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Find cheap flights from Illinois to Australia from $538

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 8/24. 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
0 bags
Thu 6/20
Thu 6/27

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In the last 7 days travelers have searched 42,596,105 times on KAYAK, and here is why:

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Good to know

Low season

April

High season

December

Cheapest flight

$538
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 27% increase in price.
Flight from Chicago O'Hare Airport to Melbourne Airport (Tullamarine)

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 round-trip 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 round-trip flight deals

9/2Mon
1 stopAmerican Airlines
21h 41mORD-SYD
9/11Wed
1 stopAmerican Airlines
20h 09mSYD-ORD
$1,084
10/30Wed
1 stopAmerican Airlines
26h 28mORD-BNE
11/27Wed
1 stopAmerican Airlines
18h 49mBNE-ORD
$1,086
8/6Tue
2 stopsAir Canada
29h 25mORD-SYD
8/13Tue
2 stopsAir Canada
37h 38mSYD-ORD
$1,144
8/6Tue
2 stopsAir Canada
29h 25mORD-SYD
8/13Tue
3 stopsAir Canada
37h 38mSYD-ORD
$1,149
9/3Tue
2 stopsAir New Zealand
25h 55mORD-SYD
9/10Tue
2 stopsAir New Zealand
24h 00mSYD-ORD
$1,189
8/13Tue
2 stopsAir New Zealand
26h 30mORD-BNE
8/20Tue
2 stopsAir New Zealand
23h 35mBNE-ORD
$1,190
11/3Sun
2 stops
26h 59mORD-AVV
11/13Wed
2 stops
26h 41mAVV-ORD
$1,261
10/29Tue
2 stops
24h 54mORD-MEL
11/18Mon
2 stops
24h 41mMEL-ORD
$1,298
11/3Sun
1 stopQantas Airways
20h 37mSTL-SYD
11/13Wed
1 stopQantas Airways
28h 45mSYD-STL
$1,312
11/1Fri
1 stopQantas Airways
21h 37mSTL-SYD
11/17Sun
1 stopQantas Airways
28h 45mSYD-STL
$1,359

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Recent one-way flight deals

8/24Sat
2 stops
35h 17mORD-MEL
$538
8/25Sun
3 stops
49h 50mORD-AVV
$617
10/25Fri
2 stopsIberia
38h 30mORD-MEL
$916
8/6Tue
2 stopsSingapore Airlines
43h 00mORD-BNE
$992
10/11Fri
2 stopsPhilippine Airlines
31h 10mORD-MEL
$1,009
8/6Tue
1 stopCathay Pacific
40h 30mORD-BNE
$1,034
8/24Sat
1 stopCathay Pacific
28h 10mORD-MEL
$1,046
9/10Tue
2 stopsSingapore Airlines
47h 30mORD-ADL
$1,065
8/5Mon
2 stopsPhilippine Airlines
34h 26mORD-SYD
$1,106
7/16Tue
2 stopsIberia
33h 10mORD-MEL
$1,301

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Last minute flights from Illinois to Australia

Last minute flight, train and bus deals

5/25Sat
multi-stopAlaska Airlines
31h 05mORD-SYD
6/1Sat
multi-stopAlaska Airlines
23h 05mSYD-ORD
$1,255
5/25Sat
multi-stopAlaska Airlines
31h 05mORD-SYD
6/1Sat
multi-stopAlaska Airlines
32h 25mSYD-ORD
$1,381
5/23Thu
multi-stopQantas Airways
22h 03mSTL-SYD
5/25Sat
multi-stopQantas Airways
29h 02mSYD-STL
$1,399
5/23Thu
multi-stopQantas Airways
23h 08mSTL-SYD
5/25Sat
multi-stopQantas Airways
64h 42mSYD-STL
$1,667
5/23Thu
multi-stop
23h 58mORD-SYD
5/25Sat
multi-stop
51h 25mSYD-ORD
$1,804
5/23Thu
multi-stopAir Canada
24h 40mORD-SYD
5/29Wed
multi-stopAir Canada
22h 49mSYD-ORD
$1,854
5/23Thu
multi-stopAir Canada
26h 05mORD-SYD
5/29Wed
multi-stopAir Canada
22h 49mSYD-ORD
$1,859
5/23Thu
multi-stop
23h 58mORD-SYD
5/25Sat
multi-stop
47h 00mSYD-ORD
$1,864
5/22Wed
multi-stopFinnair
42h 25mORD-SYD
6/20Thu
multi-stopFinnair
46h 10mSYD-ORD
$2,136
5/25Sat
multi-stopFinnair
44h 15mORD-SYD
6/5Wed
multi-stopFinnair
58h 35mSYD-ORD
$6,722

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