Find flights
When to book
FAQs & Tips
Deals

Find cheap flights from Illinois to Australia from $748

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 6/24. 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
Sat 6/8
Sat 6/15

Search hundreds of travel sites at once for deals on flights to Australia

In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

Low season

April

High season

December

Cheapest flight

$748
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from St. Louis 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 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

8/20Tue
1 stopQantas Airways
21h 40mORD-SYD
8/27Tue
1 stopQantas Airways
25h 19mSYD-ORD
$1,028
8/12Mon
1 stopQantas Airways
21h 41mORD-SYD
8/26Mon
1 stopQantas Airways
21h 21mSYD-ORD
$1,029
5/30Thu
2 stops
30h 18mORD-SYD
6/5Wed
3 stops
32h 09mSYD-ORD
$1,078
10/28Mon
1 stopAmerican Airlines
24h 04mORD-SYD
11/6Wed
1 stopAmerican Airlines
19h 55mSYD-ORD
$1,083
8/20Tue
1 stopAmerican Airlines
22h 59mORD-SYD
8/27Tue
2 stopsAmerican Airlines
25h 07mSYD-ORD
$1,086
6/7Fri
3 stops
32h 13mORD-SYD
6/14Fri
3 stops
32h 09mSYD-ORD
$1,087
9/10Tue
2 stopsAir New Zealand
25h 45mORD-BNE
9/17Tue
2 stopsAir New Zealand
23h 35mBNE-ORD
$1,180
9/1Sun
2 stopsAir New Zealand
24h 55mORD-SYD
9/15Sun
2 stopsAir New Zealand
27h 08mSYD-ORD
$1,187
6/5Wed
1 stopUnited Airlines
22h 05mORD-SYD
6/12Wed
1 stopUnited Airlines
20h 04mSYD-ORD
$1,385
9/14Sat
1 stopUnited Airlines
42h 24mORD-SYD
9/28Sat
2 stopsUnited Airlines
28h 39mSYD-ORD
$1,419

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/24Mon
3 stops
40h 40mSTL-SYD
$748
6/24Mon
2 stops
33h 19mSTL-SYD
$759
11/1Fri
2 stopsChina Southern
35h 44mORD-SYD
$934
8/13Tue
2 stopsSingapore Airlines
32h 20mORD-SYD
$950
8/13Tue
1 stopCathay Pacific
25h 40mORD-SYD
$994
7/30Tue
1 stopCathay Pacific
28h 10mORD-MEL
$1,022
10/9Wed
2 stopsUnited Airlines
31h 10mSTL-SYD
$1,027
7/30Tue
2 stopsSingapore Airlines
32h 25mORD-MEL
$1,030
9/13Fri
2 stopsUnited Airlines
23h 09mSTL-SYD
$1,076
8/19Mon
3 stopsChina Southern
48h 23mORD-MEL
$1,083

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Australia

Last minute flight, train and bus deals

5/13Mon
multi-stop
31h 32mORD-SYD
5/20Mon
multi-stop
31h 45mSYD-ORD
$1,215
5/13Mon
multi-stop
31h 32mORD-SYD
5/20Mon
multi-stop
35h 40mSYD-ORD
$1,303
5/10Fri
multi-stop
39h 40mORD-SYD
6/16Sun
multi-stop
51h 14mSYD-ORD
$1,480
5/11Sat
multi-stopAir Canada
31h 29mORD-SYD
5/25Sat
multi-stopAir Canada
22h 49mSYD-ORD
$1,841
5/11Sat
multi-stopAir Canada
31h 29mORD-SYD
5/25Sat
multi-stopAir Canada
35h 16mSYD-ORD
$1,877
5/13Mon
multi-stopQantas Airways
21h 05mORD-SYD
5/20Mon
multi-stopQantas Airways
21h 27mSYD-ORD
$1,953
5/13Mon
multi-stopQantas Airways
21h 05mORD-SYD
5/19Sun
multi-stopQantas Airways
21h 30mSYD-ORD
$1,969
5/11Sat
multi-stopQatar Airways
30h 30mORD-SYD
5/13Mon
multi-stopQatar Airways
56h 35mSYD-ORD
$2,097
5/10Fri
multi-stopAir Tahiti Nui
28h 55mORD-SYD
6/16Sun
multi-stopAir Tahiti Nui
30h 06mSYD-ORD
$2,128
5/11Sat
multi-stopQatar Airways
42h 10mORD-SYD
5/13Mon
multi-stopQatar Airways
56h 35mSYD-ORD
$2,162

Search by stops

Search by airline

Search by price

Flights to Australia

Return flight deals:

Australia - Illinois

Cabin classes: