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$682+ Cheap flights from Philadelphia (PHL) to Sydney (SYD)

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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Sydney Kingsford Smith are usually found in February or August, booked 27 days in advance, depart on a Sunday or Wednesday and return on a Monday

Cheap flight deals from Philadelphia to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,152
(Trip.com)

One-way from

$682
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,511
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
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From Philadelphia to Sydney Kingsford Smith
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One-way flight from Philadelphia to Sydney Kingsford Smith
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Highest demand for flights based on searches. 12% potential increase in price ($211 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Philadelphia to Sydney

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 May 1, 2025.

This Trip.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/255:48 pmPHL - SYD
2 stops38h 22mMultiple Airlines
Wed 7/231:15 pmSYD - PHL
2 stops31h 43mMultiple Airlines
Deal found 4/30$1,152
This StudentUniverse deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/712:58 pmPHL - SYD
2 stops31h 37mAir New Zealand
Thu 8/149:55 amSYD - PHL
2 stops26h 36mAir New Zealand
Deal found 4/30$1,329
This FlightHub deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/243:30 pmPHL - SYD
2 stops30h 15mFiji Airways
Sat 10/112:45 pmSYD - PHL
2 stops23h 24mFiji Airways
Deal found 4/30$1,370
This Air Canada deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/139:45 amPHL - SYD
2 stops31h 35mAir Canada
Mon 11/1011:20 amSYD - PHL
2 stops43h 30mAir Canada
Deal found 4/30$1,414
This oojo deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/268:30 pmPHL - SYD
1 stop43h 45mQatar Airways
Tue 9/211:00 amSYD - PHL
2 stops36h 00mQatar Airways
Deal found 4/30$1,515
This Cheapflightsfares deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:48 pmPHL - SYD
1 stop22h 17mQantas Airways
Mon 9/89:10 amSYD - PHL
1 stop22h 20mQantas Airways
Deal found 5/1$1,703
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:15 amPHL - SYD
2 stops32h 40mUnited Airlines
Sun 9/2110:20 amSYD - PHL
3 stops27h 54mUnited Airlines
Deal found 4/30$1,808
This Alaska Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/56:53 pmPHL - SYD
2 stops58h 52mAlaska Airlines
Fri 5/99:40 pmSYD - PHL
2 stops34h 13mAlaska Airlines
Deal found 4/30$1,927

Cheapflights Fare Finder

Customize your flight search to find flights from Philadelphia to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Philadelphia to Sydney that are best for you.

Fly from

Philadelphia

Fly to

Sydney

Route

Depart

Return

Price

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 6/25

5:48 pm-10:10 pm

2 stops38h 22m

Sydney Kingsford Smith

Wed 7/23

1:15 pm-6:58 am

2 stops31h 43m

$1,152

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Thu 8/7

12:58 pm-10:35 am

2 stops31h 37m

Sydney Kingsford Smith

Thu 8/14

9:55 am-10:31 pm

2 stops26h 36m

$1,329

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 9/24

3:30 pm-11:45 am

2 stops30h 15m

Sydney Kingsford Smith

Sat 10/11

2:45 pm-11:09 pm

2 stops23h 24m

$1,370

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 10/13

9:45 am-8:20 am

2 stops31h 35m

Sydney Kingsford Smith

Mon 11/10

11:20 am-2:50 pm

2 stops43h 30m

$1,414

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 8/26

8:30 pm-6:15 am

1 stop43h 45m

Sydney Kingsford Smith

Tue 9/2

11:00 am-9:00 am

2 stops36h 00m

$1,515

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 8/25

6:48 pm-7:05 am

1 stop22h 17m

Sydney Kingsford Smith

Mon 9/8

9:10 am-5:30 pm

1 stop22h 20m

$1,703

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 9/8

8:15 am-6:55 am

2 stops32h 40m

Sydney Kingsford Smith

Sun 9/21

10:20 am-12:14 am

3 stops27h 54m

$1,808

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 9/29

2:57 pm-11:45 am

2 stops30h 48m

$682

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 5/9

7:30 am-7:20 am

2 stops33h 50m

$1,111

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 5/9

8:45 pm-5:10 pm

1 stop30h 25m

$1,587

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Compare providers for flights from Philadelphia to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Sydney in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Sydney flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Philadelphia-Sydney flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Philadelphia-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Sydney flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Sydney. Price data was last updated on April 25, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Sydney, you should look to book at least 27 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,043). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $1,643). 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.

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

Find hourly flight availability from Philadelphia to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

It’s typically best to fly out from Philadelphia to Sydney in the morning. Doing so could potentially save you 30% on the flight price compared to flying in the evening, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to Sydney flight should consider departing on Sunday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

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 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated May 1, 2025.
Fiji Airways
8.1
Very good
190 reviews

Comfort

8.1

Food

7.5

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Fiji Airways
8.1
Very good
190 reviews
Fiji Airways
8.1
Very good
190 reviews

Comfort

8.1

Food

7.5

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Air New Zealand
8.0
Very good
472 reviews
Fiji Airways
8.1
Very good
190 reviews

Comfort

8.1

Food

7.5

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Qantas Airways
7.5
Good
829 reviews
Fiji Airways
8.1
Very good
190 reviews

Comfort

8.1

Food

7.5

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Qatar Airways
7.4
Good
3,563 reviews
Fiji Airways
8.1
Very good
190 reviews

Comfort

8.1

Food

7.5

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
United Airlines
7.4
Good
8,696 reviews
Fiji Airways
8.1
Very good
190 reviews

Comfort

8.1

Food

7.5

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

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.

  • What are the cheapest airlines flying from Philadelphia to Sydney round-trip?

    According to our current data, Air New Zealand ($1,329), Fiji Airways ($1,370), and Air Canada ($1,414) offers the cheapest pricing from Philadelphia to Sydney. Air New Zealand is priced at 10% lower than the current average price of a flight leaving 3 months from now.

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

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

  • How can I find direct flights from Philadelphia to Sydney?

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

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

    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.

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

    Currently, March is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,043). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $1,643). 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.

See more FAQs

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wollongong
Parramatta
Coogee
Manly

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Top 7 airlines flying from Philadelphia to Sydney

Discover the top 7 airlines that operate flights from Philadelphia to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$834Average$950FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$861Average$1,118FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$945Average$1,274FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,220Average$1,840FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,288Average$1,786FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,359Average$1,987FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$1,433Average$1,629FlexibilityNo cancel feeOn-time74%

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