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$667+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
1 adult, Economy
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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 November 10, 2025.

This Fareboom deal was found by Cheapflights users on 11/8. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/296:15 amORD - ADL
2 stops36h 10mAir New Zealand
Tue 12/96:05 amADL - ORD
2 stops30h 50mAir New Zealand
Deal found 11/8$1,719
This oojo deal was found by Cheapflights users on 11/9. 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.
Sat 11/156:03 pmORD - ADL
2 stops32h 12mQantas Airways
Sat 3/78:45 amADL - ORD
2 stops44h 46mQantas Airways
Deal found 11/9$1,753
This oojo deal was found by Cheapflights users on 11/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:42 amORD - ADL
2 stops31h 43mAir New Zealand
Sat 11/226:30 pmADL - ORD
2 stops40h 50mAir New Zealand
Deal found 11/8$1,804
This Expedia deal was found by Cheapflights users on 11/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/299:20 pmORD - ADL
3 stops48h 05mAir Canada
Tue 12/96:00 amADL - ORD
2 stops25h 11mAir Canada
Deal found 11/8$2,053
This Mytrip deal was found by Cheapflights users on 11/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/152:35 pmORD - ADL
2 stops36h 10mMultiple Airlines
Sat 11/2210:35 amADL - ORD
3 stops35h 27mMultiple Airlines
Deal found 11/8$2,069
This United Airlines deal was found by Cheapflights users on 11/9. 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 11/155:16 pmORD - ADL
2 stops27h 14mUnited Airlines
Sat 3/72:55 pmADL - ORD
1 stop21h 30mUnited Airlines
Deal found 11/9$2,120
This FlightHub deal was found by Cheapflights users on 11/9. 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 11/159:20 pmORD - ADL
3 stops48h 05mAir Canada
Sat 3/76:10 amADL - ORD
2 stops25h 01mAir Canada
Deal found 11/9$2,128
This BestPriceTravel deal was found by Cheapflights users on 11/8. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:28 amORD - ADL
2 stops35h 02mQantas Airways
Tue 12/304:30 pmADL - ORD
2 stops40h 44mQantas Airways
Deal found 11/8$2,192
This Mytrip deal was found by Cheapflights users on 11/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:00 amORD - ADL
3 stops42h 15mMultiple Airlines
Tue 12/306:00 amADL - ORD
2 stops25h 11mMultiple Airlines
Deal found 11/8$2,268
This oojo deal was found by Cheapflights users on 11/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/219:10 pmORD - ADL
2 stops45h 15mAir New Zealand
Fri 1/94:30 pmADL - ORD
2 stops44h 25mAir New Zealand
Deal found 11/10$2,468

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 November 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,156
(Air Canada)

One-way from

$667
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,567
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. 10% potential increase in price ($174 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($73 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 10, 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

Sat 11/29

6:15 am-10:55 am

2 stops36h 10m

Adelaide

Tue 12/9

6:05 am-8:25 pm

2 stops30h 50m

$1,719

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 1/9

9:05 pm-10:55 am

2 stops45h 20m

Adelaide

Sat 1/24

6:30 pm-5:02 pm

2 stops39h 02m

$1,820

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 1/9

1:05 pm-4:20 pm

2 stops34h 45m

Adelaide

Sat 1/24

6:00 am-7:30 pm

3 stops30h 00m

$1,881

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 1/9

9:05 pm-9:30 am

2 stops43h 55m

Adelaide

Sat 1/24

2:55 pm-9:32 pm

1 stop23h 07m

$1,915

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 11/29

9:20 pm-1:55 pm

3 stops48h 05m

Adelaide

Tue 12/9

6:00 am-2:41 pm

2 stops25h 11m

$2,053

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 11/15

2:35 pm-7:15 pm

2 stops36h 10m

Adelaide

Sat 11/22

10:35 am-5:32 am

3 stops35h 27m

$2,069

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 11/15

5:16 pm-1:00 pm

2 stops27h 14m

Adelaide

Sat 3/7

2:55 pm-7:55 pm

1 stop21h 30m

$2,120

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 12/5

9:06 pm-10:15 pm

2 stops56h 39m

$667

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 1/1

12:45 pm-9:30 am

1 stop28h 15m

$933

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 1/1

9:34 am-5:45 pm

3 stops39h 41m

$958

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 13 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 November 10, 2025.

When flying from Illinois to Adelaide, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 46% versus a flight in the morning.

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 Air Canada fly from Illinois to Adelaide in about 34h 45m. The time it takes to get you to your destination can typically vary by up to 1h 25m. 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.

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 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 November 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$982Average$1,190FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,303Average$1,590FlexibilityNo cancel feeOn-time78%
Fiji AirwaysCheapest$1,351Average$1,438FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,885Average$2,028FlexibilityNo cancel feeOn-time69%

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