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Cheap flights from Adelaide to Illinois from $1,263

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 14/6. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — ORD
5 May — 12 May1
1 adult

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 30 April 2025.

Round-trip from

$2,241

One-way from

$1,263

Popular in

September

Cheapest in

April

Average price

$1,554
American Airlines
  • American Airlines
  • 6/6-24/9
  • 4 total stops
  • 94h 47m total
  • Adelaide to Illinois
Search Deals
American Airlines
  • American Airlines
  • 14/6
  • 2 total stops
  • 27h 38m total
  • Adelaide to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($517 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($101 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Adelaide to Illinois

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 30 April 2025.

Fri 6/611:00ADL - ORD
2 stops58h 08mAmerican Airlines
Wed 24/907:16ORD - ADL
2 stops36h 39mAmerican Airlines
Deal found 29/4$2,241
Sat 14/619:00ADL - ORD
2 stops57h 55mCathay Pacific
Sat 21/616:00ORD - ADL
2 stops33h 05mCathay Pacific
Deal found 30/4$2,258
Sun 8/618:10ADL - ORD
2 stops36h 20mMultiple Airlines
Sat 14/601:30ORD - ADL
2 stops48h 15mMultiple Airlines
Deal found 29/4$2,420
Sun 8/621:40ADL - ORD
1 stop31h 55mQatar Airways
Sun 15/606:15ORD - ADL
2 stops43h 05mQatar Airways
Deal found 29/4$3,034
Fri 6/617:35ADL - ORD
2 stops39h 54mSingapore Airlines
Wed 24/913:35ORD - ADL
3 stops36h 15mSingapore Airlines
Deal found 29/4$3,096
Sun 8/616:30ADL - ORD
3 stops61h 05mAir Canada
Sun 15/615:35ORD - ADL
2 stops36h 05mAir Canada
Deal found 29/4$3,135
Sun 8/621:50ADL - ORD
1 stop32h 25mEmirates
Sun 15/620:35ORD - ADL
1 stop33h 00mEmirates
Deal found 29/4$3,490

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 30 April 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

Fri 6/6

11:00-06:38

2 stops58h 08m

Chicago O'Hare Intl

Wed 24/9

07:16-10:25

2 stops36h 39m

$2,241

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 14/6

19:00-14:25

2 stops57h 55m

Chicago O'Hare Intl

Sat 21/6

16:00-15:35

2 stops33h 05m

$2,258

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 8/6

18:10-16:00

2 stops36h 20m

Chicago O'Hare Intl

Sat 14/6

01:30-16:15

2 stops48h 15m

$2,420

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 8/6

21:40-15:05

1 stop31h 55m

Chicago O'Hare Intl

Sun 15/6

06:15-15:50

2 stops43h 05m

$3,034

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Fri 6/6

17:35-18:59

2 stops39h 54m

Chicago O'Hare Intl

Wed 24/9

13:35-16:20

3 stops36h 15m

$3,096

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 8/6

16:30-15:05

3 stops61h 05m

Chicago O'Hare Intl

Sun 15/6

15:35-18:10

2 stops36h 05m

$3,135

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 8/6

21:50-15:45

1 stop32h 25m

Chicago O'Hare Intl

Sun 15/6

20:35-20:05

1 stop33h 00m

$3,490

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 14/6

08:00-21:08

2 stops27h 38m

$1,263

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Fri 13/6

10:05-14:25

2 stops42h 50m

$1,741

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Fri 13/6

12:15-23:35

3 stops25h 50m

$2,106

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 12 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

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 30 April 2025.

When flying from Adelaide to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 30 April 2025.
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very Good
1,292 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Emirates
8.0
Very Good
3,215 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Cathay Pacific
7.5
Good
852 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Qatar Airways
7.4
Good
3,563 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
American Airlines
7.2
Good
10,000 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Entertainment

8.0

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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.

  • 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 American Airlines ($1,263), Cathay Pacific ($1,741), and Qatar Airways ($2,287).

  • 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,222Average$1,649FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

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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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