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Find cheap flights from Illinois to Australia from $813

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Illinois to Australia departing on 13/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
Fri 7/6
Fri 14/6

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Good to know

Low season

April

High season

December

Cheapest flight

$813
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (35% more expensive on average)
Flight from Chicago O'Hare Airport to Sydney

FAQs for booking flights from Illinois to Australia

  • How does KAYAK find such low prices on flights from Illinois to Australia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Australia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Australia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Australia from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Australia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Australia with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Australia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Australia from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Illinois to Australia

Recent return flight deals

20/8Tue
1 stopQantas Airways
21h 40mORD-SYD
27/8Tue
1 stopQantas Airways
25h 19mSYD-ORD
$1,556
12/8Mon
1 stopQantas Airways
21h 41mORD-SYD
26/8Mon
1 stopQantas Airways
21h 21mSYD-ORD
$1,557
30/5Thu
2 stops
30h 18mORD-SYD
5/6Wed
3 stops
32h 09mSYD-ORD
$1,632
11/8Sun
1 stopAmerican Airlines
28h 15mORD-SYD
27/8Tue
1 stopAmerican Airlines
22h 06mSYD-ORD
$1,639
1/9Sun
1 stopAmerican Airlines
30h 10mORD-SYD
15/9Sun
2 stopsAmerican Airlines
38h 07mSYD-ORD
$1,644
10/9Tue
2 stopsAir New Zealand
25h 45mORD-BNE
17/9Tue
2 stopsAir New Zealand
23h 35mBNE-ORD
$1,786
1/9Sun
2 stopsAir New Zealand
24h 55mORD-SYD
15/9Sun
2 stopsAir New Zealand
27h 08mSYD-ORD
$1,797
6/6Thu
2 stops
30h 55mORD-SYD
13/6Thu
3 stops
32h 09mSYD-ORD
$1,915
29/8Thu
1 stopCathay Pacific
27h 45mORD-SYD
5/9Thu
1 stopCathay Pacific
31h 35mSYD-ORD
$2,030
2/11Sat
1 stopCathay Pacific
28h 20mORD-SYD
18/11Mon
1 stopCathay Pacific
31h 40mSYD-ORD
$2,080

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Recent one-way flight deals

13/8Tue
2 stops
53h 20mORD-SYD
$813
5/6Wed
3 stops
39h 40mORD-SYD
$1,022
2/7Tue
3 stops
46h 30mORD-SYD
$1,023
13/8Tue
1 stopAlaska Airlines
32h 30mORD-SYD
$1,308
30/8Fri
1 stopCathay Pacific
27h 45mORD-SYD
$1,389
1/11Fri
2 stopsChina Southern
35h 44mORD-SYD
$1,414
1/10Tue
2 stopsSingapore Airlines
44h 58mORD-SYD
$1,445
8/8Thu
2 stopsSingapore Airlines
32h 20mORD-SYD
$1,473
28/9Sat
1 stopCathay Pacific
25h 40mORD-SYD
$1,518
19/8Mon
3 stopsChina Southern
48h 23mORD-MEL
$1,639

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Last minute flights from Illinois to Australia

Last minute flight, train and bus deals

13/5Mon
multi-stop
31h 32mORD-SYD
20/5Mon
multi-stop
31h 45mSYD-ORD
$1,839
13/5Mon
multi-stop
31h 32mORD-SYD
20/5Mon
multi-stop
35h 40mSYD-ORD
$1,972
10/5Fri
multi-stop
39h 40mORD-SYD
16/6Sun
multi-stop
51h 14mSYD-ORD
$2,240
11/5Sat
multi-stopAir Canada
31h 29mORD-SYD
25/5Sat
multi-stopAir Canada
22h 49mSYD-ORD
$2,567
11/5Sat
multi-stopAir Canada
31h 29mORD-SYD
25/5Sat
multi-stopAir Canada
20h 09mSYD-ORD
$2,621
13/5Mon
multi-stopQantas Airways
21h 05mORD-SYD
20/5Mon
multi-stopQantas Airways
21h 27mSYD-ORD
$2,956
12/5Sun
multi-stopQantas Airways
21h 05mORD-SYD
19/5Sun
multi-stopQantas Airways
22h 55mSYD-ORD
$2,969
11/5Sat
multi-stopQatar Airways
42h 10mORD-SYD
13/5Mon
multi-stopQatar Airways
56h 35mSYD-ORD
$3,094
11/5Sat
multi-stopQatar Airways
30h 30mORD-SYD
13/5Mon
multi-stopQatar Airways
56h 35mSYD-ORD
$3,174
10/5Fri
multi-stopAir Tahiti Nui
28h 55mORD-SYD
16/6Sun
multi-stopAir Tahiti Nui
30h 06mSYD-ORD
$3,221

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Flights to Australia

Return flight deals:

Australia - Illinois

Cabin classes: