$782 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 25/8. 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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Best Australia Flight Deals from Philadelphia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney3 stops$1,773
Brisbane
Brisbane2 stops$2,091
Perth
Perth2 stops$2,249
Cairns
Cairns3 stops$3,107
Canberra
Canberra2 stops$2,348
Sydney
Sydney3 stops$1,773
Brisbane
Brisbane2 stops$2,091
Perth
Perth2 stops$2,249
Cairns
Cairns3 stops$3,107
Canberra
Canberra2 stops$2,348

Cheap Flights from Philadelphia to Australia

 
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

Thu, 28 Aug - Thu, 4 Sep
Logo
12:13 - 12:15PHL-SYD
34h 02m3 stops
Logo
13:15 - 06:10SYD-PHL
30h 55m3 stops
$1,773
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Sat, 30 Aug - Sat, 6 Sep
Logo
17:35 - 22:10PHL-SYD
38h 35m2 stops
Logo
13:45 - 05:55SYD-PHL
30h 10m2 stops
$1,824
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Wed, 19 Nov - Tue, 2 Dec
ANA Logo
10:05 - 20:15PHL-SYD
42h 10m2 stops
ANA Logo
21:45 - 14:08SYD-PHL
32h 23m2 stops
$1,849ANA
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Tue, 11 Nov - Tue, 18 Nov
ANA Logo
06:00 - 20:15PHL-SYD
46h 15m2 stops
ANA Logo
21:45 - 17:29SYD-PHL
35h 44m2 stops
$1,852ANA
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Wed, 3 Dec - Wed, 14 Jan
Qantas Airways Logo
12:50 - 14:25PHL-SYD
33h 35m2 stops
Qantas Airways Logo
07:05 - 17:44SYD-PHL
26h 39m2 stops
$1,954Qantas Airways
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Wed, 24 Sep - Sat, 11 Oct
Fiji Airways Logo
15:40 - 11:45PHL-SYD
30h 05m2 stops
Fiji Airways Logo
14:45 - 22:50SYD-PHL
23h 05m2 stops
$1,979Fiji Airways
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Wed, 24 Sep - Sat, 11 Oct
Fiji Airways Logo
18:55 - 11:45PHL-SYD
26h 50m2 stops
Fiji Airways Logo
14:45 - 22:50SYD-PHL
23h 05m2 stops
$1,980Fiji Airways
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Wed, 3 Dec - Wed, 14 Jan
Qantas Airways Logo
11:00 - 14:25PHL-SYD
35h 25m2 stops
Qantas Airways Logo
07:05 - 17:44SYD-PHL
26h 39m2 stops
$2,049Qantas Airways
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Tue, 23 Dec - Wed, 31 Dec
United Airlines Logo
08:00 - 07:30PHL-BNE
32h 30m2 stops
United Airlines Logo
11:40 - 21:32BNE-PHL
24h 52m2 stops
$2,777United Airlines
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Tue, 23 Dec - Thu, 1 Jan
United Airlines Logo
10:00 - 07:30PHL-BNE
30h 30m2 stops
United Airlines Logo
11:40 - 05:29BNE-PHL
32h 49m2 stops
$2,854United Airlines
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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 $1,613 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of return tickets is $3,059 and $2,776 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 the flight from Philadelphia to Australia, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

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Good to know

Low seasonApril
High seasonDecember
Cheapest flight$782
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (23% more expensive on average)
Flight from Philadelphia to Sydney

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 8863 reviews
7.3Comfort
7.0Entertainment
7.7Boarding
8.1Crew
6.6Food
Airline reviews

The best airline I have ever travel , really good customer service, attention and service !!

10.0 ExcellentYamilette, July 2025SFO - BCN
Read more United Airlines reviews

The best airline I have ever travel , really good customer service, attention and service !!

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

The food should improve! And The flight should leave on time and not make the traveler wait.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

A little bit more leg room in premium economy. I am 6’4”.

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

Information on your arrival and departure airports

Philadelphia (PHL)

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