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Cheap flights from Illinois to Adelaide from $2,091

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
25 Jul — 1 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Adelaide

Enter your travel dates to find the best prices.

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 25 June 2026.

Mon 19/1015:40
ORD
-
ADL
2 stops36h 15m
Air Canada
Tue 10/1106:10
ADL
-
ORD
2 stops30h 21m
Air Canada
Deal found 24/6$2,091
Tue 4/815:40
ORD
-
ADL
2 stops31h 45m
Air Canada
Tue 18/818:55
ADL
-
ORD
2 stops34h 11m
Air Canada
Deal found 21/6$2,101
Fri 16/1019:45
ORD
-
ADL
2 stops26h 15m
Multiple Airlines
Sun 25/1006:10
ADL
-
ORD
2 stops24h 01m
Multiple Airlines
Deal found 21/6$2,137
Sat 8/815:40
ORD
-
ADL
2 stops29h 00m
Multiple Airlines
Sat 15/817:15
ADL
-
ORD
2 stops35h 51m
Multiple Airlines
Deal found 24/6$2,151
Mon 10/819:40
ORD
-
ADL
2 stops32h 00m
Air Canada
Wed 19/820:00
ADL
-
ORD
2 stops33h 06m
Air Canada
Deal found 24/6$2,153
Wed 11/1115:30
ORD
-
ADL
2 stops34h 10m
Air Canada
Sun 15/1106:10
ADL
-
ORD
2 stops24h 57m
Air Canada
Deal found 24/6$2,362

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 25 June 2026.

Round-trip from

$2,093
Air Canada
  • Air Canada
  • 24/11-1/12
  • 4 total stops
  • 60h 58m total
  • Illinois to Adelaide
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Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 25 June 2026.
Use the filters below to find and compare flights from Illinois to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 19/10

09:50-13:55

3 stops36h 35m

Adelaide

Tue 10/11

06:10-20:01

2 stops30h 21m

$2,103
Fastest return journey

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 16/10

19:45-13:30

2 stops26h 15m

Adelaide

Sun 25/10

06:10-14:41

2 stops24h 01m

$2,137

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 8/8

15:40-11:10

2 stops29h 00m

Adelaide

Sat 15/8

17:15-14:36

2 stops35h 51m

$2,151

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 10/8

19:40-18:10

2 stops32h 00m

Adelaide

Wed 19/8

20:00-14:36

2 stops33h 06m

$2,153

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 11/11

12:50-18:10

3 stops36h 50m

Adelaide

Sun 15/11

06:00-19:43

3 stops30h 13m

$2,393

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 16/8

22:00-11:05

2 stops46h 35m

Adelaide

Tue 1/9

06:05-06:56

2 stops39h 21m

$2,572

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 16/10

19:20-16:00

1 stop29h 10m

Adelaide

Sun 25/10

17:05-15:30

2 stops37h 55m

$2,627

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 9/8

19:00-11:55

2 stops26h 25m

Adelaide

Sat 22/8

19:45-16:51

2 stops35h 36m

$2,714

Flights are sorted by cheapest return flights first.

Deals found on 24/6

Sorted by cheapest first

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 return 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?

    Adelaide (ADL) is the airport you will fly into if you book a flight from Illinois to Adelaide. It is only a 6.6 km journey from Adelaide (ADL) to Adelaide’s city centre.

  • How long is the flight from Illinois to Adelaide?

    A quick flight from Illinois to Adelaide can take about 34h. Air Canada provides one of the quickest options available for as low as $2,093. Illinois and Adelaide are separated by a distance of 15937 km.

  • 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 holiday 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

Travelling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

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Why should you use Cheapflights to find cheap flight tickets from Illinois to Adelaide?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Adelaide from Illinois.

Can Cheapflights find flights from Illinois to Adelaide with no change fees?

Need flexible booking options for your flight to Adelaide from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Illinois to Adelaide become cheaper?

Yes! Start tracking prices for Illinois to Adelaide flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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