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$551+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Sydney Kingsford Smith are usually found in September or February, 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 June 12, 2025.

Round-trip from

$1,073
(Kiwi.com)

One-way from

$551
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$1,397
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. 15% potential increase in price ($264 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:40 pmPHL - SYD
2 stops54h 00mMultiple Airlines
Sun 9/145:45 pmSYD - PHL
1 stop34h 17mMultiple Airlines
Deal found 6/11$1,073
This oojo deal was found by Cheapflights users on 6/11. 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.
Sat 11/16:35 pmPHL - SYD
2 stops26h 55mFiji Airways
Sat 11/152:30 pmSYD - PHL
2 stops22h 43mFiji Airways
Deal found 6/11$1,202
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Wed 12/33:30 pmPHL - SYD
2 stops26h 05mAir Canada
Wed 1/1411:20 amSYD - PHL
2 stops43h 30mAir Canada
Deal found 6/11$1,372
This Gurufare deal was found by Cheapflights users on 6/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:25 pmPHL - SYD
2 stops46h 20mAir New Zealand
Mon 12/159:55 amSYD - PHL
2 stops42h 15mAir New Zealand
Deal found 6/11$1,412

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 June 12, 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 9/3

6:40 pm-2:40 pm

2 stops54h 00m

Sydney Kingsford Smith

Sun 9/14

5:45 pm-2:02 pm

1 stop34h 17m

$1,073

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 9/2

6:45 pm-11:45 am

2 stops27h 00m

Sydney Kingsford Smith

Tue 9/16

1:15 pm-11:29 pm

2 stops24h 14m

$1,203

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 9/1

9:20 am-7:20 am

3 stops32h 00m

Sydney Kingsford Smith

Mon 9/8

9:20 am-10:08 pm

2 stops26h 48m

$1,378

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 8/12

6:28 pm-6:55 am

1 stop22h 27m

Sydney Kingsford Smith

Tue 8/26

11:50 am-10:26 pm

2 stops24h 36m

$1,459

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 9/9

8:30 pm-5:10 pm

1 stop30h 40m

Sydney Kingsford Smith

Tue 9/23

8:45 pm-9:00 am

1 stop50h 15m

$1,673

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 8/1

6:30 am-7:15 pm

2 stops46h 45m

Sydney Kingsford Smith

Sun 8/31

8:55 pm-2:17 pm

2 stops31h 22m

$1,798

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 6/25

8:15 am-7:05 am

1 stop32h 50m

$551

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 7/27

7:56 am-9:25 am

2 stops35h 29m

$1,041

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 6/17

5:55 pm-7:05 am

1 stop23h 10m

$1,094

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 7/27

7:56 am-7:00 am

3 stops33h 04m

$1,396

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 June 9, 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 $1,041). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $1,635). 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 June 12, 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 June 12, 2025.
Read through reviews of airlines operating flights from Philadelphia to Sydney, such as ANA, Fiji Airways and Air New Zealand. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
882 reviews

Food

7.7

Boarding

8.5

Comfort

8.2

Overall

8.3

Entertainment

7.9

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.3
Very good
882 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Boarding

8.5

Comfort

8.2

Overall

8.3

Entertainment

7.9

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Fiji Airways
8.1
Very good
194 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Boarding

8.5

Comfort

8.2

Overall

8.3

Entertainment

7.9

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Air New Zealand
8.0
Very good
483 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Boarding

8.5

Comfort

8.2

Overall

8.3

Entertainment

7.9

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Qantas Airways
7.5
Good
854 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Boarding

8.5

Comfort

8.2

Overall

8.3

Entertainment

7.9

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Qatar Airways
7.4
Good
3,584 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Boarding

8.5

Comfort

8.2

Overall

8.3

Entertainment

7.9

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

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, Fiji Airways ($1,203), Air Canada ($1,378), and Air New Zealand ($1,459) offers the cheapest pricing from Philadelphia to Sydney. Fiji Airways is priced at 17% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to Sydney one-way?

    The cheapest airline one-way is ANA, with whom users have recently found tickets for as low as $1,041. However, be on the lookout for offers from Qantas Airways and United Airlines, as they are both options that can get you from Philadelphia to Sydney for a low price.

  • 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 $1,041). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $1,635). 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
Manly
Coogee

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$834Average$943FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$860Average$969FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$945Average$1,229FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,220Average$1,699FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,288Average$1,782FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,294Average$1,983FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$1,420Average$1,630FlexibilityNo cancel feeOn-time74%

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