Find flights
When to book
Airlines
FAQs

Cheap flights from Adelaide to Illinois from $1,176

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 28/5. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — ORD
31 Jan — 7 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Adelaide to Illinois

Enter your travel dates to find the best prices.

Best flights from Adelaide to Illinois
Discover carefully curated flight deals from Adelaide to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 January 2026.

Thu 12/206:00ADL - ORD
2 stops25h 11mAir Canada
Mon 16/215:35ORD - ADL
2 stops38h 25mAir Canada
Deal found 29/12$1,537
Fri 13/206:10ADL - ORD
2 stops25h 01mMultiple Airlines
Fri 20/215:35ORD - ADL
2 stops29h 50mMultiple Airlines
Deal found 30/12$1,571
Fri 29/512:40ADL - ORD
2 stops25h 48mAmerican Airlines
Tue 4/819:00ORD - ADL
2 stops25h 35mAmerican Airlines
Deal found 31/12$1,665
Wed 3/610:10ADL - ORD
2 stops23h 48mQantas Airways
Wed 29/717:10ORD - ADL
2 stops28h 15mQantas Airways
Deal found 31/12$1,846
Thu 4/606:05ADL - ORD
2 stops28h 42mUnited Airlines
Sat 1/821:39ORD - ADL
2 stops46h 56mUnited Airlines
Deal found 31/12$1,870
Fri 13/206:00ADL - ORD
3 stops30h 15mAir Canada
Fri 20/220:40ORD - ADL
3 stops48h 45mAir Canada
Deal found 30/12$1,634
Thu 4/615:15ADL - ORD
2 stops37h 33mQantas Airways
Tue 4/817:10ORD - ADL
2 stops28h 55mQantas Airways
Deal found 31/12$1,855
Thu 4/606:05ADL - ORD
2 stops28h 42mUnited Airlines
Fri 31/721:39ORD - ADL
2 stops46h 56mUnited Airlines
Deal found 31/12$1,945

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 1 January 2026.

Round-trip from

$1,483

One-way from

$1,176

Popular in

December

Cheapest in

March

Average price

$1,568
Air Canada
  • Air Canada
  • 21/3-22/4
  • 4 total stops
  • 60h 30m total
  • Adelaide to Illinois
Search Deals
28/5
  • 28/5
  • 3 total stops
  • 55h 36m total
  • Adelaide to Illinois
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($303 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($84 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 1 January 2026.
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 12/2

06:00-14:41

2 stops25h 11m

Chicago O'Hare Intl

Mon 16/2

15:35-22:30

2 stops38h 25m

$1,537

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Fri 13/2

06:10-14:41

2 stops25h 01m

Chicago O'Hare Intl

Fri 20/2

15:35-13:55

2 stops29h 50m

$1,571

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Fri 13/2

06:00-19:45

3 stops30h 15m

Chicago O'Hare Intl

Fri 20/2

20:40-13:55

3 stops48h 45m

$1,634

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Fri 29/5

12:40-23:58

2 stops25h 48m

Chicago O'Hare Intl

Tue 4/8

19:00-11:05

2 stops25h 35m

$1,665

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Wed 3/6

10:10-19:28

2 stops23h 48m

Chicago O'Hare Intl

Wed 29/7

17:10-11:55

2 stops28h 15m

$1,846

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 4/6

15:15-14:18

2 stops37h 33m

Chicago O'Hare Intl

Tue 4/8

17:10-12:35

2 stops28h 55m

$1,855

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 4/6

06:05-20:17

2 stops28h 42m

Chicago O'Hare Intl

Sat 1/8

21:39-11:05

2 stops46h 56m

$1,870

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 4/6

06:05-20:17

2 stops28h 42m

Chicago O'Hare Intl

Fri 31/7

21:39-11:05

2 stops46h 56m

$1,945

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 28/5

13:40-06:46

3 stops55h 36m

$1,176

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Wed 27/5

06:25-06:46

3 stops38h 51m

$1,218

Flights are sorted by cheapest return flights first.

Deals found on 31/12

Showing 1-10 of 17 results
1
2

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
No data available for this route at this time. Please check back soon.

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 1 January 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
960 reviews
Check prices

Food

7.0

Entertainment

7.2

Boarding

7.7

Crew

8.2

Comfort

7.5

Overall

7.5

Reviews

1 / 20
6.0
Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.
Qantas Airways
7.5
Good
960 reviews
Qantas Airways
7.5
Good
960 reviews
Check prices

Food

7.0

Entertainment

7.2

Boarding

7.7

Crew

8.2

Comfort

7.5

Overall

7.5

Reviews

1 / 20
6.0
Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.
Air Canada
7.1
Good
10,571 reviews
Qantas Airways
7.5
Good
960 reviews
Check prices

Food

7.0

Entertainment

7.2

Boarding

7.7

Crew

8.2

Comfort

7.5

Overall

7.5

Reviews

1 / 20
6.0
Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

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 $1,537, Air Canada can have you in Illinois from Adelaide in 25h 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Adelaide to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Adelaide to Los Angeles flights
Adelaide to John F Kennedy Intl flights
Adelaide to Newark flights
Adelaide to San Francisco flights
Adelaide to LaGuardia flights
Adelaide to Hobby flights
Adelaide to Dallas/Fort Worth flights
Adelaide to George Bush Intcntl flights
Adelaide to Honolulu flights
Adelaide to Seattle flights
Adelaide to Philadelphia flights
Adelaide to Tampa flights
Adelaide to Salt Lake City flights
Adelaide to Portland flights
Adelaide to O'Hare Intl flights
Adelaide to Miami flights
Adelaide to Minneapolis flights
Adelaide to Reno flights
Adelaide to Atlanta flights
Adelaide to Las Vegas flights
Adelaide to Fort Lauderdale flights
Adelaide to Boston flights
Adelaide to San Jose flights
Adelaide to Richmond flights
Adelaide to Kahului flights

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 1 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,171Average$1,576FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,489Average$1,781FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.