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Cheap flights from Philadelphia to Sydney from $934

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
5 May — 12 May1
1 adult

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 Tuesday or Thursday and return on a Thursday

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 30 April 2025.

Round-trip from

$1,799

One-way from

$934

Popular in

December

Cheapest in

February

Average price

$2,172
25/6-23/7
  • 25/6-23/7
  • 4 total stops
  • 70h 05m total
  • Philadelphia to Sydney
Search Deals
1/6
  • 1/6
  • 2 total stops
  • 33h 35m total
  • Philadelphia to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($514 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($127 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 30 April 2025.

Wed 25/617:48PHL - SYD
2 stops38h 22mMultiple Airlines
Wed 23/713:15SYD - PHL
2 stops31h 43mMultiple Airlines
Deal found 30/4$1,799
Tue 12/806:30PHL - SYD
2 stops36h 15mAir New Zealand
Wed 27/809:55SYD - PHL
2 stops26h 31mAir New Zealand
Deal found 29/4$1,958
Wed 24/917:25PHL - SYD
2 stops28h 20mFiji Airways
Sat 11/1014:45SYD - PHL
2 stops23h 24mFiji Airways
Deal found 29/4$2,139
Wed 3/1215:30PHL - SYD
2 stops26h 05mAir Canada
Wed 14/111:20SYD - PHL
2 stops43h 30mAir Canada
Deal found 29/4$2,208
Sun 26/1020:50PHL - SYD
1 stop31h 00mQatar Airways
Mon 10/1114:00SYD - PHL
2 stops35h 00mQatar Airways
Deal found 29/4$2,350
Fri 9/518:53PHL - SYD
2 stops34h 52mAlaska Airlines
Sun 15/621:40SYD - PHL
2 stops45h 45mAlaska Airlines
Deal found 29/4$2,492
Tue 12/818:48PHL - SYD
1 stop22h 17mQantas Airways
Wed 20/809:10SYD - PHL
1 stop29h 35mQantas Airways
Deal found 29/4$2,617
Sun 10/810:10PHL - SYD
3 stops30h 45mUnited Airlines
Wed 20/810:20SYD - PHL
2 stops22h 35mUnited Airlines
Deal found 29/4$2,829

Cheapflights Fare Finder

Customise 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 647,157 searches. Data last updated 30 April 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 25/6

17:48-22:10

2 stops38h 22m

Sydney Kingsford Smith

Wed 23/7

13:15-06:58

2 stops31h 43m

$1,799

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 12/8

06:30-08:45

2 stops36h 15m

Sydney Kingsford Smith

Wed 27/8

09:55-22:26

2 stops26h 31m

$1,958

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Wed 24/9

15:30-11:45

2 stops30h 15m

Sydney Kingsford Smith

Sat 11/10

14:45-23:09

2 stops23h 24m

$2,139

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Mon 13/10

09:45-08:20

2 stops31h 35m

Sydney Kingsford Smith

Mon 10/11

11:20-14:50

2 stops43h 30m

$2,208

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 26/10

20:50-18:50

1 stop31h 00m

Sydney Kingsford Smith

Mon 10/11

14:00-09:00

2 stops35h 00m

$2,350

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 13/5

07:04-19:45

2 stops46h 41m

Sydney Kingsford Smith

Sun 15/6

21:40-05:25

2 stops45h 45m

$2,523

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Tue 12/8

18:48-07:05

1 stop22h 17m

Sydney Kingsford Smith

Wed 20/8

09:10-00:45

1 stop29h 35m

$2,617

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 1/6

07:45-07:20

2 stops33h 35m

$934

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 9/5

07:30-07:20

2 stops33h 50m

$1,735

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Fri 9/5

20:45-17:10

1 stop30h 25m

$2,478

Flights are sorted by cheapest return flights first.

Deals found on 28/4

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 return 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 return flight from Philadelphia to Sydney. Price data was last updated on 25 April 2025.

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.

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

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.

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 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.

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 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).

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 30 April 2025.
Read through reviews of airlines operating flights from Philadelphia to Sydney, such as Fiji Airways, Alaska Airlines and Air New Zealand. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Entertainment

7.5

Overall

8.1

Boarding

8.2

Food

7.5

Comfort

8.1

Crew

8.5

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
Check prices

Entertainment

7.5

Overall

8.1

Boarding

8.2

Food

7.5

Comfort

8.1

Crew

8.5

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!
Alaska Airlines
8.0
Very Good
9,968 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Entertainment

7.5

Overall

8.1

Boarding

8.2

Food

7.5

Comfort

8.1

Crew

8.5

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
Check prices

Entertainment

7.5

Overall

8.1

Boarding

8.2

Food

7.5

Comfort

8.1

Crew

8.5

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
Check prices

Entertainment

7.5

Overall

8.1

Boarding

8.2

Food

7.5

Comfort

8.1

Crew

8.5

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
Check prices

Entertainment

7.5

Overall

8.1

Boarding

8.2

Food

7.5

Comfort

8.1

Crew

8.5

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?

    Our cheapest airline available from Philadelphia to Sydney is Air New Zealand. Our recent data shows that you can find tickets from as low as $1,958 on this airline. Additional options worth looking into are Fiji Airways and Air Canada, starting at $2,139 and $2,208 round-trip. Air New Zealand is currently priced 15% below the average price you’ll pay for this route.

  • 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 holiday 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, 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.

See more FAQs

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Manly
Penrith
Coogee
Randwick
Terrigal
Cronulla
Lithgow
Bondi Beach
Leura
Swansea

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Philadelphia to Sydney

Discover the top airline 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 647,157 searches. Data last updated 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,342Average$1,801FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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

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

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.

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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.

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