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$726+ Cheap flights from Philadelphia (PHL) to Adelaide (ADL)

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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ADL
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Philadelphia to Adelaide

Cheapest flights from Philadelphia to Adelaide
Explore the most affordable flight options available from Philadelphia to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/3. 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 12/298:15 amPHL - ADL
1 stop33h 45mUnited Airlines
Wed 1/282:55 pmADL - PHL
1 stop22h 27mUnited Airlines
Deal found 12/3$1,361
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Sun 12/285:00 pmPHL - ADL
2 stops49h 00mUnited Airlines
Wed 1/282:55 pmADL - PHL
2 stops34h 12mUnited Airlines
Deal found 12/3$1,384
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/298:15 amPHL - ADL
1 stop33h 45mUnited Airlines
Mon 3/161:55 pmADL - PHL
1 stop31h 50mUnited Airlines
Deal found 12/3$1,405
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/298:15 amPHL - ADL
1 stop33h 45mUnited Airlines
Wed 3/251:55 pmADL - PHL
1 stop22h 06mUnited Airlines
Deal found 12/2$1,406
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Sun 12/286:34 pmPHL - ADL
2 stops47h 26mUnited Airlines
Mon 2/22:55 pmADL - PHL
2 stops34h 13mUnited Airlines
Deal found 12/3$1,428
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Sun 12/286:34 pmPHL - ADL
2 stops47h 26mUnited Airlines
Wed 3/251:55 pmADL - PHL
2 stops34h 49mUnited Airlines
Deal found 12/2$1,429
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/258:15 amPHL - ADL
1 stop33h 45mUnited Airlines
Wed 1/282:55 pmADL - PHL
1 stop22h 27mUnited Airlines
Deal found 12/3$1,436
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/298:15 amPHL - ADL
1 stop33h 45mUnited Airlines
Sat 3/141:55 pmADL - PHL
1 stop31h 50mUnited Airlines
Deal found 12/3$1,455
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/296:25 pmPHL - ADL
1 stop23h 35mUnited Airlines
Sat 3/281:55 pmADL - PHL
1 stop31h 50mUnited Airlines
Deal found 12/2$1,456

Find flight deals from Philadelphia to Adelaide

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Adelaide (ADL). 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,149
(United Airlines)

One-way from

$726
(Kiwi.com)
Provider with most accurate pricing for Philadelphia-Adelaide flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Adelaide flights.
Search Deals
From Philadelphia to Adelaide
Search Deals
One-way flight from Philadelphia to Adelaide
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Adelaide 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 December 4, 2025.
Use the filters below to find and compare flights from Philadelphia to Adelaide that are best for you.

Fly from

Philadelphia

Fly to

Adelaide

Route

Depart

Return

Price

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sat 1/31

8:35 am-9:30 am

1 stop33h 25m

Adelaide

Mon 3/16

1:55 pm-9:31 pm

1 stop22h 06m

$1,199

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Mon 2/9

1:10 pm-9:30 am

2 stops28h 50m

Adelaide

Sat 3/28

1:55 pm-7:15 am

1 stop31h 50m

$1,204

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Fri 2/6

7:45 pm-9:30 am

2 stops46h 15m

Adelaide

Sat 3/28

1:55 pm-12:18 pm

2 stops36h 53m

$1,272

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Tue 1/27

3:35 pm-10:55 am

2 stops27h 50m

Adelaide

Fri 3/13

6:00 am-8:00 pm

2 stops28h 30m

$1,340

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 2/1

2:30 pm-4:25 pm

2 stops34h 25m

Adelaide

Tue 3/17

9:00 am-7:25 pm

2 stops24h 55m

$1,340

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Mon 2/2

2:30 pm-1:45 pm

2 stops31h 45m

Adelaide

Thu 3/19

9:00 am-7:25 pm

2 stops24h 55m

$1,340

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Tue 2/3

2:30 pm-6:15 pm

2 stops36h 15m

Adelaide

Fri 3/13

12:35 pm-11:50 pm

2 stops25h 45m

$1,340

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sat 2/14

2:18 pm-7:15 pm

2 stops37h 27m

Adelaide

Sat 4/4

2:25 pm-7:25 pm

2 stops43h 30m

$1,340

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Fri 2/6

2:30 pm-4:25 pm

2 stops34h 25m

Adelaide

Tue 3/31

6:00 am-9:44 pm

2 stops30h 14m

$1,340

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 2/8

2:30 pm-10:30 pm

2 stops40h 30m

Adelaide

Sun 3/29

12:40 pm-7:05 am

2 stops32h 55m

$1,340

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 15 results
1
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Compare providers for flights from Philadelphia to Adelaide

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 Adelaide in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Adelaide flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Adelaide flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Philadelphia-Adelaide flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Adelaide flights, Cheapflights users trust eDreams the most. eDreams 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-Adelaide 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 Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide 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 Adelaide

What is the cheapest time of day to fly from PHL to ADL?

Find hourly flight availability from Philadelphia to Adelaide. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

It’s optimal to fly from Philadelphia to Adelaide in the morning. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight in the afternoon.

Related info for your journey

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

    A quick flight from Philadelphia to Adelaide can take about 27h 50m. United Airlines provides one of the quickest options available for as low as $1,340. Philadelphia and Adelaide are separated by a distance of 10557 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Philadelphia to Adelaide by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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