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$996+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
Jan 28 — Feb 41
Wed 1/28
Wed 2/4
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 29, 2025.

This Air Canada deal was found by Cheapflights users on 12/26. 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.
Mon 2/161:05 pmORD - ADL
2 stops34h 45mAir Canada
Thu 2/197:55 pmADL - ORD
2 stops35h 16mAir Canada
Deal found 12/26$1,141
This United Airlines deal was found by Cheapflights users on 12/28. 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.
Thu 2/512:45 pmORD - ADL
1 stop28h 15mUnited Airlines
Wed 3/42:55 pmADL - ORD
1 stop30h 47mUnited Airlines
Deal found 12/28$1,214
This oojo deal was found by Cheapflights users on 12/28. 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.
Fri 1/236:40 pmORD - ADL
2 stops31h 40mQantas Airways
Wed 2/44:10 pmADL - ORD
2 stops24h 19mQantas Airways
Deal found 12/28$1,715
This Kiwi.com deal was found by Cheapflights users on 12/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/231:30 pmORD - ADL
2 stops49h 25mMultiple Airlines
Wed 2/412:00 pmADL - ORD
1 stop41h 25mMultiple Airlines
Deal found 12/28$1,770
This oojo deal was found by Cheapflights users on 12/26. 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.
Fri 1/92:40 pmORD - ADL
2 stops27h 45mAir New Zealand
Sat 1/246:30 pmADL - ORD
2 stops36h 50mAir New Zealand
Deal found 12/26$2,085
This United Airlines deal was found by Cheapflights users on 12/28. 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.
Wed 2/116:29 pmORD - ADL
2 stops47h 56mUnited Airlines
Wed 2/182:55 pmADL - ORD
1 stop25h 01mUnited Airlines
Deal found 12/28$1,431

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 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,038
(Air Canada)

One-way from

$996
(Kiwi.com)

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.
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From Illinois to Adelaide
Search Deals
One-way flight 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 29, 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

Mon 2/16

1:05 pm-4:20 pm

2 stops34h 45m

Adelaide

Thu 2/19

7:55 pm-2:41 pm

2 stops35h 16m

$1,141

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 2/5

12:45 pm-9:30 am

1 stop28h 15m

Adelaide

Wed 3/4

2:55 pm-5:12 am

1 stop30h 47m

$1,214

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 2/11

6:29 pm-10:55 am

2 stops47h 56m

Adelaide

Wed 2/18

2:55 pm-11:26 pm

1 stop25h 01m

$1,431

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 1/23

6:40 pm-6:50 pm

2 stops31h 40m

Adelaide

Wed 2/4

4:10 pm-11:59 pm

2 stops24h 19m

$1,715

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 1/23

1:30 pm-7:25 am

2 stops49h 25m

Adelaide

Wed 2/4

12:00 pm-12:55 pm

1 stop41h 25m

$1,770

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 1/9

2:40 pm-10:55 am

2 stops27h 45m

Adelaide

Sat 1/24

6:30 pm-2:50 pm

2 stops36h 50m

$2,085

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 1/15

11:30 pm-11:25 am

3 stops43h 25m

$996

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 1/15

4:16 pm-9:30 am

1 stop24h 44m

$1,128

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

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
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 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 and United Airlines fly from Illinois to Adelaide in about 28h 15m. The time it takes to get you to your destination can typically vary by up to 6h 30m. 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?

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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 29, 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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