$580+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SYD
May 18 — May 251
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Sydney with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Philadelphia to Sydney
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Last-minute
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Cheapest flights from Philadelphia to SydneyExplore 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 April 18, 2026.
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 April 18, 2026.
This Justfly.com deal was found by Cheapflights users on 4/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:50 pm
PHL
- SYD
1 stop31h 00m
Qatar Airways
Wed 11/189:40 pm
SYD
- PHL
1 stop51h 20m
Qatar Airways
Deal found 4/14![Qatar Airways logo]()
$1,254
This oojo deal was found by Cheapflights users on 4/15. 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 5/125:37 pm
PHL
- SYD
1 stop23h 28m
Qantas Airways
Tue 5/199:10 am
SYD
- PHL
1 stop23h 44m
Qantas Airways
Deal found 4/15![Qantas Airways logo]()
$1,273
This oojo deal was found by Cheapflights users on 4/16. 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.
Sun 4/195:37 pm
PHL
- SYD
1 stop23h 28m
Qantas Airways
Mon 5/119:10 am
SYD
- PHL
1 stop23h 44m
Qantas Airways
Deal found 4/16![Qantas Airways logo]()
$1,274
This oojo deal was found by Cheapflights users on 4/15. 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.
Wed 7/15:40 pm
PHL
- SYD
1 stop23h 25m
Qantas Airways
Mon 7/139:10 am
SYD
- PHL
1 stop23h 18m
Qantas Airways
Deal found 4/15![Qantas Airways logo]()
$1,283
This oojo deal was found by Cheapflights users on 4/16. 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 8/46:01 pm
PHL
- SYD
1 stop23h 04m
Qantas Airways
Tue 9/112:00 pm
SYD
- PHL
1 stop23h 03m
Qantas Airways
Deal found 4/16![Qantas Airways logo]()
$1,285
This oojo deal was found by Cheapflights users on 4/17. 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.
Sun 11/83:55 pm
PHL
- SYD
2 stops31h 40m
Qantas Airways
Wed 11/189:25 pm
SYD
- PHL
1 stop26h 00m
Qantas Airways
Deal found 4/17![Qantas Airways logo]()
$1,290
This Expedia deal was found by Cheapflights users on 4/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/33:29 pm
PHL
- SYD
1 stop25h 36m
Qantas Airways
Wed 6/179:10 am
SYD
- PHL
1 stop23h 25m
Qantas Airways
Deal found 4/16![Qantas Airways logo]()
$1,291
This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/195:30 pm
PHL
- SYD
2 stops23h 35m
American Airlines
Mon 5/412:00 pm
SYD
- PHL
1 stop20h 48m
American Airlines
Deal found 4/17![American Airlines logo]()
$1,305
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:28 pm
PHL
- SYD
1 stop27h 37m
American Airlines
Sun 9/279:10 am
SYD
- PHL
1 stop23h 24m
American Airlines
Deal found 4/16![American Airlines logo]()
$1,306
Best flights from Philadelphia to SydneyDiscover carefully curated flight deals from Philadelphia to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 18, 2026.
Discover carefully curated flight deals from Philadelphia to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 18, 2026.
