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

View AU$1,777 flight on Sat, 1 May 2027Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Tue, 1 Sept - Thu, 17 Sept
PHL
Philadelphia
ADL
Adelaide
AU$1,861 Return, found 5 days ago
AU$1,861
Return
found 5 days ago
Select Qatar Airways flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Thu, 17 Sept, priced at AU$1,861 found 5 days ago
Qatar Airways
Tue, 1 Sept - Sat, 12 Sept
PHL
Philadelphia
ADL
Adelaide
AU$1,922 Return, found 6 days ago
AU$1,922
Return
found 6 days ago
Select Qatar Airways flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Sat, 12 Sept, priced at AU$1,922 found 6 days ago
Qatar Airways
Tue, 1 Sept - Mon, 7 Sept
PHL
Philadelphia
ADL
Adelaide
AU$2,111 Return, found 6 days ago
AU$2,111
Return
found 6 days ago
Select Qatar Airways flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Mon, 7 Sept, priced at AU$2,111 found 6 days ago
United
Tue, 1 Sept - Wed, 16 Sept
PHL
Philadelphia
ADL
Adelaide
AU$2,120 Return, found 6 days ago
AU$2,120
Return
found 6 days ago
Select United flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Wed, 16 Sept, priced at AU$2,120 found 6 days ago
United
Tue, 1 Sept - Wed, 16 Sept
PHL
Philadelphia
ADL
Adelaide
AU$2,130 Return, found 6 days ago
AU$2,130
Return
found 6 days ago
Select United flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Wed, 16 Sept, priced at AU$2,130 found 6 days ago
United
Tue, 1 Sept - Wed, 9 Sept
PHL
Philadelphia
ADL
Adelaide
AU$2,133 Return, found 6 days ago
AU$2,133
Return
found 6 days ago
Select United flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Wed, 9 Sept, priced at AU$2,133 found 6 days ago
United
Tue, 1 Sept - Wed, 16 Sept
PHL
Philadelphia
ADL
Adelaide
AU$2,138 Return, found 6 days ago
AU$2,138
Return
found 6 days ago
Select United flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Wed, 16 Sept, priced at AU$2,138 found 6 days ago
American Airlines
Tue, 1 Sept - Sun, 13 Sept
PHL
Philadelphia
ADL
Adelaide
AU$2,388 Return, found 6 days ago
AU$2,388
Return
found 6 days ago
Select American Airlines flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Sun, 13 Sept, priced at AU$2,388 found 6 days ago
Qantas Airways
Tue, 1 Sept - Wed, 16 Sept
PHL
Philadelphia
ADL
Adelaide
AU$2,558 Return, found 6 days ago
AU$2,558
Return
found 6 days ago
Select Qantas Airways flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Wed, 16 Sept, priced at AU$2,558 found 6 days ago
Lufthansa
Tue, 1 Sept - Sun, 6 Sept
PHL
Philadelphia
ADL
Adelaide
AU$8,158 Return, found 6 days ago
AU$8,158
Return
found 6 days ago
Select Lufthansa flight, departing Tue, 1 Sept from Philadelphia to Adelaide, returning Sun, 6 Sept, priced at AU$8,158 found 6 days ago

Frequently asked questions

How much does a flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) cost?
You can find one-way and return flights from PHL to ADL with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when PHL to ADL ticket fares go up or down.
What is the cheapest month to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
The cheapest months to fly from PHL to ADL are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
Enter PHL to ADL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
Alaska Airlines is one of the cheapest airlines offering connecting return flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) with a layover in Seattle - Tacoma Intl. (SEA), with tickets starting from around AU$3116 for flights that can be booked for departure within the next year. These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
To find a cheap flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
There are approximately 14 connecting flights per day from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL). Some common connection points include Los Angeles Intl. (LAX), Pearson Intl. (YYZ), and San Francisco Intl. (SFO).
What is the earliest flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from PHL to ADL. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
You'll generally find the most flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) on a Monday, with around 35 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, United, and Air Canada.
What are the most popular departure times for flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
The most popular departure times for flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) are in the afternoon, from 3pm to 6pm. Many major carriers, including American Airlines, Discover Airlines and United, offer flights during this window. Many travellers prefer this time because it allows for a full day of activities before heading to the airport, and you'll arrive at your destination at a reasonable hour.
How long does it take to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
There are no nonstop flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL). Flights with one stop typically take around 23 hours 48 minutes. This journey covers a distance of approximately 17,000 kilometres. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns, so it's always a good idea to allow for some extra travel time.
Can you fly business or first class from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
Yes, you can fly business class between PHL and ADL. Airlines that offer business class service on this route include:
  • Air Canada
  • American Airlines
How do I earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) flight with Expedia?
It's easy to earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) at the last minute?
Typically, booking a last minute flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) flight and hotel package?
Securing a Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL)?
If you booked your Philadelphia, PA (PHL-Philadelphia Intl.) to Adelaide, SA (ADL) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Adelaide
Return price
AU$1,860
Distance
16901 km

Book with confidence

Your quick guide to flights from Philadelphia to Adelaide

Pick up great flights from Philadelphia to Adelaide

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Philadelphia to Adelaide. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Philadelphia to Adelaide that take around hours.

Find cheap flights from Philadelphia to Adelaide

From the great flight deals with prices currently ranging from AU$1,861 to AU$8,158, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Philadelphia to Adelaide around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Adelaide is normally in September.

Reasons to book your flight from Philadelphia to Adelaide with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Philadelphia to Adelaide across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Adelaide right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Philadelphia to Adelaide

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*Available to Expedia members.