What is the cheapest airline that flies from Illinois to Adelaide?

United Airlines, Qantas Airways, and Air Canada are the most popular carriers operating 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 old do you have to be to fly from Illinois to Adelaide Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents required for your trip to Adelaide Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Adelaide Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$1,082 Cheap Flights from Illinois to Adelaide in 2025/26

1 adult

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Find the cheapest flights from Illinois to Adelaide

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

15:40 - 16:20ORD-ADL

32h 10m2 stops

06:10 - 14:41ADL-ORD

25h 01m2 stops

$1,823Air Canada

Find Deal

Fri, 23 Jan - Sat, 31 Jan

15:40 - 16:20ORD-ADL

32h 10m2 stops

06:00 - 19:30ADL-ORD

30h 00m3 stops

$1,840Air Canada

Find Deal

Fri, 23 Jan - Sat, 31 Jan

21:05 - 09:30ORD-ADL

43h 55m2 stops

14:55 - 19:50ADL-ORD

21h 25m1 stop

$2,013United Airlines

Find Deal

Fri, 23 Jan - Sat, 31 Jan

10:38 - 10:55ORD-ADL

31h 47m2 stops

06:35 - 18:50ADL-ORD

28h 45m2 stops

$2,663Air New Zealand

Find Deal

Mon, 8 Dec - Tue, 16 Dec

13:13 - 13:55ORD-ADL

32h 12m3 stops

06:00 - 09:13ADL-ORD

43h 43m3 stops

$2,675Air Canada

Find Deal

Fri, 23 Jan - Sat, 31 Jan

21:05 - 10:55ORD-ADL

45h 20m2 stops

18:30 - 14:50ADL-ORD

36h 50m2 stops

$2,856Air New Zealand

Find Deal

Fri, 9 Jan - Sat, 24 Jan

21:05 - 10:55ORD-ADL

45h 20m2 stops

14:25 - 14:50ADL-ORD

40h 55m2 stops

$2,857Air New Zealand

Find Deal

Fri, 9 Jan - Sat, 24 Jan

21:05 - 09:30ORD-ADL

43h 55m2 stops

14:55 - 05:44ADL-ORD

31h 19m1 stop

$2,931United Airlines

Find Deal

Fri, 9 Jan - Sat, 24 Jan

14:00 - 13:55ORD-ADL

31h 25m3 stops

06:00 - 14:41ADL-ORD

25h 11m2 stops

$3,000Air Canada

Find Deal

Mon, 8 Dec - Tue, 16 Dec

17:30 - 15:45ORD-ADL

31h 45m2 stops

06:00 - 15:56ADL-ORD

24h 26m2 stops

$3,078Qantas Airways

Find Deal

Sat, 9 May - Tue, 12 May

Air Canada flights from Illinois to Adelaide

Our best Air Canada deals on Illinois to Adelaide flight tickets

Air Canada

23 Jan

ORD15:40Chicago O'Hare Intl

32h 10m

2 stops

ADL16:20Adelaide

31 Jan

ADL06:10Adelaide

25h 01m

2 stops

ORD14:41Chicago O'Hare Intl

$1,823

Find similar

Air Canada

23 Jan

ORD15:40Chicago O'Hare Intl

32h 10m

2 stops

ADL16:20Adelaide

31 Jan

ADL06:00Adelaide

30h 00m

3 stops

ORD19:30Chicago O'Hare Intl

$1,840

Find similar

Air Canada

4 May

ORD19:35Chicago O'Hare Intl

32h 05m

2 stops

ADL18:10Adelaide

30 June

ADL18:50Adelaide

34h 29m

2 stops

ORD14:49Chicago O'Hare Intl

$2,201

Find similar

United Airlines flights from Illinois to Adelaide

Our best United Airlines deals on Illinois to Adelaide flight tickets

United Airlines

23 Jan

ORD21:05Chicago O'Hare Intl

43h 55m

2 stops

ADL09:30Adelaide

31 Jan

ADL14:55Adelaide

21h 25m

1 stop

ORD19:50Chicago O'Hare Intl

$2,013

Find similar

United Airlines

9 Jan

ORD21:05Chicago O'Hare Intl

43h 55m

2 stops

ADL09:30Adelaide

24 Jan

ADL14:55Adelaide

31h 19m

1 stop

ORD05:44Chicago O'Hare Intl

$2,931

Find similar

United Airlines

30 Dec

ORD16:20Chicago O'Hare Intl

29h 20m

2 stops

ADL14:10Adelaide

6 Jan

ADL09:30Adelaide

45h 50m

2 stops

ORD14:50Chicago O'Hare Intl

$3,267

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 23/1

15:40-16:20

2 stops32h 10m

Adelaide

Sat 31/1

06:10-14:41

2 stops25h 01m

$1,823

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 23/1

15:40-16:20

2 stops32h 10m

Adelaide

Sat 31/1

06:00-19:30

3 stops30h 00m

$1,840

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 23/1

21:05-09:30

2 stops43h 55m

Adelaide

Sat 31/1

14:55-19:50

1 stop21h 25m

$2,013

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/12

10:38-10:55

2 stops31h 47m

Adelaide

Tue 16/12

06:35-18:50

2 stops28h 45m

$2,663

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 23/1

13:13-13:55

3 stops32h 12m

Adelaide

Sat 31/1

06:00-09:13

3 stops43h 43m

$2,675

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 9/1

21:05-10:55

2 stops45h 20m

Adelaide

Sat 24/1

18:30-14:50

2 stops36h 50m

$2,856

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 9/1

21:05-10:55

2 stops45h 20m

Adelaide

Sat 24/1

14:25-14:50

2 stops40h 55m

$2,857

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 9/1

21:05-09:30

2 stops43h 55m

Adelaide

Sat 24/1

14:55-05:44

1 stop31h 19m

$2,931

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/12

14:00-13:55

3 stops31h 25m

Adelaide

Tue 16/12

06:00-14:41

2 stops25h 11m

$3,000

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 9/5

17:30-15:45

2 stops31h 45m

Adelaide

Tue 12/5

06:00-15:56

2 stops24h 26m

$3,078

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Adelaide?

The month of February is, on average, the cheapest month to fly to Adelaide from Illinois, with most prices found around $1,565. If you aren’t able to travel during the month of February, then book flights to Adelaide from Illinois during April instead. Flights to Adelaide in April, while not as cheap as those in February, still average around $1,621.

What is the cheapest time of day to depart on your flight to Adelaide?

The cheapest time of day to fly to Adelaide is in the afternoon when flights can be purchased for as low as $2,299. Flights in the evening are often more expensive, with an average ticket price of $2,626.

Cheap Illinois to Adelaide flight deals and tips

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

Direct flights	None

There are no direct flights from Illinois to Adelaide. There are no popular flight routes from Illinois to Adelaide.

Search flight deals

When did momondo last update prices for flights from Illinois to Adelaide Airport?
Prices for flights from Illinois to Adelaide Airport refresh daily.
How old do you have to be to fly from Illinois to Adelaide Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents required for your trip to Adelaide Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Adelaide Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Adelaide. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Illinois to Adelaide flights to just show those with flexible booking policies.

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

Once you have performed a search for Illinois to Adelaide flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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.