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Cheap flights from Illinois to Adelaide from $782

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Adelaide departing on 9/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Illinois to Adelaide

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air New Zealand Logo
7:00 am - 10:55 amORD  Chicago O'Hare Intl-ADL Adelaide
35h 25m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
12:05 pm - 9:46 pmADL  Adelaide-ORD Chicago O'Hare Intl
26h 11m2 stops Auckland Intl Los Angeles Los Angeles
$1,287Air New Zealand
Wed, Nov 25 - Sun, Dec 6
Air New Zealand Logo
2:00 pm - 10:55 amORD  Chicago O'Hare Intl-ADL Adelaide
28h 25m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
12:05 pm - 11:02 pmADL  Adelaide-ORD Chicago O'Hare Intl
27h 27m2 stops Auckland Intl Los Angeles Los Angeles
$1,287Air New Zealand
Wed, Nov 25 - Sun, Dec 6
Air New Zealand Logo
7:00 am - 10:55 amORD  Chicago O'Hare Intl-ADL Adelaide
35h 25m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
12:05 pm - 11:02 pmADL  Adelaide-ORD Chicago O'Hare Intl
27h 27m2 stops Auckland Intl Los Angeles Los Angeles
$1,325Air New Zealand
Wed, Nov 25 - Sun, Dec 6
Air Canada Logo
3:40 pm - 6:25 pmORD  Chicago O'Hare Intl-ADL Adelaide
35h 15m2 stops Vancouver Intl Sydney Kingsford Smith
Air Canada Logo
6:10 am - 2:37 pmADL  Adelaide-ORD Chicago O'Hare Intl
23h 57m2 stops Brisbane Vancouver Intl
$1,369Air Canada
Tue, Oct 20 - Wed, Oct 28
United Airlines Logo
6:25 pm - 2:10 pmORD  Chicago O'Hare Intl-ADL Adelaide
27h 15m2 stops Los Angeles Los Angeles Melbourne
United Airlines Logo
8:40 am - 9:18 pmADL  Adelaide-ORD Chicago O'Hare Intl
29h 08m2 stops Melbourne San Francisco
$1,798United Airlines
Thu, Dec 24 - Thu, Dec 31
United Airlines Logo
9:49 pm - 9:30 amORD  Chicago O'Hare Intl-ADL Adelaide
43h 11m1 stop San Francisco
United Airlines Logo
7:15 am - 5:04 pmADL  Adelaide-ORD Chicago O'Hare Intl
26h 19m2 stops Melbourne Los Angeles Los Angeles
$1,912United Airlines
Wed, Dec 23 - Thu, Dec 31
United Airlines Logo
6:25 pm - 2:10 pmORD  Chicago O'Hare Intl-ADL Adelaide
27h 15m2 stops Los Angeles Los Angeles Melbourne
United Airlines Logo
7:15 am - 11:52 pmADL  Adelaide-ORD Chicago O'Hare Intl
33h 07m2 stops Melbourne Los Angeles Los Angeles
$1,988United Airlines
Thu, Dec 24 - Fri, Jan 1
Qantas Airways Logo
6:45 pm - 1:45 pmORD  Chicago O'Hare Intl-ADL Adelaide
26h 30m2 stops Los Angeles Los Angeles Sydney Kingsford Smith
Qantas Airways Logo
6:00 am - 11:05 pmADL  Adelaide-ORD Chicago O'Hare Intl
33h 35m2 stops Sydney Kingsford Smith Los Angeles Los Angeles
$2,607Qantas Airways
Mon, Dec 21 - Wed, Dec 30
Qantas Airways Logo
6:45 pm - 1:45 pmORD  Chicago O'Hare Intl-ADL Adelaide
26h 30m2 stops Los Angeles Los Angeles Sydney Kingsford Smith
Qantas Airways Logo
6:00 am - 2:15 pmADL  Adelaide-ORD Chicago O'Hare Intl
24h 45m2 stops Sydney Kingsford Smith Los Angeles Los Angeles
$2,643Qantas Airways
Tue, Dec 22 - Wed, Dec 30
Qantas Airways Logo
6:45 pm - 1:45 pmORD  Chicago O'Hare Intl-ADL Adelaide
26h 30m2 stops Los Angeles Los Angeles Sydney Kingsford Smith
Qantas Airways Logo
6:00 am - 4:05 pmADL  Adelaide-ORD Chicago O'Hare Intl
26h 35m2 stops Sydney Kingsford Smith Los Angeles Los Angeles
$3,292Qantas Airways
Tue, Dec 22 - Fri, Jan 1

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Air Canada flights from Illinois to Adelaide

Our best Air Canada deals on Illinois to Adelaide flight tickets
Air Canada
Oct 20
ORD3:40 pmChicago O'Hare Intl
35h 15m
2 stops
ADL6:25 pmAdelaide
Oct 28
ADL6:10 amAdelaide
23h 57m
2 stops
ORD2:37 pmChicago O'Hare Intl
$1,369
Air Canada
Sep 22
ORD3:40 pmChicago O'Hare Intl
29h 40m
2 stops
ADL11:50 amAdelaide
Sep 29
ADL8:00 pmAdelaide
38h 36m
2 stops
ORD8:06 pmChicago O'Hare Intl
$1,374
Air Canada
Oct 20
ORD9:50 amChicago O'Hare Intl
36h 35m
3 stops
ADL1:55 pmAdelaide
Oct 28
ADL6:10 amAdelaide
23h 57m
2 stops
ORD2:37 pmChicago O'Hare Intl
$1,377

Qatar Airways flights from Illinois to Adelaide

Our best Qatar Airways deals on Illinois to Adelaide flight tickets
Qatar Airways
Oct 20
ORD7:20 pmChicago O'Hare Intl
47h 15m
2 stops
ADL10:05 amAdelaide
Oct 28
ADL10:00 pmAdelaide
33h 00m
1 stop
ORD3:30 pmChicago O'Hare Intl
$1,410
Qatar Airways
Sep 7
ORD7:20 pmChicago O'Hare Intl
29h 10m
1 stop
ADL3:00 pmAdelaide
Sep 14
ADL5:50 pmAdelaide
35h 45m
2 stops
ORD3:05 pmChicago O'Hare Intl
$1,414
Qatar Airways
Sep 7
ORD7:20 pmChicago O'Hare Intl
36h 15m
2 stops
ADL10:05 pmAdelaide
Sep 14
ADL6:20 pmAdelaide
35h 15m
2 stops
ORD3:05 pmChicago O'Hare Intl
$1,537

momondo 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, momondo users made 832,500 searches. Data last updated August 11, 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 round-trip

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Wed 11/25

7:00 am-10:55 am

2 stops35h 25m

Adelaide

Sun 12/6

12:05 pm-9:46 pm

2 stops26h 11m

$1,287

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Wed 11/25

2:00 pm-10:55 am

2 stops28h 25m

Adelaide

Sun 12/6

12:05 pm-11:02 pm

2 stops27h 27m

$1,287

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Wed 11/25

7:00 am-10:55 am

2 stops35h 25m

Adelaide

Sun 12/6

12:05 pm-11:02 pm

2 stops27h 27m

$1,325

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Tue 10/20

3:40 pm-6:25 pm

2 stops35h 15m

Adelaide

Wed 10/28

6:10 am-2:37 pm

2 stops23h 57m

$1,369

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Thu 12/24

6:25 pm-2:10 pm

2 stops27h 15m

Adelaide

Thu 12/31

8:40 am-9:18 pm

2 stops29h 08m

$1,798

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Wed 12/23

9:49 pm-9:30 am

1 stop43h 11m

Adelaide

Thu 12/31

7:15 am-5:04 pm

2 stops26h 19m

$1,912

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Thu 12/24

6:25 pm-2:10 pm

2 stops27h 15m

Adelaide

Fri 1/1

7:15 am-11:52 pm

2 stops33h 07m

$1,988

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Mon 12/21

6:45 pm-1:45 pm

2 stops26h 30m

Adelaide

Wed 12/30

6:00 am-11:05 pm

2 stops33h 35m

$2,607
Quickest round-trip

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Tue 12/22

6:45 pm-1:45 pm

2 stops26h 30m

Adelaide

Wed 12/30

6:00 am-2:15 pm

2 stops24h 45m

$2,643

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Tue 12/22

6:45 pm-1:45 pm

2 stops26h 30m

Adelaide

Fri 1/1

6:00 am-4:05 pm

2 stops26h 35m

$3,292

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Adelaide from

How to get the cheapest flight ticket from Illinois to Adelaide

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Adelaide?

The cheapest month to fly to Adelaide from Illinois is in September. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Adelaide from Illinois during April instead. Flights to Adelaide in April, while not as cheap as those in September, still average around $0.

Cheap Illinois to Adelaide flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Adelaide

Fastest flight time

26h 40m

Direct flights

None
The fastest flight from Illinois to Adelaide takes 26h 40m
There are no direct flights from Illinois to Adelaide. There are no popular flight routes from Illinois to Adelaide.
Search flight deals

Frequently asked questions about flying from Illinois to Adelaide

  • When did momondo last update prices for flights from Illinois to Adelaide Airport?

    Prices for flights from Illinois to Adelaide Airport refresh daily.

  • How many operators does momondo search for flights from Illinois to Adelaide Airport?

  • How old do you have to be to fly from Illinois to Adelaide Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Adelaide Airport.

  • What documentation or ID do you need to fly to Adelaide Airport?

    The required travel and health documents for your Adelaide Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Adelaide Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Adelaide

Compare and see reviews for airlines that fly from Illinois to Adelaide with momondo
Airline
Rating
Free Cancellation
Price
Qantas AirwaysPriceFrom $941Free CancellationRating
7.5
1,081 reviews
Search Qantas Airways flights
Fiji AirwaysPriceFrom $1,351Free CancellationRating
8.0
252 reviews
Search Fiji Airways flights
United AirlinesPriceFrom $1,673Free CancellationRating
7.4
10,104 reviews
Search United Airlines flights

Traveling to a place near Adelaide?

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

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Adelaide?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Adelaide. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Illinois to Adelaide with flexible booking policies on momondo?

momondo does allow users to show only those flights to Adelaide from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to Adelaide?

Once all potential Illinois to Adelaide flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Adelaide right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Adelaide from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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