Find flights
When to book
Airlines
FAQs

Cheap flights from Illinois to Adelaide from $1,708

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ADL
4 May — 11 May1
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 29 April 2025.

Round-trip from

$2,179

One-way from

$1,708

Popular in

November

Cheapest in

February

Average price

$3,185
21/10-1/11
  • 21/10-1/11
  • 4 total stops
  • 50h 02m total
  • Illinois to Adelaide
Search Deals
Qantas Airways
  • Qantas Airways
  • 12/6
  • 2 total stops
  • 26h 14m total
  • Illinois to Adelaide
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($909 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($240 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 29 April 2025.

Tue 21/1018:20ORD - ADL
2 stops26h 45mMultiple Airlines
Sat 1/1113:15ADL - ORD
2 stops23h 17mMultiple Airlines
Deal found 28/4$2,179
Sat 1/1110:00ORD - ADL
2 stops33h 45mQantas Airways
Sun 30/1119:05ADL - ORD
2 stops58h 50mQantas Airways
Deal found 28/4$2,281
Tue 21/1016:25ORD - ADL
2 stops27h 00mAir New Zealand
Sat 1/1118:15ADL - ORD
3 stops46h 05mAir New Zealand
Deal found 28/4$2,365
Thu 12/618:53ORD - ADL
2 stops26h 12mFiji Airways
Thu 19/612:35ADL - ORD
2 stops22h 49mFiji Airways
Deal found 28/4$2,790
Thu 12/615:12ORD - ADL
2 stops27h 43mAmerican Airlines
Thu 19/608:00ADL - ORD
2 stops24h 23mAmerican Airlines
Deal found 28/4$3,124
Thu 12/614:33ORD - ADL
2 stops30h 02mUnited Airlines
Thu 19/606:05ADL - ORD
2 stops29h 33mUnited Airlines
Deal found 28/4$3,302
Tue 24/614:00ORD - ADL
3 stops33h 25mAir Canada
Wed 16/720:00ADL - ORD
3 stops50h 29mAir Canada
Deal found 28/4$3,588
Fri 2/519:20ORD - ADL
1 stop30h 00mQatar Airways
Sun 4/521:45ADL - ORD
2 stops55h 50mQatar Airways
Deal found 28/4$3,664
Thu 12/620:35ORD - ADL
1 stop33h 00mEmirates
Thu 19/621:50ADL - ORD
1 stop32h 25mEmirates
Deal found 28/4$4,993
Wed 18/611:08ORD - ADL
3 stops38h 42mSingapore Airlines
Mon 30/617:35ADL - ORD
3 stops44h 20mSingapore Airlines
Deal found 28/4$6,905
Fri 2/516:00ORD - ADL
2 stops33h 05mCathay Pacific
Sun 4/519:00ADL - ORD
2 stops57h 55mCathay Pacific
Deal found 28/4$6,922

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 29 April 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

Tue 21/10

18:20-12:35

2 stops26h 45m

Adelaide

Sat 1/11

13:15-21:02

2 stops23h 17m

$2,179

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 21/10

16:25-10:55

2 stops27h 00m

Adelaide

Sat 1/11

18:15-00:50

3 stops46h 05m

$2,365

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 24/6

18:53-10:20

2 stops24h 57m

Adelaide

Wed 16/7

08:00-19:14

2 stops25h 44m

$2,418

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 12/6

18:53-11:35

2 stops26h 12m

Adelaide

Thu 19/6

12:35-20:54

2 stops22h 49m

$2,790

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 12/6

15:12-09:25

2 stops27h 43m

Adelaide

Thu 19/6

08:00-17:53

2 stops24h 23m

$3,124

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 12/6

14:33-11:05

2 stops30h 02m

Adelaide

Thu 19/6

06:05-21:08

2 stops29h 33m

$3,302

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 24/6

14:00-13:55

3 stops33h 25m

Adelaide

Wed 16/7

20:00-07:59

3 stops50h 29m

$3,588

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 11/6

19:20-15:50

1 stop30h 00m

Adelaide

Wed 18/6

18:20-15:05

2 stops35h 15m

$3,886

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 12/6

20:35-20:05

1 stop33h 00m

Adelaide

Thu 19/6

21:50-15:45

1 stop32h 25m

$4,993

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 18/6

11:08-16:20

3 stops38h 42m

Adelaide

Mon 30/6

17:35-23:25

3 stops44h 20m

$6,905

Flights are sorted by cheapest return flights first.

Deals found on 28/4

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 29 April 2025.
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.5

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
190 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.5

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!
Singapore Airlines
8.1
Very Good
1,292 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.5

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
3,213 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.5

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
471 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.5

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
828 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Crew

8.5

Entertainment

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.5

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 $1,708 on Qantas Airways. Other airlines that offer cheap prices include Air Canada from $2,448 and Emirates from $3,271 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?

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

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.

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 Illinois to Adelaide?

Deals for Illinois to Adelaide flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Illinois to Adelaide?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Adelaide from Illinois.

Can Cheapflights find flights from Illinois to Adelaide with no change fees?

Need flexible booking options for your flight to Adelaide from Illinois? 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 Illinois to Adelaide become cheaper?

Yes! Start tracking prices for Illinois to Adelaide flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.
Site
©2025 Cheapflights