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$883+ 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
ene. 1 — ene. 81
jue. 1/1
jue. 1/8
1 adult, Economy
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Cheap 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 diciembre 2, 2025.

This American Airlines deal was found by Cheapflights users on 12/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/51:15 pmORD - ADL
2 stops27h 40mAmerican Airlines
mié. 12/107:50 amADL - ORD
2 stops28h 15mAmerican Airlines
Deal found 12/1$1,498
This United Airlines deal was found by Cheapflights users on 11/30. 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.
lun. 12/296:25 pmORD - ADL
1 stop22h 35mUnited Airlines
lun. 1/52:55 pmADL - ORD
2 stops30h 12mUnited Airlines
Deal found 11/30$1,867
This Gotogate deal was found by Cheapflights users on 12/1. 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.
vie. 12/58:30 pmORD - ADL
3 stops53h 10mAir Canada
mié. 12/107:55 pmADL - ORD
2 stops59h 16mAir Canada
Deal found 12/1$1,956
This Ovago deal was found by Cheapflights users on 12/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/52:35 pmORD - ADL
1 stop27h 25mCathay Pacific
mié. 12/1012:00 pmADL - ORD
2 stops41h 25mCathay Pacific
Deal found 12/1$2,036
This Qantas Airways deal was found by Cheapflights users on 12/1. 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.
mar. 12/166:17 pmORD - ADL
2 stops26h 53mMultiple Airlines
mar. 12/307:05 amADL - ORD
2 stops24h 58mMultiple Airlines
Deal found 12/1$2,276
This Expedia deal was found by Cheapflights users on 12/1. 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.
vie. 12/56:17 pmORD - ADL
3 stops32h 03mMultiple Airlines
mié. 12/1011:55 amADL - ORD
3 stops52h 34mMultiple Airlines
Deal found 12/1$2,612
This Priceline deal was found by Cheapflights users on 11/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/292:50 pmORD - ADL
2 stops27h 55mQantas Airways
lun. 1/54:10 pmADL - ORD
2 stops24h 00mQantas Airways
Deal found 11/30$2,909
This Mytrip deal was found by Cheapflights users on 11/30. 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.
lun. 12/297:30 amORD - ADL
3 stops34h 55mMultiple Airlines
lun. 1/58:25 pmADL - ORD
3 stops33h 50mMultiple Airlines
Deal found 11/30$3,286

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 diciembre 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,051
(FlightHub)

One-way from

$883
(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.
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 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 diciembre 2, 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

dom. 3/1

3:35 pm-4:20 pm

2 stops32h 15m

Adelaide

mar. 3/31

10:20 pm-2:43 pm

2 stops31h 53m

$1,051

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

vie. 2/27

3:35 pm-4:20 pm

2 stops32h 15m

Adelaide

mar. 3/3

6:10 am-2:41 pm

2 stops25h 01m

$1,132

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

jue. 2/12

9:14 pm-1:55 pm

3 stops48h 11m

Adelaide

lun. 2/16

7:00 pm-2:41 pm

2 stops36h 11m

$1,230

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

dom. 3/1

8:20 pm-9:30 am

1 stop44h 40m

Adelaide

mar. 3/31

6:10 am-9:38 pm

2 stops30h 58m

$1,423

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

mié. 2/25

3:35 pm-10:30 pm

2 stops38h 25m

Adelaide

dom. 3/1

6:10 am-2:41 pm

2 stops25h 01m

$1,432

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

vie. 12/5

1:15 pm-9:25 am

2 stops27h 40m

Adelaide

mié. 12/10

7:50 am-7:35 pm

2 stops28h 15m

$1,498

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

vie. 1/9

9:05 pm-9:30 am

2 stops43h 55m

Adelaide

sáb. 1/24

2:55 pm-7:50 pm

1 stop21h 25m

$1,654

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

jue. 12/25

10:53 am-9:30 am

1 stop30h 07m

$1,128

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

mar. 12/16

3:11 pm-10:55 am

2 stops27h 14m

$1,564

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

vie. 12/19

9:40 pm-9:30 am

2 stops43h 20m

$1,620

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

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 diciembre 2, 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 and United Airlines 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 12h 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 diciembre 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$982Average$1,158FlexibilityNo 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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