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$541+ Cheap flights from Pennsylvania 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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Cheap flight deals from Pennsylvania to Sydney

Cheapest flights from Pennsylvania to Sydney
Explore the most affordable flight options available from Pennsylvania to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.

This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/104:50 pm
DCA
-
SYD
1 stop24h 00m
Delta
Sun 5/249:15 am
SYD
-
DCA
1 stop20h 25m
Delta
Deal found 5/7$1,010
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:50 pm
DCA
-
SYD
1 stop24h 00m
Delta
Sun 6/79:15 am
SYD
-
DCA
1 stop20h 20m
Delta
Deal found 5/8$1,011
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1510:16 am
IAD
-
SYD
2 stops30h 34m
Delta
Mon 6/299:15 am
SYD
-
IAD
2 stops29h 29m
Delta
Deal found 5/7$1,015
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Tue 6/301:31 pm
PHL
-
SYD
2 stops27h 29m
United Airlines
Mon 7/2710:20 am
SYD
-
PHL
1 stop29h 03m
United Airlines
Deal found 5/7$1,015
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:15 am
IAD
-
SYD
2 stops29h 35m
Delta
Sun 6/79:15 am
SYD
-
IAD
2 stops23h 27m
Delta
Deal found 5/8$1,016
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/52:31 pm
PHL
-
SYD
2 stops26h 19m
Delta
Wed 8/199:15 am
SYD
-
PHL
2 stops24h 36m
Delta
Deal found 5/8$1,016
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Sat 5/304:14 pm
PHL
-
SYD
2 stops48h 46m
United Airlines
Sun 6/149:30 am
SYD
-
PHL
2 stops29h 29m
United Airlines
Deal found 5/7$1,029
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/273:38 pm
PHL
-
SYD
2 stops49h 12m
Delta
Tue 7/289:15 am
SYD
-
PHL
2 stops22h 49m
Delta
Deal found 5/7$1,030
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:50 pm
DCA
-
SYD
1 stop24h 00m
Delta
Sat 7/259:15 am
SYD
-
DCA
1 stop20h 20m
Delta
Deal found 5/8$1,060
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/144:45 pm
DCA
-
SYD
1 stop24h 05m
Delta
Sat 6/209:15 am
SYD
-
DCA
1 stop20h 20m
Delta
Deal found 5/8$1,061
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:40 pm
IAD
-
SYD
2 stops28h 10m
Delta
Sat 7/259:15 am
SYD
-
IAD
2 stops27h 58m
Delta
Deal found 5/8$1,065
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:50 pm
DCA
-
SYD
1 stop24h 00m
Delta
Thu 7/239:15 am
SYD
-
DCA
2 stops27h 44m
Delta
Deal found 5/8$1,065

Find flight deals from Pennsylvania to Sydney

Keep the following information in mind while searching for Pennsylvania to Sydney flight deals. Data was last updated May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,010
(Delta)

One-way from

$541
(Delta)

Popular in

December

Cheapest in

February

Average price

$1,446
Provider with most accurate pricing for Philadelphia-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Sydney Kingsford Smith flights.
Search Deals
From Pennsylvania to Sydney Kingsford Smith
Search Deals
One-way flight from Pennsylvania to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($213 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pennsylvania 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 11, 2026.
Use the filters below to find and compare flights from Pennsylvania to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sun 5/24

