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Cheap flights from Illinois to Adelaide from $1,617

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
5 Apr — 12 Apr1
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 31 March 2025.

Round-trip from

$1,636

One-way from

$1,617

Popular in

December

Cheapest in

February

Average price

$1,687
3/5-10/5
  • 3/5-10/5
  • 4 total stops
  • 65h 49m total
  • Illinois to Adelaide
Search Deals
Fiji Airways
  • Fiji Airways
  • 15/5
  • 2 total stops
  • 25h 52m total
  • Illinois to Adelaide
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($722 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($198 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 31 March 2025.

Sat 3/511:53ORD - ADL
2 stops33h 12mMultiple Airlines
Sat 10/512:35ADL - ORD
2 stops32h 37mMultiple Airlines
Deal found 30/3$1,636
Sat 3/518:45ORD - ADL
2 stops26h 20mFiji Airways
Sat 10/512:35ADL - ORD
2 stops22h 19mFiji Airways
Deal found 30/3$2,056
Wed 12/1120:35ORD - ADL
2 stops46h 10mQantas Airways
Sun 23/1108:55ADL - ORD
2 stops25h 06mQantas Airways
Deal found 30/3$2,210
Sun 14/919:41ORD - ADL
2 stops35h 54mAir Canada
Sat 27/918:50ADL - ORD
2 stops49h 05mAir Canada
Deal found 30/3$2,220
Wed 18/607:10ORD - ADL
2 stops37h 15mAir New Zealand
Mon 30/608:55ADL - ORD
2 stops44h 27mAir New Zealand
Deal found 30/3$2,804
Sun 14/919:20ORD - ADL
1 stop30h 00mQatar Airways
Sat 27/912:15ADL - ORD
2 stops41h 20mQatar Airways
Deal found 30/3$3,723
Sun 14/920:35ORD - ADL
1 stop33h 00mEmirates
Sat 27/921:50ADL - ORD
1 stop32h 25mEmirates
Deal found 30/3$4,278

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 31 March 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

Sat 3/5

11:53-11:35

2 stops33h 12m

Adelaide

Sat 10/5

12:35-06:42

2 stops32h 37m

$1,636

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 3/5

18:45-11:35

2 stops26h 20m

Adelaide

Sat 10/5

12:35-20:24

2 stops22h 19m

$2,056

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 14/9

19:41-22:05

2 stops35h 54m

Adelaide

Sat 27/9

18:50-05:25

2 stops49h 05m

$2,220

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 30/5

15:15-10:20

2 stops28h 35m

Adelaide

Mon 9/6

08:55-23:35

2 stops29h 10m

$2,552

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 18/6

07:10-10:55

2 stops37h 15m

Adelaide

Mon 30/6

08:55-14:52

2 stops44h 27m

$2,804

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 14/9

19:20-15:50

1 stop30h 00m

Adelaide

Sat 27/9

12:15-15:05

2 stops41h 20m

$3,723

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 14/9

20:35-20:05

1 stop33h 00m

Adelaide

Sat 27/9

21:50-15:45

1 stop32h 25m

$4,278

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 15/5

19:13-11:35

2 stops25h 52m

$1,617

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 15/5

14:00-11:20

3 stops30h 50m

$2,091

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 15/5

19:20-15:50

1 stop30h 00m

$2,893

Flights are sorted by cheapest return flights first.

Deals found on 31/3

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 31 March 2025.
Fiji Airways
8.0
Very Good
180 reviews
Check prices

Food

7.5

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Comfort

8.0

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
8.0
Very Good
180 reviews
Fiji Airways
8.0
Very Good
180 reviews
Check prices

Food

7.5

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Comfort

8.0

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
8.0
Very Good
3,192 reviews
Fiji Airways
8.0
Very Good
180 reviews
Check prices

Food

7.5

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Comfort

8.0

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
459 reviews
Fiji Airways
8.0
Very Good
180 reviews
Check prices

Food

7.5

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Comfort

8.0

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
813 reviews
Fiji Airways
8.0
Very Good
180 reviews
Check prices

Food

7.5

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Comfort

8.0

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!
Qatar Airways
7.4
Good
3,541 reviews
Fiji Airways
8.0
Very Good
180 reviews
Check prices

Food

7.5

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Comfort

8.0

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.

  • 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?

Book flights to Illinois if you plan to visit one of these locations
Glenelg
Stirling

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