Find flights
When to book
Airlines
FAQs

Cheap flights from Sydney to Philadelphia from $841

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 15/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — PHL
27 Apr — 4 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Philadelphia

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Philadelphia
Explore the most affordable flight options available from Sydney to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 March 2026.

Thu 7/509:20
SYD
-
PHL
2 stops27h 23m
Air Canada
Thu 14/510:05
PHL
-
SYD
2 stops31h 15m
Air Canada
Deal found 23/3$1,401
Tue 12/513:15
SYD
-
PHL
3 stops37h 10m
Multiple Airlines
Tue 19/510:11
PHL
-
SYD
3 stops35h 39m
Multiple Airlines
Deal found 27/3$1,474
Tue 21/409:20
SYD
-
PHL
2 stops27h 23m
Air Canada
Tue 28/415:40
PHL
-
SYD
2 stops25h 40m
Air Canada
Deal found 24/3$1,729
Thu 18/609:20
SYD
-
PHL
2 stops44h 19m
Air Canada
Sun 28/610:05
PHL
-
SYD
2 stops55h 15m
Air Canada
Deal found 23/3$1,794
Thu 7/509:10
SYD
-
PHL
1 stop23h 44m
Qantas Airways
Thu 14/515:42
PHL
-
SYD
1 stop25h 23m
Qantas Airways
Deal found 23/3$1,828
Sat 2/509:10
SYD
-
PHL
1 stop23h 44m
Qantas Airways
Mon 25/515:29
PHL
-
SYD
1 stop25h 36m
Qantas Airways
Deal found 24/3$1,840
Sun 3/509:10
SYD
-
PHL
2 stops23h 33m
American Airlines
Wed 3/616:17
PHL
-
SYD
2 stops24h 48m
American Airlines
Deal found 23/3$1,847
Sat 9/509:10
SYD
-
PHL
2 stops36h 02m
Multiple Airlines
Sat 16/507:00
PHL
-
SYD
2 stops34h 05m
Multiple Airlines
Deal found 24/3$1,866
Thu 7/510:20
SYD
-
PHL
1 stop25h 09m
United Airlines
Thu 14/515:10
PHL
-
SYD
2 stops25h 45m
United Airlines
Deal found 23/3$1,873
Thu 30/417:50
SYD
-
PHL
2 stops37h 44m
Multiple Airlines
Mon 11/507:00
PHL
-
SYD
2 stops34h 30m
Multiple Airlines
Deal found 25/3$1,895
Sun 3/509:20
SYD
-
PHL
2 stops52h 23m
Air Canada
Wed 3/610:05
PHL
-
SYD
3 stops55h 15m
Air Canada
Deal found 23/3$1,911

Find flight deals from Sydney to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Philadelphia (PHL). 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 28 March 2026.

Round-trip from

$1,401

One-way from

$841

Popular in

May

Cheapest in

October

Average price

$1,752
Air Canada
  • Air Canada
  • 7/5-14/5
  • 4 total stops
  • 58h 38m total
  • Sydney to Philadelphia
Search Deals
15/8
  • 15/8
  • 3 total stops
  • 40h 20m total
  • Sydney to Philadelphia
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($26 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($95 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney to Philadelphia 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 28 March 2026.
Use the filters below to find and compare flights from Sydney to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Tue 12/5

13:15-12:25

3 stops37h 10m

Philadelphia

Tue 19/5

10:11-11:50

3 stops35h 39m

$1,474

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Thu 7/5

10:20-21:29

1 stop25h 09m

Philadelphia

Thu 14/5

15:10-06:55

2 stops25h 45m

$1,873

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Thu 30/4

17:50-17:34

2 stops37h 44m

Philadelphia

Mon 11/5

07:00-07:30

2 stops34h 30m

$1,895
Fastest return journey

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Tue 21/4

17:50-06:05

2 stops26h 15m

Philadelphia

Tue 28/4

17:37-07:05

1 stop23h 28m

$1,924

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Sun 10/5

09:15-18:06

2 stops22h 51m

Philadelphia

Sun 17/5

06:12-06:50

2 stops34h 38m

$2,088

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Sat 2/5

09:15-17:42

2 stops22h 27m

Philadelphia

Mon 25/5

07:10-06:50

2 stops33h 40m

$2,096

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Tue 12/5

09:30-19:37

2 stops24h 07m

Philadelphia

Tue 19/5

13:26-06:55

3 stops27h 29m

$2,475

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Thu 16/4

09:15-23:58

2 stops28h 43m

Philadelphia

Tue 12/5

15:44-06:50

2 stops25h 06m

$2,484

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Mon 1/6

10:20-17:17

1 stop20h 57m

Philadelphia

Tue 23/6

09:25-06:55

1 stop31h 30m

$2,487
Cheapest one-way

SydneyPhiladelphia

SYD - PHL

SYDPHL

Sydney Kingsford Smith

Wed 10/6

20:45-10:30

3 stops51h 45m

$900

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Sydney to Philadelphia

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

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

Use this chart to determine the optimal time to book a return flight from Sydney to Philadelphia. Price data was last updated on 13 March 2026.

The best time to book flights from Sydney to Philadelphia is 80 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Sydney to Philadelphia (average of $618). Flying from Sydney to Philadelphia in May is currently the most expensive (average of $1,305). 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 for a return flight from Sydney to Philadelphia?

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated 28 March 2026.
Get a feel of what it's like to fly with Qantas Airways,United Airlines, andAmerican Airlines from Sydney to Philadelphia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.5

Food

7.0

Overall

7.5

Entertainment

7.2

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
Qantas Airways
7.5
Good
1,013 reviews
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.5

Food

7.0

Overall

7.5

Entertainment

7.2

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
United Airlines
7.4
Good
9,499 reviews
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.5

Food

7.0

Overall

7.5

Entertainment

7.2

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
American Airlines
7.1
Good
11,520 reviews
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.5

Food

7.0

Overall

7.5

Entertainment

7.2

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
Air Canada
7.1
Good
10,853 reviews
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.5

Food

7.0

Overall

7.5

Entertainment

7.2

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Philadelphia. 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 Sydney to Philadelphia?

    Departing from Sydney to Philadelphia will take you 22h 51m. The distance between Sydney and Philadelphia is about 15871 km. Both multi-stop and direct flights can be found to your destination and back.

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

    United Airlines, at $618, was found to be the cheapest airline from Sydney to Philadelphia.Alternate airlines to your destination round-trip include Air Canada and Qantas Airways. Users have found that United Airlines is 69% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Sydney to Philadelphia (average of $618). Flying from Sydney to Philadelphia in May is currently the most expensive (average of $1,305). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Sydney to Philadelphia on these airlines

Choose from the following airlines for your flight from Sydney to Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on 28 March 2026.
Qantas Airways flights from Sydney Kingsford Smith to Philadelphia
Air Canada flights from Sydney Kingsford Smith to Philadelphia

Top 4 airlines flying from Sydney to Philadelphia

Discover the top 4 airlines that operate flights from Sydney to Philadelphia. 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 28 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$618Average$1,553FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,396Average$1,667FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,601Average$2,676FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,742Average$2,039FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find Sydney to Philadelphia flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Sydney to Philadelphia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Sydney to Philadelphia flexibly with Cheapflights today.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.