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Cheap flights from Adelaide to Illinois from $974

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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — ORD
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Adelaide to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Adelaide to Illinois
Explore the most affordable flight options available from Adelaide to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Wed 5/1111:55ADL - ORD
2 stops24h 05mAir New Zealand
Mon 8/1213:00ORD - ADL
2 stops29h 25mAir New Zealand
Deal found 25/10$1,495
Wed 5/1119:00ADL - ORD
2 stops34h 25mCathay Pacific
Mon 8/1214:35ORD - ADL
1 stop27h 25mCathay Pacific
Deal found 27/10$2,162
Wed 5/1106:00ADL - ORD
3 stops32h 35mAir Canada
Mon 8/1215:40ORD - ADL
2 stops29h 45mAir Canada
Deal found 25/10$2,173
Sat 15/1109:15ADL - ORD
2 stops45h 56mMultiple Airlines
Mon 15/1215:40ORD - ADL
2 stops38h 00mMultiple Airlines
Deal found 27/10$2,420
Sat 15/1106:25ADL - ORD
2 stops47h 00mCathay Pacific
Mon 15/1214:35ORD - ADL
1 stop27h 25mCathay Pacific
Deal found 27/10$2,555

Cheap flight deals from Adelaide to Illinois

Keep the following information in mind while searching for Adelaide to Illinois flight deals. Data was last updated 28 October 2025.

Round-trip from

$1,530

One-way from

$1,139

Popular in

December

Cheapest in

April

Average price

$2,164
Air Canada
  • Air Canada
  • 5/3-9/3
  • 4 total stops
  • 63h 23m total
  • Adelaide to Illinois
Search Deals
15/11
  • 15/11
  • 3 total stops
  • 26h 44m total
  • Adelaide to Illinois
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($269 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($81 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Adelaide to Illinois 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 28 October 2025.
Use the filters below to find and compare flights from Adelaide to Illinois that are best for you.

Fly from

Adelaide

Fly to

Illinois

Route

Depart

Return

Price

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 5/3

06:10-19:53

2 stops30h 13m

Chicago O'Hare Intl

Mon 9/3

15:40-16:20

2 stops33h 10m

$1,530

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 5/3

09:00-12:55

2 stops44h 25m

Chicago O'Hare Intl

Mon 9/3

15:35-10:30

1 stop27h 25m

$2,243

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 1/3

12:00-12:55

1 stop41h 25m

Chicago O'Hare Intl

Tue 31/3

16:00-16:20

2 stops32h 50m

$2,359

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 15/11

09:15-14:41

2 stops45h 56m

Chicago O'Hare Intl

Mon 15/12

15:40-22:10

2 stops38h 00m

$2,420

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 15/2

11:55-05:01

2 stops33h 36m

$974

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 15/11

13:15-07:28

2 stops34h 43m

$1,142

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 15/2

06:15-05:04

3 stops39h 19m

$1,219

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 15/2

12:00-12:55

1 stop41h 25m

$1,353

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 15/11

22:00-14:30

1 stop33h 00m

$2,138

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Best time to book a flight from Adelaide to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Adelaide 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 Adelaide to Illinois

What is the cheapest time of day to fly from ADL to IL?

Find hourly flight availability from Adelaide to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 October 2025.

It’s typically best to fly out from Adelaide to Illinois in the afternoon. Doing so could potentially save you 21% on the flight price compared to flying in the evening, which is usually more expensive.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 28 October 2025.
Get a feel of what it's like to fly with Virgin Australia and Qantas Airways from Adelaide to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Australia
7.6
Good
421 reviews
Check prices

Food

6.4

Comfort

7.5

Entertainment

6.4

Overall

7.6

Boarding

7.7

Crew

8.2

Reviews

1 / 20
6.0
Good

Andrew,June 2025

MEL - CNS

We didn’t eat or drink, but feel like a sardine. No room at all.
Virgin Australia
7.6
Good
421 reviews
Virgin Australia
7.6
Good
421 reviews
Check prices

Food

6.4

Comfort

7.5

Entertainment

6.4

Overall

7.6

Boarding

7.7

Crew

8.2

Reviews

1 / 20
6.0
Good

Andrew,June 2025

MEL - CNS

We didn’t eat or drink, but feel like a sardine. No room at all.
Qantas Airways
7.5
Good
924 reviews
Virgin Australia
7.6
Good
421 reviews
Check prices

Food

6.4

Comfort

7.5

Entertainment

6.4

Overall

7.6

Boarding

7.7

Crew

8.2

Reviews

1 / 20
6.0
Good

Andrew,June 2025

MEL - CNS

We didn’t eat or drink, but feel like a sardine. No room at all.

Related info for your journey

Find useful and relevant information for your journey from Adelaide to Illinois. 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 from for flights from Adelaide to Illinois?

    If you book a flight to Illinois from Adelaide, you will be flying from Adelaide, which is the city’s only airport. Adelaide (ADL) is located 6.6 km from the centre of Adelaide.

  • How long is the flight from Adelaide to Illinois?

    For as low as $1,530, Air Canada can have you in Illinois from Adelaide in 30h 13m. There are 15937 km between Adelaide and Illinois.

  • What are the cheapest airlines to fly from Adelaide to Illinois one-way?

    The cheapet airlines for a one-way flight from Adelaide to Illinois are Air New Zealand ($974), Cathay Pacific ($1,353), and Qatar Airways ($2,138).

  • Can I find deals for flights from Adelaide to Illinois that include hotel bookings?

    Yes. In addition to deals on Adelaide to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Adelaide to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Adelaide to Illinois.

  • Can I find deals for business class flights from Adelaide to Illinois?

    Yes. Cheapflights offers flight deals from Adelaide to Illinois 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

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Alternative routes for Adelaide to Illinois

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Top airline flying from Adelaide to Illinois

Discover the top airline that operate flights from Adelaide to Illinois. 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 647,157 searches. Data last updated 28 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,195Average$1,608FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

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How does Cheapflights help users find flights from Adelaide to Illinois?

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

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

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

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Not ready to book yet? You can track prices for flights from Adelaide to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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