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$863+ Cheap flights from Adelaide (ADL) to Illinois

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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Adelaide to Illinois

Keep the following information in mind while searching for Adelaide to Illinois flight deals. Data was last updated September 15, 2025.

Round-trip from

$964
(Gotogate)

One-way from

$863
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,598
From Adelaide to Illinois
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One-way flight from Adelaide to Illinois
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Highest demand for flights based on searches. 4% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2010:50 amADL - ORD
2 stops43h 40mMultiple Airlines
Sat 11/83:40 pmORD - ADL
2 stops50h 00mMultiple Airlines
Deal found 9/15$964
This Air New Zealand 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 New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:55 amADL - ORD
2 stops24h 00mAir New Zealand
Wed 11/52:30 pmORD - ADL
2 stops27h 55mAir New Zealand
Deal found 9/14$1,095
This Aunt Betty 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:00 pmADL - ORD
3 stops38h 54mAir Canada
Sat 11/83:40 pmORD - ADL
2 stops38h 20mAir Canada
Deal found 9/15$1,135
This BYOjet 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/297:55 pmADL - ORD
3 stops38h 14mAir Canada
Wed 11/53:40 pmORD - ADL
2 stops34h 00mAir Canada
Deal found 9/14$1,200
This Jettzy 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:00 pmADL - ORD
1 stop33h 00mQatar Airways
Wed 11/56:50 pmORD - ADL
2 stops44h 50mQatar Airways
Deal found 9/14$2,213
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:40 pmADL - ORD
1 stop32h 40mQatar Airways
Sat 11/86:50 pmORD - ADL
1 stop29h 45mQatar Airways
Deal found 9/15$2,280
This Qantas Airways 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:10 pmADL - ORD
2 stops23h 49mMultiple Airlines
Thu 11/66:03 pmORD - ADL
2 stops27h 07mMultiple Airlines
Deal found 9/15$6,919
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:40 amADL - ORD
2 stops32h 44mVirgin Australia
Sat 10/186:32 pmORD - ADL
2 stops26h 08mVirgin Australia
Deal found 9/15$6,926

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 September 15, 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

Mon 10/20

10:50 am-3:00 pm

2 stops43h 40m

Chicago O'Hare Intl

Sat 11/8

3:40 pm-10:10 am

2 stops50h 00m

$964

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 3/8

6:00 am-6:30 pm

3 stops29h 00m

Chicago O'Hare Intl

Wed 3/11

3:40 pm-10:30 pm

2 stops39h 20m

$1,024

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Wed 10/29

11:55 am-8:25 pm

2 stops24h 00m

Chicago O'Hare Intl

Wed 11/5

2:30 pm-10:55 am

2 stops27h 55m

$1,095

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Wed 10/29

7:55 pm-6:39 pm

3 stops38h 14m

Chicago O'Hare Intl

Wed 11/5

3:40 pm-6:10 pm

2 stops34h 00m

$1,200

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Mon 10/20

8:00 pm-7:24 pm

3 stops38h 54m

Chicago O'Hare Intl

Sat 11/8

2:00 pm-6:10 pm

3 stops35h 40m

$1,282

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 3/8

12:00 pm-1:00 pm

1 stop41h 30m

Chicago O'Hare Intl

Wed 3/11

3:40 pm-10:30 am

1 stop27h 20m

$1,305

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Mon 12/15

12:35 pm-11:50 pm

2 stops27h 45m

$863

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 9/23

6:10 am-3:00 pm

2 stops23h 20m

$955

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Mon 12/15

2:55 pm-9:07 pm

1 stop22h 42m

$1,174

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 9/23

9:40 pm-2:50 pm

1 stop31h 40m

$1,390

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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

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

Find hourly flight availability from Adelaide to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Adelaide to Illinois, 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 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 24h. Fly via Air Canada or Air New Zealand to get the fastest option. There are 9903 mi between Adelaide and Illinois. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from Adelaide to Illinois (average of $245). Flying from Adelaide to Illinois in March is currently the most expensive (average of $321). 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

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