Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Philadelphia to Adelaide from $1,377

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Adelaide departing on 8/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Philadelphia to Adelaide

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qatar Airways Logo
9:30 pm - 3:00 pm
PHL
-
ADL
28h 00m
1 stop
Qatar Airways Logo
7:40 am - 3:05 pm
ADL
-
PHL
44h 55m
2 stops
$1,377Qatar Airways
Wed, Aug 5 - Wed, Aug 12
Qatar Airways Logo
9:30 pm - 7:10 pm
PHL
-
ADL
32h 10m
2 stops
Qatar Airways Logo
6:20 pm - 3:05 pm
ADL
-
PHL
34h 15m
2 stops
$1,405Qatar Airways
Wed, Aug 5 - Wed, Aug 12
Multiple Airlines Logo
12:40 pm - 2:10 pm
PHL
-
ADL
34h 00m
3 stops
Multiple Airlines Logo
2:55 pm - 5:16 am
ADL
-
PHL
29h 51m
2 stops
$1,456Multiple Airlines
Sun, Dec 6 - Wed, Dec 30
United Airlines Logo
9:25 am - 11:05 am
PHL
-
ADL
36h 10m
2 stops
United Airlines Logo
6:05 am - 12:23 pm
ADL
-
PHL
43h 48m
3 stops
$1,504United Airlines
Wed, Aug 5 - Wed, Aug 12
Multiple Airlines Logo
12:40 pm - 2:10 pm
PHL
-
ADL
34h 00m
3 stops
Multiple Airlines Logo
2:55 pm - 12:25 pm
ADL
-
PHL
61h 00m
3 stops
$1,516Multiple Airlines
Sun, Dec 6 - Wed, Dec 30
Qatar Airways Logo
9:30 pm - 3:00 pm
PHL
-
ADL
28h 00m
1 stop
Qatar Airways Logo
10:00 pm - 3:05 pm
ADL
-
PHL
30h 35m
1 stop
$2,286Qatar Airways
Wed, Aug 5 - Wed, Aug 12
Qatar Airways Logo
8:40 pm - 5:05 pm
PHL
-
ADL
28h 55m
1 stop
Qatar Airways Logo
10:00 pm - 3:00 pm
ADL
-
PHL
32h 30m
1 stop
$2,412Qatar Airways
Sun, Dec 6 - Wed, Dec 30
Qantas Airways Logo
3:13 pm - 1:45 pm
PHL
-
ADL
31h 02m
2 stops
Qantas Airways Logo
7:00 pm - 2:28 pm
ADL
-
PHL
34h 58m
2 stops
$2,614Qantas Airways
Wed, Dec 16 - Sun, Jan 17
Multiple Airlines Logo
6:40 am - 5:45 pm
PHL
-
ADL
45h 35m
3 stops
Multiple Airlines Logo
2:20 pm - 12:19 am
ADL
-
PHL
47h 29m
3 stops
$2,616Multiple Airlines
Wed, Aug 5 - Wed, Aug 12
Qantas Airways Logo
3:13 pm - 6:15 pm
PHL
-
ADL
35h 32m
2 stops
Qantas Airways Logo
7:05 am - 8:16 pm
ADL
-
PHL
28h 41m
2 stops
$2,657Qantas Airways
Wed, Dec 16 - Sat, Jan 16

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Qatar Airways flights from Philadelphia to Adelaide

Our best Qatar Airways deals on Philadelphia to Adelaide flight tickets
Qatar Airways
Aug 5
PHL9:30 pmPhiladelphia
28h 00m
1 stop
ADL3:00 pmAdelaide
Aug 12
ADL7:40 amAdelaide
44h 55m
2 stops
PHL3:05 pmPhiladelphia
$1,377
Qatar Airways
Aug 5
PHL9:30 pmPhiladelphia
32h 10m
2 stops
ADL7:10 pmAdelaide
Aug 12
ADL6:20 pmAdelaide
34h 15m
2 stops
PHL3:05 pmPhiladelphia
$1,405
Qatar Airways
Aug 5
PHL9:30 pmPhiladelphia
28h 00m
1 stop
ADL3:00 pmAdelaide
Aug 12
ADL10:00 pmAdelaide
30h 35m
1 stop
PHL3:05 pmPhiladelphia
$2,286