This United Airlines deal was found by Cheapflights users on 4/16. 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 9/143:10 pm
PHL
- SYD
2 stops25h 45m
United Airlines
Sun 9/279:30 am
SYD
- PHL
2 stops38h 57m
United Airlines
Deal found 4/16![United Airlines logo]()
$1,310
This Qantas Airways deal was found by Cheapflights users on 4/14. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:40 pm
PHL
- SYD
1 stop23h 25m
Multiple Airlines
Mon 7/612:00 pm
SYD
- PHL
1 stop24h 57m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,311
This Delta deal was found by Cheapflights users on 4/15. 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 5/182:23 pm
PHL
- SYD
2 stops26h 27m
Delta
Tue 5/269:15 am
SYD
- PHL
2 stops26h 57m
Delta
Deal found 4/15![Delta logo]()
$1,321
This Etihad Airways deal was found by Cheapflights users on 4/15. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/188:28 am
PHL
- SYD
2 stops42h 22m
Etihad Airways
Sun 6/213:40 pm
SYD
- PHL
2 stops42h 20m
Etihad Airways
Deal found 4/15![Etihad Airways logo]()
$1,602
This KAYAK deal was found by Cheapflights users on 4/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/103:25 pm
PHL
- SYD
2 stops49h 55m
Air Canada
Sat 5/169:20 am
SYD
- PHL
2 stops27h 23m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,834
This United Airlines deal was found by Cheapflights users on 4/17. 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 8/16:23 pm
PHL
- SYD
2 stops46h 37m
United Airlines
Sat 8/159:30 am
SYD
- PHL
2 stops23h 40m
United Airlines
Deal found 4/17![United Airlines logo]()
$1,390
This Delta deal was found by Cheapflights users on 4/13. 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 9/143:10 pm
PHL
- SYD
2 stops25h 40m
Delta
Sun 9/279:15 am
SYD
- PHL
2 stops29h 12m
Delta
Deal found 4/13![Delta logo]()
$1,463
This United Airlines deal was found by Cheapflights users on 4/16. 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 8/46:10 am
PHL
- SYD
2 stops34h 45m
United Airlines
Tue 9/19:30 am
SYD
- PHL
2 stops29h 20m
United Airlines
Deal found 4/16![United Airlines logo]()
$1,397
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/191:26 pm
PHL
- SYD
3 stops27h 29m
United Airlines
Sat 7/410:20 am
SYD
- PHL
2 stops37h 19m
United Airlines
Deal found 4/17![United Airlines logo]()
$1,447
This Delta deal was found by Cheapflights users on 4/17. 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 6/155:40 am
PHL
- SYD
2 stops35h 10m
Delta
Fri 6/269:15 am
SYD
- PHL
2 stops34h 53m
Delta
Deal found 4/17![Delta logo]()
$1,592
This Air New Zealand deal was found by Cheapflights users on 4/15. 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 New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:25 am
PHL
- SYD
2 stops35h 15m
Multiple Airlines
Tue 8/2511:55 am
SYD
- PHL
3 stops38h 28m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,788
This United Airlines deal was found by Cheapflights users on 4/16. 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 5/169:55 am
PHL
- SYD
3 stops31h 05m
United Airlines
Sat 5/239:30 am
SYD
- PHL
2 stops28h 14m
United Airlines
Deal found 4/16![United Airlines logo]()
$1,582
Last-minute flights from Philadelphia to SydneyDiscover last-minute flight deals from Philadelphia to Sydney. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Sydney. Data last updated April 18, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 4/16. 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.
Sun 4/195:37 pm
PHL
- SYD
1 stop23h 28m
Qantas Airways
Mon 5/119:10 am
SYD
- PHL
1 stop23h 44m
Qantas Airways
Deal found 4/16![Qantas Airways logo]()
$1,274
This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/195:30 pm
PHL
- SYD
2 stops23h 35m
American Airlines
Mon 5/412:00 pm
SYD
- PHL
1 stop20h 48m
American Airlines
Deal found 4/17![American Airlines logo]()
$1,305
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:43 pm
PHL
- SYD
1 stop25h 47m
American Airlines
Mon 5/119:10 am
SYD
- PHL
2 stops23h 43m
American Airlines
Deal found 4/14![American Airlines logo]()
$1,317
This oojo deal was found by Cheapflights users on 4/14. 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.
Sun 5/105:37 pm
PHL
- SYD
1 stop23h 28m
Qantas Airways
Sat 5/169:10 am
SYD
- PHL
1 stop23h 44m
Qantas Airways
Deal found 4/14![Qantas Airways logo]()
$1,322
This oojo deal was found by Cheapflights users on 4/15. 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 5/125:37 pm
PHL
- SYD
1 stop23h 28m
Qantas Airways
Tue 5/199:10 am
SYD
- PHL
1 stop23h 44m
Qantas Airways
Deal found 4/15![Qantas Airways logo]()
$1,273
This American Airlines deal was found by Cheapflights users on 4/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/185:30 pm
PHL
- SYD
2 stops23h 35m
American Airlines
Tue 5/269:10 am
SYD
- PHL
1 stop21h 17m
American Airlines
Deal found 4/15![American Airlines logo]()
$1,312
This Delta deal was found by Cheapflights users on 4/15. 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 5/182:23 pm
PHL
- SYD
2 stops26h 27m
Delta
Tue 5/269:15 am
SYD
- PHL
2 stops26h 57m
Delta
Deal found 4/15![Delta logo]()
$1,321
This oojo deal was found by Cheapflights users on 4/16. 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.
