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Cheap flights from Philadelphia to Adelaide from $1,695

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 10/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Philadelphia to Adelaide

Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
21:30 - 15:00PHL  Philadelphia-ADL Adelaide
28h 00m1 stop Doha Hamad Intl
JetBlue Logo
22:00 - 14:30ADL  Adelaide-PHL Philadelphia
30h 00m1 stop Doha Hamad Intl
$1,695JetBlue
Thu, 10 Sep - Thu, 17 Sep
Multiple Airlines Logo
21:30 - 15:00PHL  Philadelphia-ADL Adelaide
28h 00m1 stop Doha Hamad Intl
Multiple Airlines Logo
18:20 - 14:30ADL  Adelaide-PHL Philadelphia
33h 40m2 stops Perth Doha Hamad Intl
$1,712Multiple Airlines
Thu, 10 Sep - Thu, 17 Sep
Qatar Airways Logo
21:30 - 10:05PHL  Philadelphia-ADL Adelaide
47h 05m2 stops Doha Hamad Intl Melbourne
Qatar Airways Logo
18:20 - 14:30ADL  Adelaide-PHL Philadelphia
33h 40m2 stops Perth Doha Hamad Intl
$1,808Qatar Airways
Thu, 10 Sep - Thu, 17 Sep
Multiple Airlines Logo
21:30 - 15:00PHL  Philadelphia-ADL Adelaide
28h 00m1 stop Doha Hamad Intl
Multiple Airlines Logo
22:00 - 14:30ADL  Adelaide-PHL Philadelphia
30h 00m1 stop Doha Hamad Intl
$1,954Multiple Airlines
Thu, 17 Sep - Thu, 24 Sep
Multiple Airlines Logo
21:30 - 10:55PHL  Philadelphia-ADL Adelaide
47h 55m2 stops Doha Hamad Intl Sydney Kingsford Smith
Multiple Airlines Logo
22:00 - 14:30ADL  Adelaide-PHL Philadelphia
30h 00m1 stop Doha Hamad Intl
$2,018Multiple Airlines
Thu, 17 Sep - Thu, 24 Sep
Multiple Airlines Logo
21:30 - 10:55PHL  Philadelphia-ADL Adelaide
47h 55m2 stops Doha Hamad Intl Sydney Kingsford Smith
Multiple Airlines Logo
18:20 - 14:30ADL  Adelaide-PHL Philadelphia
33h 40m2 stops Perth Doha Hamad Intl
$2,033Multiple Airlines
Thu, 17 Sep - Thu, 24 Sep
United Airlines Logo
09:45 - 09:30PHL  Philadelphia-ADL Adelaide
32h 15m2 stops Chicago O'Hare Intl San Francisco
United Airlines Logo
14:55 - 07:45ADL  Adelaide-PHL Philadelphia
32h 20m1 stop San Francisco
$2,065United Airlines
Mon, 28 Dec - Wed, 13 Jan
United Airlines Logo
09:45 - 09:30PHL  Philadelphia-ADL Adelaide
32h 15m2 stops Chicago O'Hare Intl San Francisco
United Airlines Logo
14:55 - 12:10ADL  Adelaide-PHL Philadelphia
36h 45m2 stops San Francisco Houston George Bush Intcntl
$2,072United Airlines
Mon, 28 Dec - Wed, 13 Jan
United Airlines Logo
09:30 - 09:30PHL  Philadelphia-ADL Adelaide
32h 30m1 stop San Francisco
United Airlines Logo
06:10 - 21:20ADL  Adelaide-PHL Philadelphia
30h 40m2 stops Brisbane San Francisco
$2,079United Airlines
Mon, 28 Dec - Tue, 12 Jan
United Airlines Logo
06:26 - 09:30PHL  Philadelphia-ADL Adelaide
59h 34m2 stops Chicago O'Hare Intl San Francisco
United Airlines Logo
14:55 - 07:45ADL  Adelaide-PHL Philadelphia
32h 20m1 stop San Francisco
$2,097United Airlines
Sun, 27 Dec - Mon, 11 Jan

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Qatar Airways flights from Philadelphia to Adelaide

Our best Qatar Airways deals on Philadelphia to Adelaide flight tickets
Qatar Airways
10 Sept
PHL21:30Philadelphia
47h 05m
2 stops
ADL10:05Adelaide
17 Sept
ADL18:20Adelaide
33h 40m
2 stops
PHL14:30Philadelphia
$1,808
Qatar Airways
27 Dec
PHL20:40Philadelphia
28h 55m
1 stop
ADL17:05Adelaide
12 Jan
ADL19:50Adelaide
34h 40m
2 stops
PHL15:00Philadelphia
$2,430
Qatar Airways
27 Dec
PHL20:40Philadelphia
28h 55m
1 stop
ADL17:05Adelaide
8 Jan
ADL19:50Adelaide
34h 40m
2 stops
PHL15:00Philadelphia
$3,280

United Airlines flights from Philadelphia to Adelaide

Our best United Airlines deals on Philadelphia to Adelaide flight tickets
United Airlines
28 Dec
PHL09:30Philadelphia
32h 30m
1 stop
ADL09:30Adelaide
13 Jan
ADL14:55Adelaide
21h 55m
1 stop
PHL21:20Philadelphia
$2,065
United Airlines
28 Dec
PHL09:45Philadelphia
32h 15m
2 stops
ADL09:30Adelaide
13 Jan
ADL14:55Adelaide
36h 45m
2 stops
PHL12:10Philadelphia
$2,072
United Airlines
28 Dec
PHL09:30Philadelphia
32h 30m
1 stop
ADL09:30Adelaide
12 Jan
ADL06:10Adelaide
30h 40m
2 stops
PHL21:20Philadelphia
$2,079

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 11 August 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
Fastest return journey

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Thu 10/9

21:30-15:00

1 stop28h 00m

Adelaide

Thu 17/9

22:00-14:30

1 stop30h 00m

$1,695

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Thu 10/9

21:30-15:00

1 stop28h 00m

Adelaide

Thu 17/9

18:20-14:30

2 stops33h 40m

$1,712

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Thu 10/9

21:30-10:05

2 stops47h 05m

Adelaide

Thu 17/9

18:20-14:30

2 stops33h 40m

$1,808

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Thu 17/9

21:30-15:00

1 stop28h 00m

Adelaide

Thu 24/9

22:00-14:30

1 stop30h 00m

$1,954

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Thu 17/9

21:30-10:55

2 stops47h 55m

Adelaide

Thu 24/9

22:00-14:30

1 stop30h 00m

$2,018

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Thu 17/9

21:30-10:55

2 stops47h 55m

Adelaide

Thu 24/9

18:20-14:30

2 stops33h 40m

$2,033

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Mon 28/12

09:45-09:30

2 stops32h 15m

Adelaide

Wed 13/1

14:55-07:45

1 stop32h 20m

$2,065

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Mon 28/12

09:45-09:30

2 stops32h 15m

Adelaide

Wed 13/1

14:55-12:10

2 stops36h 45m

$2,072

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Mon 28/12

09:30-09:30

1 stop32h 30m

Adelaide

Tue 12/1

06:10-21:20

2 stops30h 40m

$2,079

PhiladelphiaAdelaide

PHL Philadelphia - ADL Adelaide

PHLADL

Philadelphia

Sun 27/12

06:26-09:30

2 stops59h 34m

Adelaide

Mon 11/1

14:55-07:45

1 stop32h 20m

$2,097

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

28h 00m

Direct flights

None
The fastest flight from Philadelphia to Adelaide takes 28h 00m
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 28h 00m.

  • 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
Stirling

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.

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