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$1,043+ Cheap flights from Adelaide (ADL) to Illinois

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — ORD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Adelaide to Illinois

Cheapest flights from Adelaide to Illinois
Explore the most affordable flight options available from Adelaide to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/202:55 pmADL - ORD
2 stops24h 35mUnited Airlines
Mon 2/2310:40 amORD - ADL
2 stops30h 20mUnited Airlines
Deal found 12/15$1,068
This Booking.com deal was found by Cheapflights users on 12/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:10 amADL - ORD
2 stops33h 19mVirgin Australia
Fri 1/29:05 pmORD - ADL
1 stop43h 55mVirgin Australia
Deal found 12/14$2,477
This Mytrip deal was found by Cheapflights users on 12/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:40 amADL - ORD
2 stops34h 55mMultiple Airlines
Fri 1/29:34 amORD - ADL
3 stops35h 36mMultiple Airlines
Deal found 12/14$3,042
This Gotogate deal was found by Cheapflights users on 12/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:55 pmADL - ORD
2 stops35h 16mAir Canada
Mon 2/232:00 pmORD - ADL
3 stops31h 25mAir Canada
Deal found 12/15$3,189
This Cathay Pacific deal was found by Cheapflights users on 12/14. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1912:00 pmADL - ORD
1 stop41h 25mCathay Pacific
Fri 1/22:35 pmORD - ADL
1 stop27h 25mCathay Pacific
Deal found 12/14$3,220

Find flight deals from Adelaide to Illinois

Keep the following information in mind while searching for Adelaide to Illinois flight deals. Data was last updated December 18, 2025.

Round-trip from

$1,043
(Qantas Airways)

Popular in

December

Cheapest in

March

Average price

$1,666
From Adelaide to Illinois
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Adelaide to Illinois 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 December 18, 2025.
Use the filters below to find and compare flights from Adelaide to Illinois that are best for you.

Fly from

Adelaide

Fly to

Illinois

Route

Depart

Return

Price

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 6/2

12:40 pm-11:55 pm

2 stops25h 45m

Chicago O'Hare Intl

Tue 8/4

5:51 pm-9:25 am

2 stops25h 04m

$1,043

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 1/31

2:55 pm-5:44 am

1 stop31h 19m

Chicago O'Hare Intl

Sat 2/7

6:29 pm-9:30 am

1 stop22h 31m

$1,115

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 1/29

7:15 am-6:52 pm

2 stops28h 07m

Chicago O'Hare Intl

Thu 2/5

4:10 pm-9:30 am

2 stops24h 50m

$1,275

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Fri 1/30

7:15 am-2:50 pm

2 stops24h 05m

Chicago O'Hare Intl

Fri 2/6

11:05 am-4:20 pm

2 stops36h 45m

$1,346

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 1/29

6:10 am-2:41 pm

2 stops25h 01m

Chicago O'Hare Intl

Thu 2/5

2:00 pm-1:55 pm

3 stops31h 25m

$1,427

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 1/31

6:10 am-2:41 pm

2 stops25h 01m

Chicago O'Hare Intl

Sat 2/7

2:00 pm-1:55 pm

3 stops31h 25m

$1,466

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 2/5

6:00 am-1:01 pm

3 stops47h 31m

Chicago O'Hare Intl

Mon 2/9

2:00 pm-7:10 pm

3 stops36h 40m

$1,484

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Best time to book a flight from Adelaide to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Adelaide 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 Adelaide to Illinois
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 Adelaide to Illinois. 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 from for flights from Adelaide to Illinois?

    Located just 4.1 mi from the city center, Adelaide (ADL) is the airport most travelers will use when flying to Illinois from Adelaide.

  • How long is the flight from Adelaide to Illinois?

    There are many flights that can get you from Adelaide to Illinois in 31h 19m. Fly via United Airlines to get the fastest option. There are 9903 mi between Adelaide and Illinois.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Adelaide to Illinois 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

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