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$1,073+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
Jan 23 — Jan 301
Fri 1/23
Fri 1/30
1 adult, Economy
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Cheap flight deals from Illinois to Adelaide

Best flights from Illinois to Adelaide
Discover carefully curated flight deals from Illinois to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 24, 2025.

This Air Canada deal was found by Cheapflights users on 12/24. 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 2/73:35 pmORD - ADL
2 stops30h 00mMultiple Airlines
Sat 2/146:00 amADL - ORD
2 stops25h 11mMultiple Airlines
Deal found 12/24$1,073
This Air Canada deal was found by Cheapflights users on 12/21. 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.
Thu 2/53:35 pmORD - ADL
2 stops32h 15mAir Canada
Thu 2/126:00 amADL - ORD
3 stops30h 15mAir Canada
Deal found 12/21$1,087
This United Airlines deal was found by Cheapflights users on 12/22. 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.
Mon 1/193:59 pmORD - ADL
2 stops25h 01mUnited Airlines
Mon 2/22:55 pmADL - ORD
2 stops26h 03mUnited Airlines
Deal found 12/22$1,152
This Air Canada deal was found by Cheapflights users on 12/24. 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 2/72:00 pmORD - ADL
3 stops31h 25mAir Canada
Sat 2/146:00 amADL - ORD
3 stops42h 30mAir Canada
Deal found 12/24$1,092
This United Airlines deal was found by Cheapflights users on 12/23. 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.
Mon 2/22:40 pmORD - ADL
2 stops26h 20mUnited Airlines
Sat 2/282:55 pmADL - ORD
1 stop21h 22mUnited Airlines
Deal found 12/23$1,213
This Air Canada deal was found by Cheapflights users on 12/21. 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 2/73:35 pmORD - ADL
2 stops38h 25mAir Canada
Wed 2/116:10 amADL - ORD
2 stops25h 01mAir Canada
Deal found 12/21$1,135
This Air Canada deal was found by Cheapflights users on 12/23. 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.
Fri 2/63:35 pmORD - ADL
2 stops32h 15mAir Canada
Fri 2/137:55 pmADL - ORD
2 stops35h 16mAir Canada
Deal found 12/23$1,143

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 December 24, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$990
(Air Canada)

Popular in

December

Cheapest in

February

Average price

$2,298
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
Highest demand for flights based on searches. 7% potential increase in price ($129 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($76 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 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 December 24, 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 2/7

3:35 pm-2:05 pm

2 stops30h 00m

Adelaide

Sat 2/14

6:00 am-2:41 pm

2 stops25h 11m

$1,073

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 2/5

3:35 pm-4:20 pm

2 stops32h 15m

Adelaide

Thu 2/12

6:00 am-7:45 pm

3 stops30h 15m

$1,087

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 2/7

2:00 pm-1:55 pm

3 stops31h 25m

Adelaide

Sat 2/14

6:00 am-8:00 am

3 stops42h 30m

$1,092

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 2/7

3:35 pm-10:30 pm

2 stops38h 25m

Adelaide

Wed 2/11

6:10 am-2:41 pm

2 stops25h 01m

$1,135

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 2/6

3:35 pm-4:20 pm

2 stops32h 15m

Adelaide

Fri 2/13

7:55 pm-2:41 pm

2 stops35h 16m

$1,143

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 1/19

3:59 pm-9:30 am

2 stops25h 01m

Adelaide

Mon 2/2

2:55 pm-12:28 am

2 stops26h 03m

$1,152

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 2/2

2:40 pm-9:30 am

2 stops26h 20m

Adelaide

Sat 2/28

2:55 pm-7:47 pm

1 stop21h 22m

$1,213

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

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 December 24, 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 Canada fly from Illinois to Adelaide in about 32h 15m. 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

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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 December 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$982Average$1,097FlexibilityNo 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%

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