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Cheap flights from Illinois to Adelaide from $964

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Illinois to Adelaide

Keep the following information in mind while searching for Illinois to Adelaide flight deals. Data was last updated 13 June 2025.

Round-trip from

$2,092

One-way from

$964

Popular in

November

Cheapest in

February

Average price

$2,392
Air New Zealand
  • Air New Zealand
  • 17/10-10/11
  • 4 total stops
  • 73h 04m total
  • Illinois to Adelaide
Search Deals
3/11
  • 3/11
  • 3 total stops
  • 42h 25m total
  • Illinois to Adelaide
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($1,288 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($247 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Illinois to Adelaide

Cheapest flights from Illinois to Adelaide
Explore the most affordable flight options available from Illinois to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Fri 17/1018:26ORD - ADL
2 stops48h 59mAir New Zealand
Mon 10/1111:55ADL - ORD
2 stops24h 05mAir New Zealand
Deal found 10/6$2,092
Sun 27/706:40ORD - ADL
2 stops38h 55mMultiple Airlines
Sun 3/809:15ADL - ORD
2 stops46h 12mMultiple Airlines
Deal found 12/6$2,491
Wed 19/1115:40ORD - ADL
2 stops36h 50mAir Canada
Sat 29/1106:00ADL - ORD
2 stops25h 09mAir Canada
Deal found 12/6$2,493
Tue 24/616:56ORD - ADL
2 stops28h 09mQantas Airways
Wed 16/710:05ADL - ORD
2 stops25h 25mQantas Airways
Deal found 12/6$2,908
Wed 19/1114:40ORD - ADL
1 stop27h 20mCathay Pacific
Sat 29/1119:15ADL - ORD
2 stops58h 15mCathay Pacific
Deal found 12/6$3,130
Sat 19/719:03ORD - ADL
2 stops26h 02mFiji Airways
Sat 26/712:35ADL - ORD
2 stops22h 55mFiji Airways
Deal found 11/6$3,316
Fri 17/1019:20ORD - ADL
1 stop30h 00mQatar Airways
Wed 12/1122:00ADL - ORD
1 stop33h 00mQatar Airways
Deal found 11/6$3,870
Tue 24/620:35ORD - ADL
1 stop33h 00mEmirates
Wed 16/721:50ADL - ORD
1 stop32h 25mEmirates
Deal found 11/6$4,658

Cheapflights Fare Finder

Customise your flight search to find flights from Illinois to Adelaide 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 13 June 2025.
Use the filters below to find and compare flights from Illinois to Adelaide that are best for you.

Fly from

Illinois

Fly to

Adelaide

Route

Depart

Return

Price

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 17/10

18:26-10:55

2 stops48h 59m

Adelaide

Mon 10/11

11:55-19:30

2 stops24h 05m

$2,092

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 27/7

06:40-12:05

2 stops38h 55m

Adelaide

Sun 3/8

09:15-16:57

2 stops46h 12m

$2,491

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 19/11

15:40-21:00

2 stops36h 50m

Adelaide

Sat 29/11

06:00-14:39

2 stops25h 09m

$2,493

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 24/6

16:56-11:35

2 stops28h 09m

Adelaide

Wed 16/7

10:05-21:00

2 stops25h 25m

$2,908

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 19/11

14:40-10:30

1 stop27h 20m

Adelaide

Sat 29/11

19:15-13:00

2 stops58h 15m

$3,130

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 19/7

19:03-11:35

2 stops26h 02m

Adelaide

Sat 26/7

12:35-21:00

2 stops22h 55m

$3,316

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 17/10

19:20-16:50

1 stop30h 00m

Adelaide

Wed 12/11

22:00-14:30

1 stop33h 00m

$3,870

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 24/6

20:35-20:05

1 stop33h 00m

Adelaide

Wed 16/7

21:50-15:45

1 stop32h 25m

$4,658

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 3/11

08:00-18:55

3 stops42h 25m

$964

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 24/7

18:45-10:20

2 stops25h 05m

$1,738

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 13 results
1
2

Best time to book a flight from Illinois to Adelaide

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

Rainfall in Adelaide by month

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

In terms of precipitation, rainfall in Adelaide ranges from 10.0 - 60.0 inches per month. July is typically the wettest month, when rainfall can reach 60.0 mm. January is typically the driest time to visit Adelaide when rainfall is around 10.0 mm.

Temperature in Adelaide by month

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

If weather is an important factor for your trip to Adelaide, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Adelaide

Get insights into the airlines that provide service to Adelaide. 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 Adelaide. Reviews last updated 13 June 2025.
Read through reviews of airlines operating flights from Illinois to Adelaide, such as Fiji Airways, Emirates and Air New Zealand. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.1
Very Good
194 reviews
Check prices

Food

7.5

Boarding

8.2

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Fiji Airways
8.1
Very Good
194 reviews
Fiji Airways
8.1
Very Good
194 reviews
Check prices

Food

7.5

Boarding

8.2

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Emirates
8.1
Very Good
3,265 reviews
Fiji Airways
8.1
Very Good
194 reviews
Check prices

Food

7.5

Boarding

8.2

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Air New Zealand
8.0
Very Good
483 reviews
Fiji Airways
8.1
Very Good
194 reviews
Check prices

Food

7.5

Boarding

8.2

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Cathay Pacific
7.6
Good
892 reviews
Fiji Airways
8.1
Very Good
194 reviews
Check prices

Food

7.5

Boarding

8.2

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Qantas Airways
7.5
Good
854 reviews
Fiji Airways
8.1
Very Good
194 reviews
Check prices

Food

7.5

Boarding

8.2

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

Related info for your journey

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

    Adelaide (ADL) is the airport you will fly into if you book a flight from Illinois to Adelaide. It is only a 6.6 km journey from Adelaide (ADL) to Adelaide’s city centre.

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

    One-way options have recently been found by users for as low as $1,738 on Qantas Airways. Other airlines that offer cheap prices include United Airlines from $1,764 and Qatar Airways from $2,340 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Adelaide 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 Illinois to Adelaide?

    Currently, June is the cheapest month in which you can book a flight from Illinois to Adelaide (average of $168). Flying from Illinois to Adelaide in October is currently the most expensive (average of $241). 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.

See more FAQs

Travelling to a place near Illinois?

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