Question 1

What’s the cheapest stopover airport for flights from Philadelphia to Sydney?

Accepted Answer

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,386. Find deals

Question 2

Which airport typically offers the quickest stopover for flights from Philadelphia to Sydney?

Accepted Answer

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average stopover time of 2h 04m. Find deals

Question 3

What’s the top stopover airport for flights from Philadelphia to Sydney?

Accepted Answer

San Francisco (SFO) – chosen by Cheapflights users on 50% of one-stop itineraries from Philadelphia to Sydney on Cheapflights. Find deals

Question 4

What’s the fastest stopover option from Philadelphia to Sydney?

Accepted Answer

Flights via Los Angeles (LAX) have the shortest average one-way travel time for one-stop routes: 22h 15m. Find deals

Question 5

How long is the flight from Philadelphia to Sydney?

Accepted Answer

There are many flights that can get you from Philadelphia to Sydney in 28h 45m. Fly via Delta to get the fastest option. The distance between Philadelphia and Sydney is about 15871 km.

Question 6

What is the cheapest airline to fly from Philadelphia to Sydney round-trip?

Accepted Answer

Our cheapest airline available from Philadelphia to Sydney is United Airlines. Our recent data shows that you can find tickets from as low as $1,327 on this airline. United Airlines is currently priced 43% below the average price you’ll pay for this route.

Question 7

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

Accepted Answer

Booking 27 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 8

What is the cheapest month to book a flight from Philadelphia to Sydney?

Accepted Answer

Currently, May is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $129). Flying from Philadelphia to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 9

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

Accepted Answer

Travellers seeking maximum savings on their Philadelphia to Sydney flight should consider departing on Saturday afternoons when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 10

E

Accepted Answer

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Question 11

E

Accepted Answer

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Question 12

What is the cheapest day to fly return from Philadelphia to Sydney?

Accepted Answer

Tuesday flights are generally found to be more expensive for flights from Philadelphia to Sydney. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sydney.

Question 13

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

Accepted Answer

Find a great deal and save up to 31% by booking at least 28 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Philadelphia to Sydney within the next two weeks, with the cheapest ticket starting at $1,357.

Question 14

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

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Sydney. Flights to Sydney from Philadelphia in February are about $2,330 on average during February, but can be found for as low as $1,286.

Question 15

What is the cheapest time of day to fly from PHL to SYD?

Accepted Answer

When flying from Philadelphia to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Question 16

Can I find deals for flights from Philadelphia to Sydney that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Philadelphia to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 17

How can I find direct flights from Philadelphia to Sydney?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Sydney.

Question 18

Can I find deals for business class flights from Philadelphia to Sydney?

Accepted Answer

Yes. Cheapflights offers flight deals from Philadelphia to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 19

How does Cheapflights help users find flights from Philadelphia to Sydney?

Accepted Answer

Deals for Philadelphia to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Question 20

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Sydney?

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from Philadelphia to Sydney by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Question 21

Can Cheapflights find flights from Philadelphia to Sydney with no change fees?

Accepted Answer

Yes, we can. To see specific flights from Philadelphia to Sydney with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Question 22

Can Cheapflights notify me if prices for flights from Philadelphia to Sydney become cheaper?

Accepted Answer

Of course! You can now track prices for flights from Philadelphia to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Round-trip from	$1,316
One-way from	$818
Popular in	December
Cheapest in	February
Average price	$2,248

Cheap flights from Philadelphia to Sydney from $818

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Philadelphia to Sydney Kingsford Smith are usually found in February or September, booked 27 days in advance, depart on a Tuesday or Thursday and return on a Thursday

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Cheapest flights from Philadelphia to SydneyExplore the most affordable flight options available from Philadelphia to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.

Explore the most affordable flight options available from Philadelphia to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.

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Best time to book a flight from Philadelphia to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Philadelphia with our price prediction graph.

Cheapflights Insights

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

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

What is the cheapest month to book a flight from Philadelphia to Sydney?

What’s the top stopover airport for flights from Philadelphia to Sydney?

What’s the fastest stopover option from Philadelphia to Sydney?

What’s the fastest stopover option from Philadelphia to Sydney?

Which airport typically offers the quickest stopover for flights from Philadelphia to Sydney?

Reviews of airlines servicing Sydney

Read reviews from past customers who have flown with United Airlines from Philadelphia to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Philadelphia to Sydney?

What is the cheapest airline to fly from Philadelphia to Sydney round-trip?

Can I find deals for flights from Philadelphia to Sydney that include hotel bookings?

How can I find direct flights from Philadelphia to Sydney?

Can I find deals for business class flights from Philadelphia to Sydney?

What is the cheapest month to book a flight from Philadelphia to Sydney?

Travelling to a place near Sydney?

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Alternative routes for Philadelphia to Sydney

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Top airline flying from Philadelphia to Sydney

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How does Cheapflights help users find flights from Philadelphia to Sydney?

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Sydney?

Can Cheapflights find flights from Philadelphia to Sydney with no change fees?

Can Cheapflights notify me if prices for flights from Philadelphia to Sydney become cheaper?

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Cheapest flights from Philadelphia to Sydney
Explore the most affordable flight options available from Philadelphia to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.