Find flights
When to book
FAQs

Cheap flights from Illinois to Adelaide from $1,327

ORD — ADL
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Adelaide

Enter your travel dates to find the best prices.

Cheapest flights from Illinois to Adelaide

Mon 16/1117:10 -
2 stops54h 15m
Fri 11/1222:00 -
1 stop33h 00m
Deal found 4/11$2,119
Tue 17/1110:35 -
2 stops36h 50m
Fri 11/1222:00 -
1 stop33h 00m
Deal found 4/11$2,215
Sun 15/1117:10 -
2 stops54h 15m
Fri 11/1222:00 -
1 stop33h 00m
Deal found 4/11$2,216
Thu 12/1117:10 -
2 stops54h 15m
Fri 11/1222:00 -
1 stop33h 00m
Deal found 4/11$2,233
Mon 16/1117:10 -
2 stops54h 15m
Wed 9/1217:50 -
2 stops61h 10m
Deal found 4/11$2,245
Tue 17/1110:35 -
2 stops36h 50m
Thu 10/1216:50 -
2 stops62h 10m
Deal found 4/11$2,251
Tue 17/1110:35 -
2 stops36h 50m
Sat 12/1222:00 -
1 stop33h 00m
Deal found 4/11$2,272
Thu 12/1117:10 -
2 stops54h 15m
Sat 12/1222:00 -
1 stop33h 00m
Deal found 4/11$2,291
Mon 16/1118:50 -
1 stop28h 35m
Fri 11/1222:00 -
1 stop33h 00m
Deal found 4/11$2,299
Tue 17/1110:35 -
2 stops36h 50m
Sun 13/1210:40 -
2 stops44h 20m
Deal found 4/11$2,308
Thu 12/1117:10 -
2 stops54h 15m
Sun 13/1206:10 -
2 stops48h 50m
Deal found 4/11$2,326

Find flight deals from Illinois to Adelaide

Round-trip from

$1,856

One-way from

$1,327

Popular in

December

Cheapest in

February

Average price

$2,088
Qatar Airways
  • Qatar Airways
  • 3/3-15/3
  • 2 total stops
  • 62h 45m total
  • Illinois to Adelaide
Search Deals
19/2-31/12
  • 19/2-31/12
  • 2 total stops
  • 37h 45m total
  • Illinois to Adelaide
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($453 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($100 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Illinois to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Fri 19/2

05:40-11:55

2 stops37h 45m

Adelaide

Wed 31/12

00:00-08:30

Nonstop0h 00m

$1,327

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Fri 19/2

14:10-10:30

1 stop27h 50m

Adelaide

Wed 31/12

00:00-08:30

Nonstop0h 00m

$1,470

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Sat 26/12

18:45-22:35

2 stops35h 20m

Adelaide

Wed 31/12

00:00-08:30

Nonstop0h 00m

$1,888

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Mon 1/3

18:50-17:05

1 stop29h 45m

Adelaide

Wed 17/3

22:00-15:30

1 stop33h 00m

$1,895

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Sat 6/3

18:50-20:40

2 stops33h 20m

Adelaide

Sun 14/3

22:00-15:30

1 stop33h 00m

$2,080
Fastest return journey

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Sat 26/12

15:57-09:30

1 stop25h 03m

Adelaide

Wed 31/12

00:00-08:30

Nonstop0h 00m

$2,142

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Thu 4/2

18:50-17:05

1 stop29h 45m

Adelaide

Mon 8/2

22:00-14:30

1 stop33h 00m

$2,195

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Tue 17/11

10:35-15:55

2 stops36h 50m

Adelaide

Fri 11/12

19:50-14:30

2 stops59h 10m

$2,251

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Wed 31/3

19:20-20:45

2 stops33h 55m

Adelaide

Sun 4/4

21:40-15:05

1 stop31h 55m

$2,281

ChicagoAdelaide

ORD Chicago O'Hare Intl - ADL Adelaide

ORDADL

Chicago O'Hare Intl

Mon 16/11

17:10-15:55

2 stops54h 15m

Adelaide

Sun 13/12

06:10-14:30

2 stops48h 50m

$2,326

Flights are sorted by cheapest return flights first.

Deals found on 3/11

Showing 1-10 of 16 resultsSorted by cheapest first
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

Cheapflights Insights

Everything you need to know about your flight from Illinois to Adelaide

No data available for this route at this time. Please check back soon.

Related info for your journey

  • 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.

  • How long is the flight from Illinois to Adelaide?

    A quick flight from Illinois to Adelaide can take about 29h 45m. Qatar Airways provides one of the quickest options available for as low as $1,895. Illinois and Adelaide are separated by a distance of 15937 km.

  • 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.

See more FAQs

Travelling to a place near Adelaide?

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

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

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.