$661 Cheap Flights from Adelaide (ADL) to Chicago (ORD)

View $661 flight on Tue, Nov 4, 2025Opens in a new window

Popular airlines from Adelaide, SA Airport (ADL) to Chicago O'Hare Intl. Airport (ORD)

Cheap Flights from Adelaide to Chicago (ADL-ORD)

Prices were available within the past 7 days and start at $661 for one-way flights and $1,391 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Mar 10 - Sat, Mar 21
ADL
Adelaide
ORD
Chicago
$1,391 Roundtrip, found 3 days ago
$1,391
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Mar 10 from Adelaide to Chicago, returning Sat, Mar 21, priced at $1,391 found 3 days ago
Air Canada
Tue, Mar 10 - Sat, Mar 21
ADL
Adelaide
ORD
Chicago
$1,395 Roundtrip, found 3 days ago
$1,395
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Mar 10 from Adelaide to Chicago, returning Sat, Mar 21, priced at $1,395 found 3 days ago
Air Canada
Tue, Mar 10 - Sat, Mar 21
ADL
Adelaide
ORD
Chicago
$1,406 Roundtrip, found 3 days ago
$1,406
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Mar 10 from Adelaide to Chicago, returning Sat, Mar 21, priced at $1,406 found 3 days ago
Air Canada
Tue, Mar 10 - Sat, Mar 21
ADL
Adelaide
ORD
Chicago
$1,410 Roundtrip, found 3 days ago
$1,410
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Mar 10 from Adelaide to Chicago, returning Sat, Mar 21, priced at $1,410 found 3 days ago
United
Mon, Mar 9 - Sat, Mar 21
ADL
Adelaide
ORD
Chicago
$1,432 Roundtrip, found 1 day ago
$1,432
Roundtrip
found 1 day ago
Select United flight, departing Mon, Mar 9 from Adelaide to Chicago, returning Sat, Mar 21, priced at $1,432 found 1 day ago
Air Canada
Thu, Jan 22 - Tue, Jan 27
ADL
Adelaide
ORD
Chicago
$1,433 Roundtrip, found 4 days ago
$1,433
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Jan 22 from Adelaide to Chicago, returning Tue, Jan 27, priced at $1,433 found 4 days ago
Air Canada
Thu, Jan 22 - Tue, Jan 27
ADL
Adelaide
ORD
Chicago
$1,437 Roundtrip, found 4 days ago
$1,437
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Jan 22 from Adelaide to Chicago, returning Tue, Jan 27, priced at $1,437 found 4 days ago
Jetstar
Tue, Mar 10 - Sat, Mar 21
ADL
Adelaide
ORD
Chicago
$1,443 Roundtrip, found 3 days ago
$1,443
Roundtrip
found 3 days ago
Select Jetstar flight, departing Tue, Mar 10 from Adelaide to Chicago, returning Sat, Mar 21, priced at $1,443 found 3 days ago
Qantas Airways
Thu, Jan 22 - Tue, Jan 27
ADL
Adelaide
ORD
Chicago
$1,448 Roundtrip, found 4 days ago
$1,448
Roundtrip
found 4 days ago
Select Qantas Airways flight, departing Thu, Jan 22 from Adelaide to Chicago, returning Tue, Jan 27, priced at $1,448 found 4 days ago
American Airlines
Fri, Mar 20 - Thu, Apr 2
ADL
Adelaide
ORD
Chicago
$1,503 Roundtrip, found 15 hours ago
$1,503
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Fri, Mar 20 from Adelaide to Chicago, returning Thu, Apr 2, priced at $1,503 found 15 hours ago
Flights from Adelaide (ADL) to Chicago (ORD)
Origin airport
Adelaide
Destination airport
O'Hare Intl.
Airlines serving
Air Canada, All Nippon Airways, American Airlines, Cathay Pacific, Emirates, JetBlue Airways, Qantas Airways, Qatar Airways, United
Roundtrip price
$1,391
Distance
9908 mi

Adelaide to Chicago Flights

The cheapest times to fly from Adelaide to Chicago

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 Chicago are during the month of March. You can find some of the cheapest flights from Adelaide to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Adelaide to Chicago

Sunday is one of the best days to book for cheap flights from Adelaide to Chicago: 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 Chicago

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 Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $661 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 Chicago 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 Chicago 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.

 

Frequently asked questions

How much does a flight from Adelaide Airport (ADL) to O'Hare Intl. Airport (ORD) cost?
Grab a cheap one-way flight from $661 or cheap return flight from $1,391 from Adelaide Airport (ADL) to O'Hare Intl. Airport (ORD) 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 O'Hare Intl. Airport (ORD)?
Flying in March is a great way to save, as it's the cheapest month for flights between ADL and ORD. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Adelaide Airport (ADL) to O'Hare Intl. Airport (ORD)?
To find the cheapest airline flying from ADL to ORD, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Adelaide Airport (ADL) to O'Hare Intl. Airport (ORD)?
You'll have to catch a flight with a layover if you're traveling from Adelaide Airport (ADL) to O'Hare Intl. Airport (ORD). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from ADL to ORD?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*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 O'Hare Intl. Airport (ORD)?
To avoid potential delays on the Adelaide Airport (ADL) to O'Hare Intl. Airport (ORD) route, travel before 3 PM. Later flights have a 22% higher chance of being 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 O'Hare Intl. Airport (ORD) last-minute?
Last-minute fares from ADL to ORD are generally more expensive. To lock in the best prices, start searching for flights well ahead of time. That said, if you're flexible with your travel dates, you may score a cheap fare right before your trip.
Is it cheaper to book an ADL to ORD flight and hotel package?
Securing an ADL to ORD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our wide range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Adelaide Airport (ADL) to O'Hare Intl. Airport (ORD)?
In most cases, you're able to reschedule or cancel your ADL to ORD flight. However, there may be additional fees, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further information, head to our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.