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Cheap flights from Adelaide to Illinois from $1,537

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — ORD
30 Apr — 7 May1
1 adult
1 adult, Economy, 0 bags

Cheap 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 31 March 2026.

Mon 11/518:55
ADL
-
ORD
2 stops39h 50m
Air Canada
Mon 18/515:40
ORD
-
ADL
2 stops29h 00m
Air Canada
Deal found 26/3$1,537
Wed 13/517:15
ADL
-
ORD
2 stops36h 00m
Multiple Airlines
Wed 22/719:45
ORD
-
ADL
2 stops47h 00m
Multiple Airlines
Deal found 29/3$2,392
Thu 14/517:15
ADL
-
ORD
2 stops36h 00m
Multiple Airlines
Thu 21/515:40
ORD
-
ADL
2 stops39h 50m
Multiple Airlines
Deal found 30/3$2,472
Tue 28/720:00
ADL
-
ORD
2 stops33h 11m
Air Canada
Tue 4/815:40
ORD
-
ADL
2 stops29h 00m
Air Canada
Deal found 26/3$2,533
Tue 14/719:35
ADL
-
ORD
2 stops33h 36m
Multiple Airlines
Tue 15/915:40
ORD
-
ADL
2 stops29h 40m
Multiple Airlines
Deal found 29/3$2,630
Wed 13/518:55
ADL
-
ORD
2 stops39h 50m
Air Canada
Wed 22/710:43
ORD
-
ADL
3 stops36h 42m
Air Canada
Deal found 29/3$2,708
Sat 18/706:00
ADL
-
ORD
2 stops26h 36m
Qantas Airways
Sun 26/719:01
ORD
-
ADL
2 stops26h 24m
Qantas Airways
Deal found 30/3$2,863
Thu 14/520:00
ADL
-
ORD
3 stops37h 55m
Air Canada
Thu 21/515:40
ORD
-
ADL
2 stops31h 45m
Air Canada
Deal found 30/3$2,926

Find flight deals from Adelaide to Illinois

Keep the following information in mind while searching for Adelaide to Illinois flight deals. Data was last updated 31 March 2026.

Round-trip from

$1,537

Popular in

June

Cheapest in

March

Average price

$1,553
Air Canada
  • Air Canada
  • 11/5-18/5
  • 4 total stops
  • 68h 50m total
  • Adelaide to Illinois
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($415 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($173 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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 31 March 2026.
Use the filters below to find and compare flights from Adelaide to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Wed 13/5

17:15-14:45

2 stops36h 00m

Chicago O'Hare Intl

Wed 22/7

19:45-09:15

2 stops47h 00m

$2,392

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 14/5

17:15-14:45

2 stops36h 00m

Chicago O'Hare Intl

Thu 21/5

15:40-22:00

2 stops39h 50m

$2,472
Fastest return journey

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 28/7

20:00-14:41

2 stops33h 11m

Chicago O'Hare Intl

Tue 4/8

15:40-11:10

2 stops29h 00m

$2,533

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 14/7

19:35-14:41

2 stops33h 36m

Chicago O'Hare Intl

Tue 15/9

15:40-11:50

2 stops29h 40m

$2,630

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Wed 13/5

18:55-20:15

2 stops39h 50m

Chicago O'Hare Intl

Wed 22/7

10:43-13:55

3 stops36h 42m

$2,708

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 3/9

21:20-14:41

2 stops31h 51m

Chicago O'Hare Intl

Sun 6/9

10:43-13:55

3 stops36h 42m

$2,977

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 28/7

21:40-19:07

2 stops35h 57m

Chicago O'Hare Intl

Tue 4/8

19:20-15:50

1 stop30h 00m

$3,021

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 3/9

21:40-09:10

2 stops50h 00m

Chicago O'Hare Intl

Sun 6/9

19:20-15:50

1 stop30h 00m

$3,273

Flights are sorted by cheapest return flights first.

Deals found on 29/3

Sorted by cheapest first

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

How much does it cost for a return flight from Adelaide to Illinois?

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 31 March 2026.
Get a feel of what it's like to fly with Qantas Airways and Air Canada 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.
Qantas Airways
7.5
Good
1,016 reviews
Check prices

Crew

8.1

Entertainment

7.2

Comfort

7.5

Food

7.0

Overall

7.5

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
Qantas Airways
7.5
Good
1,016 reviews
Qantas Airways
7.5
Good
1,016 reviews
Check prices

Crew

8.1

Entertainment

7.2

Comfort

7.5

Food

7.0

Overall

7.5

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
Air Canada
7.1
Good
10,866 reviews
Qantas Airways
7.5
Good
1,016 reviews
Check prices

Crew

8.1

Entertainment

7.2

Comfort

7.5

Food

7.0

Overall

7.5

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.

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 $2,533, Air Canada can have you in Illinois from Adelaide in 33h 11m. There are 15937 km between Adelaide and Illinois.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Adelaide to Illinois

Discover the top 2 airlines 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 31 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,412Average$1,861FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,451Average$1,725FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Adelaide to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from Adelaide to Illinois by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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.

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

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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