Fri 5/295:40 pm
PHL
- SYD
1 stop23h 25m
Qantas Airways
Sun 6/1412:00 pm
SYD
- PHL
1 stop23h 02m
Qantas Airways
Deal found 4/16![Qantas Airways logo]()
$1,324
This oojo deal was found by Cheapflights users on 4/14. 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 5/305:40 pm
PHL
- SYD
1 stop23h 25m
Qantas Airways
Sun 6/1412:00 pm
SYD
- PHL
1 stop23h 02m
Qantas Airways
Deal found 4/14![Qantas Airways logo]()
$1,323
One-way flights from Philadelphia to SydneySearch for one-way flight options from Philadelphia to Sydney. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
Search for one-way flight options from Philadelphia to Sydney. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 8/511:35 am
PHL
- SYD
3 stops34h 15m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$580
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Thu 7/98:37 pm
PHL
- SYD
3 stops50h 33m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$888
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
Fri 9/47:36 am
PHL
- SYD
2 stops32h 44m
Japan Airlines
Deal found 4/15![Japan Airlines logo]()
$1,629
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Fri 9/46:04 pm
PHL
- SYD
3 stops59h 16m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,675
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
Fri 9/44:28 pm
PHL
- SYD
1 stop24h 27m
Qantas Airways
Deal found 4/15![Qantas Airways logo]()
$2,814
Find 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 April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,273 (oojo) |
One-way from | $580 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,385 |
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 April 18, 2026.
Use the filters below to find and compare flights from Philadelphia to Sydney that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Mon 9/14
3:10 pm-6:55 am
2 stops25h 45m
Sydney Kingsford Smith
Sun 9/27
9:30 am-10:27 am
2 stops38h 57m
$1,310
Quickest round-trip
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Tue 6/16
5:40 pm-7:05 am
1 stop23h 25m
Sydney Kingsford Smith
Mon 7/6
12:00 pm-10:57 pm
1 stop24h 57m
$1,311
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Mon 5/18
2:23 pm-6:50 am
2 stops26h 27m
Sydney Kingsford Smith
Tue 5/26
9:15 am-10:12 pm
2 stops26h 57m
$1,321
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Sat 8/1
6:23 pm-7:00 am
2 stops46h 37m
Sydney Kingsford Smith
Sat 8/15
9:30 am-7:10 pm
2 stops23h 40m
$1,390
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Tue 8/4
6:10 am-6:55 am
2 stops34h 45m
Sydney Kingsford Smith
Tue 9/1
9:30 am-12:50 am
2 stops29h 20m
$1,397
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Tue 5/19
1:26 pm-6:55 am
3 stops27h 29m
Sydney Kingsford Smith
Sat 7/4
10:20 am-9:39 am
2 stops37h 19m
$1,447
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Mon 9/14
3:10 pm-6:50 am
2 stops25h 40m
Sydney Kingsford Smith
Sun 9/27
9:15 am-12:27 am
2 stops29h 12m
$1,463
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Sat 5/16
9:55 am-7:00 am
3 stops31h 05m
Sydney Kingsford Smith
Sat 5/23
9:30 am-11:44 pm
2 stops28h 14m
$1,582
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Mon 6/15
5:40 am-6:50 am
2 stops35h 10m
Sydney Kingsford Smith
Fri 6/26
9:15 am-6:08 am
2 stops34h 53m
$1,592
PhiladelphiaSydney
PHL - SYD
PHLSYD
Philadelphia
Thu 6/18
8:28 am-4:50 pm
2 stops42h 22m
Sydney Kingsford Smith
Sun 6/21
3:40 pm-8:00 pm
2 stops42h 20m
$1,602
Showing 1-10 of 17 resultsSorted by cheapest first
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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Philadelphia-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Sydney flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
PHL-SYD
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 10, 2026.
To ensure you get the cheapest price possible for a flight from Philadelphia to Sydney, you should look to book at least 13 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, February is the cheapest month in which you can book a flight from Philadelphia to Sydney (average of $1,059). Flying from Philadelphia to Sydney in December is currently the most expensive (average of $2,004). 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 Philadelphia to Sydney?
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 April 18, 2026.
Peruse reviews from past customers who have flown with Fiji Airways,Air New Zealand, andQantas Airways from Philadelphia to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Related info for your journey
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Philadelphia and Sydney flights
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Top 6 airlines flying from Philadelphia to Sydney
Discover the top 6 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 April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$843 | Average$1,533 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,044 | Average$1,563 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,052 | Average$1,414 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,198 | Average$1,562 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,272 | Average$1,517 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,418 | Average$1,548 | FlexibilityNo cancel fee | On-time78% |