United Airlines flights from Philadelphia to Adelaide

Our best United Airlines deals on Philadelphia to Adelaide flight tickets
United Airlines
Aug 5
PHL9:25 amPhiladelphia
36h 10m
2 stops
ADL11:05 amAdelaide
Aug 12
ADL6:05 amAdelaide
43h 48m
3 stops
PHL12:23 pmPhiladelphia
$1,504
United Airlines
Dec 20
PHL6:35 pmPhiladelphia
47h 25m
3 stops
ADL9:30 amAdelaide
Jan 11
ADL2:55 pmAdelaide
32h 20m
1 stop
PHL7:45 amPhiladelphia
$2,812
United Airlines
Dec 17
PHL11:39 amPhiladelphia
30h 21m
2 stops
ADL9:30 amAdelaide
Jan 6
ADL2:55 pmAdelaide
21h 55m
1 stop
PHL9:20 pmPhiladelphia
$2,862

momondo 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, momondo users made 832,500 searches. Data last updated June 23, 2026.
Use the filters below to find and compare flights from Philadelphia to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Wed 8/5

9:30 pm-3:00 pm

1 stop28h 00m

Adelaide

Wed 8/12

7:40 am-3:05 pm

2 stops44h 55m

$1,377

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Wed 8/5

9:30 pm-7:10 pm

2 stops32h 10m

Adelaide

Wed 8/12

6:20 pm-3:05 pm

2 stops34h 15m

$1,405

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 12/6

12:40 pm-2:10 pm

3 stops34h 00m

Adelaide

Wed 12/30

2:55 pm-5:16 am

2 stops29h 51m

$1,456

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Wed 8/5

9:25 am-11:05 am

2 stops36h 10m

Adelaide

Wed 8/12

6:05 am-12:23 pm

3 stops43h 48m

$1,504

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 12/6

12:40 pm-2:10 pm

3 stops34h 00m

Adelaide

Wed 12/30

2:55 pm-12:25 pm

3 stops61h 00m

$1,516
Quickest round-trip

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Wed 8/5

9:30 pm-3:00 pm

1 stop28h 00m

Adelaide

Wed 8/12

10:00 pm-3:05 pm

1 stop30h 35m

$2,286

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 12/6

8:40 pm-5:05 pm

1 stop28h 55m

Adelaide

Wed 12/30

10:00 pm-3:00 pm

1 stop32h 30m

$2,412

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Wed 12/16

3:13 pm-1:45 pm

2 stops31h 02m

Adelaide

Sun 1/17

7:00 pm-2:28 pm

2 stops34h 58m

$2,614

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Wed 8/5

6:40 am-5:45 pm

3 stops45h 35m

Adelaide

Wed 8/12

2:20 pm-12:19 am

3 stops47h 29m

$2,616

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Wed 12/16

3:13 pm-6:15 pm

2 stops35h 32m

Adelaide

Sat 1/16

7:05 am-8:16 pm

2 stops28h 41m

$2,657

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Philadelphia to Adelaide

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Adelaide according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to Adelaide (PHL to ADL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Adelaide

Fastest flight time

28h 27m

Direct flights

None
The fastest flight from Philadelphia to Adelaide takes 28h 27m
There are no direct flights from Philadelphia to Adelaide. There are no popular flight routes from Philadelphia to Adelaide.
Search flight deals

Frequently asked questions about flying from Philadelphia to Adelaide

  • How far is Philadelphia to Adelaide by plane?

    Philadelphia and Adelaide are 10557.0 mi apart from one another. A reasonable flight in good conditions will take 28h 27m.

  • When did momondo last update prices for flights from Philadelphia Airport to Adelaide Airport?

    Prices for flights from Philadelphia Airport to Adelaide Airport refresh daily.

  • How old do you have to be to fly from Philadelphia Airport to Adelaide Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to Adelaide Airport.

  • What documentation or ID do you need to fly to Adelaide Airport?

    The necessary travel and health documents for your Adelaide Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Philadelphia to Adelaide

  • How do I get Price Alerts for flights from Philadelphia to Adelaide?

    Price Alerts will notify you by email when the price for flights to Adelaide from Philadelphia decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Philadelphia to Adelaide with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Adelaide?

It is quick and easy to find Philadelphia to Adelaide flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Adelaide that suits you.

Can I find flights from Philadelphia to Adelaide with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Philadelphia to Adelaide flights to just show those with flexible booking policies.

How can momondo help me find flights from Philadelphia to Adelaide?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Adelaide from Philadelphia.

I’m not ready to book a flight from Philadelphia to Adelaide right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Adelaide from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Adelaide trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 7/23
Thu 7/30
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia