$924 Cheap Flights from Adelaide (ADL) to Philadelphia (PHL)

View $924 flight on Thu, Jan 29, 2026Opens in a new window

Popular airlines from Adelaide, SA Airport (ADL) to Philadelphia Intl. Airport (PHL)

Cheap Flights from Adelaide to Philadelphia (ADL-PHL)

Prices were available within the past 7 days and start at $924 for one-way flights and $1,819 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Fri, Oct 31 - Thu, Nov 6
ADL
Adelaide
PHL
Philadelphia
$1,819 Roundtrip, found 5 days ago
$1,819
Roundtrip
found 5 days ago
Select Qatar Airways flight, departing Fri, Oct 31 from Adelaide to Philadelphia, returning Thu, Nov 6, priced at $1,819 found 5 days ago
Qatar Airways
Sat, Nov 22 - Sat, Nov 29
ADL
Adelaide
PHL
Philadelphia
$1,851 Roundtrip, found 5 days ago
$1,851
Roundtrip
found 5 days ago
Select Qatar Airways flight, departing Sat, Nov 22 from Adelaide to Philadelphia, returning Sat, Nov 29, priced at $1,851 found 5 days ago
Qatar Airways
Sat, Nov 22 - Sat, Nov 29
ADL
Adelaide
PHL
Philadelphia
$2,099 Roundtrip, found 5 days ago
$2,099
Roundtrip
found 5 days ago
Select Qatar Airways flight, departing Sat, Nov 22 from Adelaide to Philadelphia, returning Sat, Nov 29, priced at $2,099 found 5 days ago
Virgin Australia
Fri, Oct 31 - Thu, Nov 6
ADL
Adelaide
PHL
Philadelphia
$2,184 Roundtrip, found 5 days ago
$2,184
Roundtrip
found 5 days ago
Select Virgin Australia flight, departing Fri, Oct 31 from Adelaide to Philadelphia, returning Thu, Nov 6, priced at $2,184 found 5 days ago
Air Canada
Fri, Oct 31 - Thu, Nov 6
ADL
Adelaide
PHL
Philadelphia
$2,185 Roundtrip, found 5 days ago
$2,185
Roundtrip
found 5 days ago
Select Air Canada flight, departing Fri, Oct 31 from Adelaide to Philadelphia, returning Thu, Nov 6, priced at $2,185 found 5 days ago
Qantas Airways
Fri, Oct 31 - Thu, Nov 6
ADL
Adelaide
PHL
Philadelphia
$2,202 Roundtrip, found 5 days ago
$2,202
Roundtrip
found 5 days ago
Select Qantas Airways flight, departing Fri, Oct 31 from Adelaide to Philadelphia, returning Thu, Nov 6, priced at $2,202 found 5 days ago
Air Canada
Sat, Nov 22 - Sat, Nov 29
ADL
Adelaide
PHL
Philadelphia
$2,229 Roundtrip, found 5 days ago
$2,229
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sat, Nov 22 from Adelaide to Philadelphia, returning Sat, Nov 29, priced at $2,229 found 5 days ago
Air Canada
Sat, Nov 22 - Sat, Nov 29
ADL
Adelaide
PHL
Philadelphia
$2,230 Roundtrip, found 5 days ago
$2,230
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sat, Nov 22 from Adelaide to Philadelphia, returning Sat, Nov 29, priced at $2,230 found 5 days ago
Air Canada
Fri, Oct 31 - Thu, Nov 6
ADL
Adelaide
PHL
Philadelphia
$2,234 Roundtrip, found 5 days ago
$2,234
Roundtrip
found 5 days ago
Select Air Canada flight, departing Fri, Oct 31 from Adelaide to Philadelphia, returning Thu, Nov 6, priced at $2,234 found 5 days ago
Air New Zealand
Fri, Oct 31 - Thu, Nov 6
ADL
Adelaide
PHL
Philadelphia
$2,723 Roundtrip, found 5 days ago
$2,723
Roundtrip
found 5 days ago
Select Air New Zealand flight, departing Fri, Oct 31 from Adelaide to Philadelphia, returning Thu, Nov 6, priced at $2,723 found 5 days ago

Frequently asked questions

How much does a flight from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL) cost?
Secure a cheap one-way flight from $924 or cheap return flight from $1,819 from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL)?
October is the most affordable month to fly from ADL to PHL. Timing your trip outside of the busy season is often the key to landing a great deal.
What is the cheapest airline that flies from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ADL to PHL flight.
How many flights per day from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL)?
Direct flights from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ADL to PHL?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL)?
Choose a flight from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL) that takes off before 3 PM to reduce the likelihood of delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL) last-minute?
Last-minute bookings from ADL to PHL are typically more expensive. For the lowest prices, start looking for flights well in advance. That being said, if you can play around with your travel dates, it's possible to land a cheap fare right before your trip.
Is it cheaper to book an ADL to PHL flight and hotel package?
You can save money by booking an ADL to PHL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've chosen your preferred flights and accommodations, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Adelaide Airport (ADL) to Philadelphia Intl. Airport (PHL)?
You can usually cancel or reschedule your ADL to PHL flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Adelaide
Destination airport
Philadelphia Intl.
Roundtrip price
$1,818
Distance
10563 mi

Book with confidence

Adelaide to Philadelphia Flights

The cheapest times to fly from Adelaide to Philadelphia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Adelaide to Philadelphia are during the month of October. You can find some of the cheapest flights from Adelaide to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Adelaide to Philadelphia

Sunday is one of the best days to book for cheap flights from Adelaide to Philadelphia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Adelaide to Philadelphia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Adelaide to Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from $924 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Adelaide to Philadelphia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Adelaide to Philadelphia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Adelaide to Philadelphia Flights

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*Available to One Key members.