 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 a flight from Philadelphia to Australia, you should book around 2 weeks before departure, which saves you about 12% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$941
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (22% more expensive on average)
Flight from Philadelphia to Melbourne

FAQs - booking Australia flights

  • How is parking at Philadelphia International Airport?

    If you need to leave your car at the airport while flying out of Philadelphia International Airport, there are many parking garages available at your disposal. Garage C and D, which provides hourly parking, are available for your use if you want to park short-term. The Economy and Valet parking lots located in terminal F are your options for long-term parking. Additionally, each terminal has a shuttle service that picks up and drops off passengers.

  • How can I fly from Philadelphia to Sydney?

    Onestop option flights from Philadelphia to Sydney are provided by Delta, United Airlines, and Japan Airlines. If you want to save money, you might think about looking for a connecting flight with multiple layovers. Both Los Angeles International Airport and Dallas Fort Worth International Airport frequently experience layovers. Take advantage of these chances to buy a fast present or souvenir.

  • Which airlines should I fly with from Philadelphia to Sydney?

    You typically get what you pay for when traveling by air from PHL to SYD. However, three of the five highest-ranked airlines on KAYAK are ANA, Japan Airlines, and Air New Zealand, all of which provide exceptional services to customers. Air New Zealand allows customers to make last-minute modifications and pay later.

  • What activities and amenities do the departure and arrival airports offer for passengers to spend time?

    While you wait to catch your flight or airport shuttle transfer service, you can use numerous outstanding amenities and services at the departure and arrival airports to spend time. You can visit the onsite spas to treat yourself to a full body massage, nail services, and a facial. If you want, you can go to one of the numerous dining options offering a variety of cuisines and get something to eat if you're hungry.

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

    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 Australia.

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

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

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

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

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

    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 from Philadelphia to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Australia?

    The cheapest time of day to fly to Australia is generally in the evening, when retur flights cost $1,714 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Australia is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,714.

Top tips for finding cheap flights to Australia

  • When you arrive in Australia, you will land at Sydney Kingsford Smith Airport (SYD, which has locations where you can meet individuals who are picking you up from the airport, such as family and friends. Additionally, idling adjacent to the terminals is discouraged by the airport.
  • PHL Care, a network of places, programs, and services that guarantees accessibility for site visitors with disabilities, is a source of pride for the departure airport. Each PHL terminal offers restrooms that are wheelchair accessible and have changing tables. Visitors who have registered for the program are granted free parking in the accessibility car parks at Philadelphia International Airport (PHL). For further details about the program, get in touch with the airport.
  • Excellent inflight amenities are provided on flights between PHL and SYD, including entertainment, refreshments, snacks, plush seats, and enough legroom. You can obtain blankets if you want to travel at night.
  • There are notable lounges like the American Express Lounge at both the airports of departure and arrival. This lounge offers first-class services to passengers. Contact your airline before booking the services to know what you should expect.
  • The easiest way to get about if you're running late to catch your flight at PHL is to take a taxi. A taxi from the city center takes approximately 14min to PHL as compared to buses which take 39min to cover the same distance.

Reviews of the top airline flying from Philadelphia to Australia

 
Need help choosing which airline to fly with from Philadelphia to Australia? 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 8929 reviews
8.1Crew
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
Airline reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

2.0 MediocreAnonymous, Sept 2025SFO - MEX
Read more United Airlines reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

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

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