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$1,219+ Cheap flights from Adelaide (ADL) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — ORD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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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 April 17, 2025.

Round-trip from

$1,534
(Singapore Airlines)

Popular in

September

Cheapest in

April

Average price

$995
From Adelaide to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($212 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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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 April 17, 2025.

This Qantas Airways deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amADL - ORD
2 stops24h 45mQantas Airways
Sat 1/174:45 pmORD - ADL
2 stops26h 15mQantas Airways
Deal found 4/16$1,219
This Singapore Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/65:35 pmADL - ORD
2 stops37h 57mSingapore Airlines
Wed 9/248:59 pmORD - ADL
2 stops43h 56mSingapore Airlines
Deal found 4/17$1,534
This Gotogate deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/17:00 pmADL - ORD
2 stops57h 55mCathay Pacific
Sun 6/84:00 pmORD - ADL
2 stops57h 05mCathay Pacific
Deal found 4/17$1,651
This Mytrip deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/16:25 amADL - ORD
3 stops38h 47mMultiple Airlines
Sun 6/83:35 pmORD - ADL
2 stops29h 45mMultiple Airlines
Deal found 4/17$1,840
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/172:55 pmADL - ORD
1 stop22h 28mUnited Airlines
Sat 1/172:35 pmORD - ADL
1 stop26h 25mUnited Airlines
Deal found 4/16$1,954
This TravelUp deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/19:40 pmADL - ORD
2 stops38h 44mQatar Airways
Sun 6/87:20 pmORD - ADL
1 stop30h 00mQatar Airways
Deal found 4/17$2,044
This Fiji Airways deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/201:15 pmADL - ORD
2 stops24h 34mFiji Airways
Sat 1/175:40 pmORD - ADL
2 stops26h 05mFiji Airways
Deal found 4/16$2,277
This Virgin Australia deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Australia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:15 amADL - ORD
2 stops39h 23mVirgin Australia
Sat 1/172:35 pmORD - ADL
2 stops30h 50mVirgin Australia
Deal found 4/16$2,294
This Booking.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/18:00 pmADL - ORD
3 stops38h 00mAir Canada
Sun 6/81:01 pmORD - ADL
3 stops32h 19mAir Canada
Deal found 4/16$2,375
This Emirates deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:40 pmADL - ORD
1 stop32h 45mEmirates
Thu 1/157:45 pmORD - ADL
1 stop32h 35mEmirates
Deal found 4/16$2,986

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated April 17, 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

5:35 pm-5:02 pm

2 stops37h 57m

Chicago O'Hare Intl

Wed 9/24

8:59 pm-7:25 am

2 stops43h 56m

$1,534

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 6/1

11:00 am-11:59 pm

2 stops27h 29m

Chicago O'Hare Intl

Sun 6/8

8:36 pm-12:05 pm

2 stops48h 59m

$1,578

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 6/1

7:00 pm-2:25 pm

2 stops57h 55m

Chicago O'Hare Intl

Sun 6/8

4:00 pm-3:35 pm

2 stops57h 05m

$1,651

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 6/1

6:25 am-6:42 am

3 stops38h 47m

Chicago O'Hare Intl

Sun 6/8

3:35 pm-11:50 am

2 stops29h 45m

$1,840

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 6/1

9:40 pm-9:54 pm

2 stops38h 44m

Chicago O'Hare Intl

Sun 6/8

7:20 pm-3:50 pm

1 stop30h 00m

$2,044

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sun 6/1

8:00 pm-7:30 pm

3 stops38h 00m

Chicago O'Hare Intl

Sun 6/8

1:01 pm-11:50 am

3 stops32h 19m

$2,375

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 6/28

9:50 pm-3:45 pm

1 stop32h 25m

Chicago O'Hare Intl

Thu 7/17

8:35 pm-8:05 pm

1 stop33h 00m

$3,042

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

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 round-trip 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 April 17, 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 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 April 17, 2025.
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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
1,288 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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
3,200 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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.
Qantas Airways
7.5
Good
819 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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
849 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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
3,554 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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?

    Located just 4.1 mi from the city center, Adelaide (ADL) is the airport most travelers will use when flying to Illinois from Adelaide.

  • 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 vacation 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.

  • What is the cheapest month to book a flight from Adelaide to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Adelaide to Illinois (average of $245). Flying from Adelaide to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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