10:32 am-6:50 am

2 stops30h 18m

Sydney Kingsford Smith

Sun 6/7

9:15 am-6:37 pm

2 stops23h 22m

$1,015

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 8/4

4:45 pm-6:50 am

1 stop24h 05m

Sydney Kingsford Smith

Sun 9/27

9:15 am-11:24 pm

2 stops28h 09m

$1,016

PhiladelphiaSydney

PHL - SYD

PHLSYD

Philadelphia

Sat 5/23

8:05 am-6:50 am

2 stops32h 45m

Sydney Kingsford Smith

Tue 5/26

9:15 am-6:06 pm

2 stops22h 51m

$1,065

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 8/30

12:30 pm-6:50 am

2 stops28h 20m

Sydney Kingsford Smith

Fri 9/4

9:15 am-9:50 am

2 stops38h 35m

$1,066

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Sat 6/13

4:45 pm-6:50 am

1 stop24h 05m

Sydney Kingsford Smith

Fri 6/19

9:15 am-10:59 pm

2 stops27h 44m

$1,116

New YorkSydney

LGA - SYD

LGASYD

New York LaGuardia

Sat 5/23

4:59 pm-7:00 am

2 stops48h 01m

Sydney Kingsford Smith

Wed 5/27

9:30 am-7:04 pm

2 stops23h 34m

$1,157

PittsburghSydney

PIT - SYD

PITSYD

Pittsburgh

Wed 8/5

5:55 pm-7:00 am

1 stop23h 05m

Sydney Kingsford Smith

Wed 8/26

9:30 am-4:31 pm

1 stop21h 01m

$1,160

PittsburghSydney

PIT - SYD

PITSYD

Pittsburgh

Wed 6/3

2:13 pm-7:00 am

2 stops26h 47m

Sydney Kingsford Smith

Sun 6/14

9:30 am-4:51 pm

1 stop21h 21m

$1,161

New YorkSydney

JFK - SYD

JFKSYD

New York John F Kennedy Intl

Sun 7/26

4:20 pm-6:50 am

1 stop24h 30m

Sydney Kingsford Smith

Tue 8/4

9:15 am-6:30 pm

1 stop23h 15m

$1,161

New YorkSydney

LGA - SYD

LGASYD

New York LaGuardia

Tue 5/26

3:20 pm-7:00 am

2 stops25h 40m

Sydney Kingsford Smith

Wed 6/3

10:20 am-7:22 pm

2 stops23h 02m

$1,166

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/7

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Pennsylvania to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Pennsylvania 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 Pennsylvania to Sydney

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

The price you pay for your flight from Pennsylvania to Sydney may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Pennsylvania to Sydney (average of $250). Flying from Pennsylvania to Sydney in June is currently the most expensive (average of $1,217). 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.

How much does it cost to fly round-trip from Pennsylvania to Sydney?

Related info for your journey

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

  • What airport do you fly into for flights to Sydney from Pennsylvania?

    Sydney Kingsford Smith (SYD) is the airport you will fly into if you book a flight from Pennsylvania to Sydney. It is only a 4.6 mi journey from Kingsford Smith (SYD) to Sydney’s city center.

  • How long is the flight from Pennsylvania to Sydney?

    A quick flight from Pennsylvania to Sydney can take about 30h 18m. Delta provides one of the quickest options available for as low as $1,015. Pennsylvania and Sydney are separated by a distance of 9862 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Qantas Airways. According to our data, you can fly for as low as $609. Users have also found prices from $668 and $777 on Fiji Airways and American Airlines, respectively.

  • What are the most popular routes from Pennsylvania to Sydney?

    When deciding which route to take from Pennsylvania to Sydney consider New York John F Kennedy Intl - Sydney Kingsford Smith, Newark - Sydney Kingsford Smith or New York LaGuardia - Sydney Kingsford Smith as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Pennsylvania 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 Pennsylvania to Sydney?

    Currently, August is the cheapest month in which you can book a flight from Pennsylvania to Sydney (average of $250). Flying from Pennsylvania to Sydney in June is currently the most expensive (average of $1,217). 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 Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Pennsylvania to Sydney

Discover the top 6 airlines that operate flights from Pennsylvania 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 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$843Average$1,494FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,044Average$1,456FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$1,066Average$1,439FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,127Average$1,499FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$1,256Average$1,486FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,418Average$1,548FlexibilityNo cancel feeOn-time78%

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