HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Adelaide

$509+ Cheap flights from Illinois to Adelaide (ADL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Adelaide with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Adelaide

Cheapest flights from Illinois to Adelaide
Explore the most affordable flight options available from Illinois to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This Air Canada deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:40 pm
ORD
-
ADL
2 stops29h 40m
Air Canada
Mon 4/209:20 pm
ADL
-
ORD
2 stops37h 08m
Air Canada
Deal found 2/10$1,003
This Air Canada deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/213:35 pm
ORD
-
ADL
2 stops30h 00m
Multiple Airlines
Sat 4/256:55 pm
ADL
-
ORD
2 stops39h 33m
Multiple Airlines
Deal found 2/11$1,111
This Gotogate deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:50 am
ORD
-
ADL
3 stops37h 35m
Multiple Airlines
Mon 4/207:10 pm
ADL
-
ORD
3 stops38h 45m
Multiple Airlines
Deal found 2/10$1,305
This Booking.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:40 pm
ORD
-
ADL
3 stops54h 00m
Air Canada
Sat 4/256:55 pm
ADL
-
ORD
2 stops39h 33m
Air Canada
Deal found 2/11$1,313
This Ovago deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/284:45 pm
ORD
-
ADL
2 stops27h 40m
Qantas Airways
Sat 4/45:10 pm
ADL
-
ORD
2 stops38h 56m
Qantas Airways
Deal found 2/11$1,325
This Air Canada deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
ORD
-
ADL
2 stops30h 45m
Air Canada
Sat 10/316:55 pm
ADL
-
ORD
2 stops36h 16m
Air Canada
Deal found 2/8$1,365
This Orbitz deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/49:15 pm
ORD
-
ADL
3 stops48h 05m
Air Canada
Sat 4/114:30 pm
ADL
-
ORD
2 stops36h 43m
Air Canada
Deal found 2/11$1,378

Find flight deals from Illinois to Adelaide

Keep the following information in mind while searching for Illinois to Adelaide flight deals. Data was last updated February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,003
(Air Canada)

One-way from

$509
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$1,053
Provider with most accurate pricing for Chicago (CHI)-Adelaide flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Adelaide flights.
Search Deals
From Illinois to Adelaide
Search Deals
One-way flight from Illinois to Adelaide
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois 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, Cheapflights users made 2,558,603 searches. Data last updated February 12, 2026.
Use the filters below to find and compare flights from Illinois to Adelaide that are best for you.

Fly from

Illinois

Fly to

Adelaide

Route

Depart

Return

Price

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 4/13

3:40 pm-11:50 am

2 stops29h 40m

Adelaide

Mon 4/20

9:20 pm-7:58 pm

2 stops37h 08m

$1,003

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 2/21

3:35 pm-2:05 pm

2 stops30h 00m

Adelaide

Sat 4/25

6:55 pm-7:58 pm

2 stops39h 33m

$1,111

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 2/21

8:40 pm-7:10 pm

3 stops54h 00m

Adelaide

Sat 4/25

6:55 pm-7:58 pm

2 stops39h 33m

$1,313

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 4/4

9:15 pm-11:50 am

3 stops48h 05m

Adelaide

Sat 4/11

4:30 pm-2:43 pm

2 stops36h 43m

$1,378

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 4/4

3:40 pm-11:10 am

2 stops29h 00m

Adelaide

Sat 4/11

5:15 pm-2:43 pm

2 stops35h 58m

$1,412

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 8/4

6:00 am-11:35 am

2 stops39h 05m

$509

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/3

9:02 pm-11:35 am

2 stops48h 03m

$531

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 7/29

9:02 pm-4:35 pm

3 stops53h 03m

$592

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 8/1

6:20 am-11:35 am

3 stops38h 45m

$632

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 8/2

6:00 am-9:10 pm

3 stops48h 40m

$662

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 15 results
1
2

Best time to book a flight from Illinois to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Adelaide
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Adelaide. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Adelaide from Illinois?

    If you book a flight to Adelaide from Illinois, you will be flying to Adelaide, which is the city’s only airport. Adelaide (ADL) is located 4.1 mi from the center of Adelaide.

  • How long is the flight from Illinois to Adelaide?

    Airlines like Air Canada fly from Illinois to Adelaide in about 29h 40m. The time it takes to get you to your destination can typically vary by up to . There are 9903 mi between Illinois and Adelaide.

  • Can I find deals for flights from Illinois to Adelaide that include hotel bookings?

    Yes. In addition to deals on Illinois to Adelaide flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Adelaide?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Adelaide.

  • Can I find deals for business class flights from Illinois to Adelaide?

    Yes. Cheapflights offers flight deals from Illinois to Adelaide by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Illinois to Adelaide

Discover the top 4 airlines that operate flights from Illinois to Adelaide. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$941Average$1,785FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,303Average$1,534FlexibilityNo cancel feeOn-time78%
Fiji AirwaysCheapest$1,351Average$1,438FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,673Average$2,028FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.