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$1,164+ Cheap flights from Illinois to Adelaide (ADL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Illinois to Adelaide

Keep the following information in mind while searching for Illinois to Adelaide flight deals. Data was last updated September 17, 2025.

Round-trip from

$1,164
(Trip.com)

Popular in

December

Cheapest in

February

Average price

$1,836
From Illinois to Adelaide
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($314 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($77 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 September 17, 2025.

This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:25 amORD - ADL
2 stops36h 00mMultiple Airlines
Fri 11/1411:55 amADL - ORD
2 stops27h 35mMultiple Airlines
Deal found 9/14$1,164
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:10 amORD - ADL
2 stops36h 15mAir New Zealand
Sun 11/911:55 amADL - ORD
2 stops33h 35mAir New Zealand
Deal found 9/16$1,311
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/203:40 pmORD - ADL
2 stops27h 45mAir New Zealand
Mon 11/1011:55 amADL - ORD
2 stops25h 52mAir New Zealand
Deal found 9/16$1,577
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/296:23 pmORD - ADL
2 stops32h 22mQantas Airways
Sun 12/146:05 amADL - ORD
2 stops26h 32mQantas Airways
Deal found 9/15$1,681
This oojo deal was found by Cheapflights users on 9/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:05 pmORD - ADL
2 stops47h 20mAir New Zealand
Sun 11/911:55 amADL - ORD
2 stops35h 04mAir New Zealand
Deal found 9/17$1,819
This Expedia deal was found by Cheapflights users on 9/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/263:40 pmORD - ADL
2 stops29h 25mMultiple Airlines
Sun 11/96:00 amADL - ORD
3 stops30h 00mMultiple Airlines
Deal found 9/16$1,918
This Booking.com deal was found by Cheapflights users on 9/15. 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 11/291:10 pmORD - ADL
2 stops29h 15mAir Canada
Sun 12/146:00 amADL - ORD
3 stops32h 35mAir Canada
Deal found 9/15$1,934
This Air Canada deal was found by Cheapflights users on 9/14. 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 10/263:40 pmORD - ADL
2 stops30h 45mAir Canada
Fri 11/146:00 amADL - ORD
3 stops30h 00mAir Canada
Deal found 9/14$1,936
This Orbitz deal was found by Cheapflights users on 9/16. 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.
Mon 10/209:12 pmORD - ADL
3 stops49h 13mAir Canada
Mon 11/106:10 amADL - ORD
2 stops27h 04mAir Canada
Deal found 9/16$1,948

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 September 17, 2025.
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

Sun 10/26

7:25 am-10:55 am

2 stops36h 00m

Adelaide

Fri 11/14

11:55 am-11:00 pm

2 stops27h 35m

$1,164

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 10/26

7:10 am-10:55 am

2 stops36h 15m

Adelaide

Sun 11/9

11:55 am-5:00 am

2 stops33h 35m

$1,311

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 10/20

3:40 pm-10:55 am

2 stops27h 45m

Adelaide

Mon 11/10

11:55 am-9:17 pm

2 stops25h 52m

$1,577

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 11/29

6:23 pm-7:15 pm

2 stops32h 22m

Adelaide

Sun 12/14

6:05 am-4:07 pm

2 stops26h 32m

$1,681

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 10/19

8:05 pm-10:55 am

2 stops47h 20m

Adelaide

Sun 11/9

11:55 am-6:29 am

2 stops35h 04m

$1,821

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 10/26

3:40 pm-12:35 pm

2 stops29h 25m

Adelaide

Sun 11/9

6:00 am-7:30 pm

3 stops30h 00m

$1,918

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 10/26

3:40 pm-1:55 pm

2 stops30h 45m

Adelaide

Fri 11/14

6:00 am-7:30 pm

3 stops30h 00m

$1,936

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 10/20

9:12 pm-1:55 pm

3 stops49h 13m

Adelaide

Mon 11/10

6:10 am-4:44 pm

2 stops27h 04m

$1,948

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 10/26

1:19 pm-1:55 pm

3 stops33h 06m

Adelaide

Sun 11/9

6:00 am-7:30 pm

3 stops30h 00m

$1,952

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 10/19

7:41 pm-10:30 pm

2 stops35h 19m

Adelaide

Sun 11/9

6:00 am-7:30 pm

3 stops30h 00m

$2,045

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 12 results
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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

What is the cheapest time of day to fly from IL to ADL?

Find hourly flight availability from Illinois to Adelaide. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

When flying from Illinois to Adelaide, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 New Zealand and Qantas Airways fly from Illinois to Adelaide in about 32h 22m. The time it takes to get you to your destination can typically vary by up to 3h 53m. There are 9903 mi between Illinois and Adelaide. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

  • What is the cheapest month to book a flight from Illinois to Adelaide?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Adelaide (average of $1,214). Flying from Illinois to Adelaide in December is currently the most expensive (average of $2,057). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Adelaide?

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

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Top 3 airlines flying from Illinois to Adelaide

Discover the top 3 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$987Average$1,158FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,303Average$1,422FlexibilityNo cancel feeOn-time78%
Fiji AirwaysCheapest$1,351Average$1,438FlexibilityNo cancel feeOn-time74%

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