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Cheap flights from Philadelphia to Adelaide from $2,089

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Adelaide departing on 8/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
16:28 - 11:05
PHL
-
ADL
29h 07m
2 stops
Qantas Airways Logo
06:00 - 18:34
ADL
-
PHL
26h 04m
2 stops
$2,089Qantas Airways
Tue, 8 Sep - Tue, 15 Sep
United Airlines Logo
09:25 - 11:05
PHL
-
ADL
36h 10m
2 stops
United Airlines Logo
06:05 - 01:29
ADL
-
PHL
32h 54m
2 stops
$2,090United Airlines
Sun, 14 Jun - Wed, 8 Jul
United Airlines Logo
09:25 - 11:05
PHL
-
ADL
36h 10m
2 stops
United Airlines Logo
06:00 - 17:17
ADL
-
PHL
24h 47m
2 stops
$2,100United Airlines
Sun, 14 Jun - Tue, 7 Jul
United Airlines Logo
06:00 - 11:05
PHL
-
ADL
39h 35m
2 stops
United Airlines Logo
06:40 - 05:31
ADL
-
PHL
36h 21m
3 stops
$2,109United Airlines
Tue, 16 Jun - Mon, 6 Jul
United Airlines Logo
06:00 - 11:05
PHL
-
ADL
39h 35m
2 stops
United Airlines Logo
20:00 - 01:29
ADL
-
PHL
42h 59m
2 stops
$2,118United Airlines
Tue, 16 Jun - Tue, 7 Jul
Qantas Airways Logo
17:43 - 11:05
PHL
-
ADL
27h 52m
2 stops
Qantas Airways Logo
06:00 - 18:34
ADL
-
PHL
26h 04m
2 stops
$2,131Qantas Airways
Mon, 7 Sep - Wed, 16 Sep
United Airlines Logo
09:25 - 10:55
PHL
-
ADL
36h 00m
2 stops
United Airlines Logo
20:00 - 12:23
ADL
-
PHL
53h 53m
3 stops
$2,135United Airlines
Tue, 8 Sep - Tue, 15 Sep
Multiple Airlines Logo
18:23 - 17:15
PHL
-
ADL
33h 22m
2 stops
Multiple Airlines Logo
06:05 - 01:29
ADL
-
PHL
32h 54m
2 stops
$2,143Multiple Airlines
Sun, 14 Jun - Wed, 8 Jul
United Airlines Logo
06:00 - 10:55
PHL
-
ADL
39h 25m
2 stops
United Airlines Logo
06:05 - 12:25
ADL
-
PHL
43h 50m
3 stops
$2,145United Airlines
Sun, 17 May - Sun, 24 May
United Airlines Logo
18:23 - 11:05
PHL
-
ADL
27h 12m
2 stops
United Airlines Logo
06:05 - 05:31
ADL
-
PHL
36h 56m
3 stops
$2,160United Airlines
Sun, 14 Jun - Fri, 10 Jul

Qantas Airways flights from Philadelphia to Adelaide

Our best Qantas Airways deals on Philadelphia to Adelaide flight tickets
Qantas Airways
8 Sept
PHL16:28Philadelphia
29h 07m
2 stops
ADL11:05Adelaide
15 Sept
ADL06:00Adelaide
26h 04m
2 stops
PHL18:34Philadelphia
$2,089
Qantas Airways
7 Sept
PHL17:43Philadelphia
27h 52m
2 stops
ADL11:05Adelaide
16 Sept
ADL06:00Adelaide
26h 04m
2 stops
PHL18:34Philadelphia
$2,131
Qantas Airways
13 June
PHL15:20Philadelphia
28h 35m
2 stops
ADL09:25Adelaide
8 July
ADL06:00Adelaide
25h 58m
2 stops
PHL18:28Philadelphia
$2,252

United Airlines flights from Philadelphia to Adelaide

Our best United Airlines deals on Philadelphia to Adelaide flight tickets
United Airlines
14 June
PHL09:25Philadelphia
36h 10m
2 stops
ADL11:05Adelaide
8 July
ADL06:05Adelaide
32h 54m
2 stops
PHL01:29Philadelphia
$2,090
United Airlines
14 June
PHL09:25Philadelphia
36h 10m
2 stops
ADL11:05Adelaide
7 July
ADL06:00Adelaide
24h 47m
2 stops
PHL17:17Philadelphia
$2,100
United Airlines
16 June
PHL06:00Philadelphia
39h 35m
2 stops
ADL11:05Adelaide
6 July
ADL06:40Adelaide
36h 21m
3 stops
PHL05:31Philadelphia
$2,109

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 23 April 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 return flight

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Tue 8/9

16:28-11:05

2 stops29h 07m

Adelaide

Tue 15/9

06:00-18:34

2 stops26h 04m

$2,089

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 14/6

09:25-11:05

2 stops36h 10m

Adelaide

Wed 8/7

06:05-01:29

2 stops32h 54m

$2,090

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 14/6

09:25-11:05

2 stops36h 10m

Adelaide

Tue 7/7

06:00-17:17

2 stops24h 47m

$2,100

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Tue 16/6

06:00-11:05

2 stops39h 35m

Adelaide

Mon 6/7

06:40-05:31

3 stops36h 21m

$2,109

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Tue 16/6

06:00-11:05

2 stops39h 35m

Adelaide

Tue 7/7

20:00-01:29

2 stops42h 59m

$2,118
Fastest return journey

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Mon 7/9

17:43-11:05

2 stops27h 52m

Adelaide

Wed 16/9

06:00-18:34

2 stops26h 04m

$2,131

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Tue 8/9

09:25-10:55

2 stops36h 00m

Adelaide

Tue 15/9

20:00-12:23

3 stops53h 53m

$2,135

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 14/6

18:23-17:15

2 stops33h 22m

Adelaide

Wed 8/7

06:05-01:29

2 stops32h 54m

$2,143

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 17/5

06:00-10:55

2 stops39h 25m

Adelaide

Sun 24/5

06:05-12:25

3 stops43h 50m

$2,145

PhiladelphiaAdelaide

PHL - ADL

PHLADL

Philadelphia

Sun 14/6

18:23-11:05

2 stops27h 12m

Adelaide

Fri 10/7

06:05-05:31

3 stops36h 56m

$2,160

Flights are sorted by cheapest return 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 return 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 12m

Direct flights

None
The fastest flight from Philadelphia to Adelaide takes 27h 12m
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?

    There are 16989.8 km between Philadelphia and Adelaide. A reasonable flight in good conditions will take 27h 12m.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify 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 required travel and health documents for your Adelaide Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Adelaide Airport. We recommend that you seek guidance from your airline or a reliable 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?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Philadelphia from Adelaide. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling 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?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Adelaide from Philadelphia.

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

All flight searches from Philadelphia to Adelaide on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Philadelphia to Adelaide flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Adelaide, momondo offers a useful price alert feature which will track prices for flights to Adelaide from Philadelphia and alert you when they change.

An easier way to manage your Adelaide trip

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