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Cheap flights from Philadelphia to Adelaide from $1,448

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 10/31. 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 - 2:10 pm
PHL
-
ADL
50h 10m
2 stops
Qatar Airways Logo
10:00 pm - 2:40 pm
ADL
-
PHL
32h 10m
1 stop
$1,448Qatar Airways
Sat, Oct 31 - Wed, Nov 4
Qatar Airways Logo
9:30 pm - 4:30 pm
PHL
-
ADL
28h 30m
1 stop
Qatar Airways Logo
10:00 pm - 2:40 pm
ADL
-
PHL
32h 10m
1 stop
$1,485Qatar Airways
Sat, Oct 31 - Wed, Nov 4
Qatar Airways Logo
9:30 pm - 4:30 pm
PHL
-
ADL
28h 30m
1 stop
Qatar Airways Logo
10:00 pm - 2:40 pm
ADL
-
PHL
32h 10m
1 stop
$1,486Qatar Airways
Sat, Oct 31 - Wed, Nov 4
United Airlines Logo
6:36 pm - 11:10 am
PHL
-
ADL
27h 04m
2 stops
United Airlines Logo
8:00 pm - 5:30 pm
ADL
-
PHL
35h 00m
2 stops
$1,494United Airlines
Sun, Aug 30 - Sun, Sep 6
Air Canada Logo
5:05 pm - 6:10 pm
PHL
-
ADL
58h 35m
3 stops
Air Canada Logo
7:55 pm - 10:56 pm
ADL
-
PHL
42h 31m
3 stops
$1,499Air Canada
Sat, Oct 31 - Wed, Nov 4
Air Canada Logo
9:15 am - 6:10 pm
PHL
-
ADL
42h 25m
3 stops
Air Canada Logo
6:00 am - 10:56 pm
ADL
-
PHL
32h 26m
3 stops
$1,500Air Canada
Sat, Oct 31 - Wed, Nov 4
Qatar Airways Logo
9:30 pm - 8:40 pm
PHL
-
ADL
32h 40m
2 stops
Qatar Airways Logo
6:20 pm - 2:40 pm
ADL
-
PHL
35h 50m
2 stops
$1,529Qatar Airways
Sat, Oct 31 - Wed, Nov 4
American Airlines Logo
3:37 pm - 9:25 am
PHL
-
ADL
28h 18m
2 stops
American Airlines Logo
1:25 pm - 8:08 am
ADL
-
PHL
32h 13m
2 stops
$1,640American Airlines
Mon, Aug 10 - Mon, Aug 17
Multiple Airlines Logo
4:28 pm - 11:15 am
PHL
-
ADL
29h 17m
2 stops
Multiple Airlines Logo
12:00 pm - 6:34 pm
ADL
-
PHL
44h 04m
2 stops
$1,681Multiple Airlines
Mon, Aug 10 - Mon, Aug 17
Qatar Airways Logo
9:30 pm - 3:00 pm
PHL
-
ADL
28h 00m
1 stop
Qatar Airways Logo
10:00 pm - 2:30 pm
ADL
-
PHL
30h 00m
1 stop
$1,725Qatar Airways
Mon, Aug 10 - Mon, Aug 17

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Qatar Airways flights from Philadelphia to Adelaide

Our best Qatar Airways deals on Philadelphia to Adelaide flight tickets
Qatar Airways
Oct 31
PHL9:30 pmPhiladelphia
50h 10m
2 stops
ADL2:10 pmAdelaide
Nov 4
ADL10:00 pmAdelaide
32h 10m
1 stop
PHL2:40 pmPhiladelphia
$1,448
Qatar Airways
Oct 31
PHL9:30 pmPhiladelphia
28h 30m
1 stop
ADL4:30 pmAdelaide
Nov 4
ADL10:00 pmAdelaide
32h 10m
1 stop
PHL2:40 pmPhiladelphia
$1,485
Qatar Airways
Oct 31
PHL9:30 pmPhiladelphia
28h 30m
1 stop
ADL4:30 pmAdelaide
Nov 4
ADL10:00 pmAdelaide
32h 10m
1 stop
PHL2:40 pmPhiladelphia
$1,486

United Airlines flights from Philadelphia to Adelaide

Our best United Airlines deals on Philadelphia to Adelaide flight tickets
United Airlines
Aug 30
PHL6:36 pmPhiladelphia
27h 04m
2 stops
ADL11:10 amAdelaide
Sep 6
ADL8:00 pmAdelaide
35h 00m
2 stops
PHL5:30 pmPhiladelphia
$1,494
United Airlines
Oct 31
PHL9:55 amPhiladelphia
35h 35m
3 stops
ADL12:00 pmAdelaide
Nov 4
ADL6:10 amAdelaide
26h 29m
2 stops
PHL5:09 pmPhiladelphia
$2,989
United Airlines
Oct 31
PHL9:55 amPhiladelphia
35h 35m
3 stops
ADL12:00 pmAdelaide
Nov 4
ADL6:10 amAdelaide
26h 29m
2 stops
PHL5:09 pmPhiladelphia
$2,990

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 July 18, 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

Sat 10/31

9:30 pm-2:10 pm

2 stops50h 10m

Adelaide

Wed 11/4

10:00 pm-2:40 pm

1 stop32h 10m

$1,448

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sat 10/31

9:30 pm-4:30 pm

1 stop28h 30m

Adelaide

Wed 11/4

10:00 pm-2:40 pm

1 stop32h 10m

$1,485

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sat 10/31

9:30 pm-4:30 pm

1 stop28h 30m

Adelaide

Wed 11/4

10:00 pm-2:40 pm

1 stop32h 10m

$1,486

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 8/30

6:36 pm-11:10 am

2 stops27h 04m

Adelaide

Sun 9/6

8:00 pm-5:30 pm

2 stops35h 00m

$1,494

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sat 10/31

5:05 pm-6:10 pm

3 stops58h 35m

Adelaide

Wed 11/4

7:55 pm-10:56 pm

3 stops42h 31m

$1,499

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sat 10/31

9:15 am-6:10 pm

3 stops42h 25m

Adelaide

Wed 11/4

6:00 am-10:56 pm

3 stops32h 26m

$1,500

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sat 10/31

9:30 pm-8:40 pm

2 stops32h 40m

Adelaide

Wed 11/4

6:20 pm-2:40 pm

2 stops35h 50m

$1,529

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Mon 8/10

3:37 pm-9:25 am

2 stops28h 18m

Adelaide

Mon 8/17

1:25 pm-8:08 am

2 stops32h 13m

$1,640

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Mon 8/10

4:28 pm-11:15 am

2 stops29h 17m

Adelaide

Mon 8/17

12:00 pm-6:34 pm

2 stops44h 04m

$1,681
Quickest round-trip

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Mon 8/10

9:30 pm-3:00 pm

1 stop28h 00m

Adelaide

Mon 8/17

10:00 pm-2:30 pm

1 stop30h 00m

$1,725

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

27h 04m

Direct flights

None
The fastest flight from Philadelphia to Adelaide takes 27h 04m
There are no direct flights from Philadelphia to Adelaide. There are no popular flight routes from Philadelphia to Adelaide.
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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 27h 04m.

  • 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.

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