$686 Find Cheap Flights from Illinois to Australia

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Useful Info
Useful Info

Good to know

Low seasonApril
High seasonDecember
Cheapest flight$686
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly (41% 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 from Illinois to Australia is likely to change within 7 days, so travellers 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 from Illinois to Australia with an airline and back 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 from Illinois to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Australia?

    Based on KAYAK data, the cheapest day to fly to Australia is Friday when return tickets can be as cheap as $1,438. On the other hand, the most expensive day to fly is Thursday, when return prices are $3,843 on average.

  • What is the cheapest time of day to fly to Australia?

    The cheapest time of day to fly to Australia is generally in the evening, when round-trip flights cost $1,180 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Australia is generally at night, which is peak travel time and where the average cost of a ticket is $1,621.

  • What is the cheapest month to fly from Illinois to Australia?

    The cheapest month for flights from Illinois to Australia is April, when tickets cost $2,068 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $3,378 and $3,246 respectively.

  • How far in advance should I book a flight from Illinois to Australia?

    To get a below-average price on the flight from Illinois to Australia, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

  • How long is the flight to Australia?

    An average direct flight from Illinois to Australia takes 30h 24m, covering a distance of 24155 km. The shortest route is St. Louis (STL) to Sydney (SYD) with an average flight time of 20h 08m.

  • What are the most popular destinations in Australia?

    Based on KAYAK flight searches, the most popular destination is Sydney (42% of total searches to Australia). The next most popular destinations are Melbourne (24%) and Brisbane (12%). Searches for flights to Perth (4%), to Adelaide (3%), and to Cairns (2%) are also popular.

Book cheap flights from Illinois to Australia

Recent return flight deals

23/8sáb.
2 stopsANA
31h 55mORD-SYD
8/9lun.
2 stopsANA
32h 11mSYD-ORD
$1,783
11/6mié.
2 stops
51h 49mORD-SYD
18/6mié.
1 stop
28h 06mSYD-ORD
$1,805
27/9sáb.
2 stopsFiji Airways
25h 42mORD-SYD
11/10sáb.
2 stopsFiji Airways
22h 17mSYD-ORD
$1,830
18/10sáb.
2 stopsFiji Airways
24h 22mORD-BNE
25/10sáb.
2 stopsFiji Airways
24h 22mBNE-ORD
$1,851
30/7mié.
2 stopsAir New Zealand
27h 19mORD-SYD
6/8mié.
2 stopsAir New Zealand
26h 09mSYD-ORD
$1,869
9/6lun.
1 stopQantas Airways
20h 08mSTL-SYD
20/6vie.
1 stopQantas Airways
28h 49mSYD-STL
$1,962
26/10dom.
2 stopsAir New Zealand
26h 35mORD-SYD
24/11lun.
2 stopsAir New Zealand
30h 55mSYD-ORD
$1,971
24/6mar.
1 stopQantas Airways
33h 37mSTL-SYD
8/7mar.
1 stopQantas Airways
29h 11mSYD-STL
$1,999
22/10mié.
2 stopsTurkish Airlines
52h 40mORD-MEL
12/11mié.
2 stopsTurkish Airlines
38h 45mMEL-ORD
$2,048
14/9dom.
2 stopsTurkish Airlines
40h 35mORD-SYD
19/9vie.
2 stopsTurkish Airlines
36h 00mSYD-ORD
$2,241

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Recent one-way flight deals

15/8vie.
2 stops
52h 22mORD-SYD
$686
26/8mar.
2 stops
32h 05mSTL-SYD
$886
20/9sáb.
2 stopsFiji Airways
24h 32mORD-BNE
$1,052
13/5mar.
2 stopsFiji Airways
25h 11mSTL-MEL
$1,080
1/9lun.
1 stopANA
34h 30mORD-SYD
$1,080
8/9lun.
1 stopANA
34h 30mORD-SYD
$1,110
2/7mié.
2 stopsDelta
33h 35mSTL-SYD
$1,164
12/5lun.
2 stopsAir New Zealand
25h 39mSTL-MEL
$1,221
1/9lun.
2 stopsDelta
30h 05mMDW-SYD
$1,313
10/5sáb.
2 stopsAir New Zealand
43h 45mSTL-MEL
$1,355

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Last minute flights from Illinois to Australia

Last minute flight, train and bus deals

4/5dom.
multi-stopCathay Pacific
27h 50mORD-SYD
21/5mié.
multi-stopCathay Pacific
31h 35mSYD-ORD
$2,132
2/5vie.
multi-stop
47h 05mORD-SYD
6/6vie.
multi-stop
27h 57mSYD-ORD
$2,171
6/5mar.
multi-stop
30h 35mORD-MEL
25/5dom.
multi-stop
32h 47mMEL-ORD
$2,180
4/5dom.
multi-stopANA
34h 30mORD-SYD
21/5mié.
multi-stopANA
32h 14mSYD-ORD
$2,396
2/5vie.
multi-stopHawaiian Airlines
37h 01mORD-SYD
6/6vie.
multi-stopHawaiian Airlines
36h 15mSYD-ORD
$2,407
6/5mar.
multi-stopFiji Airways
35h 57mORD-SYD
27/5mar.
multi-stopFiji Airways
22h 09mSYD-ORD
$2,434
1/5jue.
multi-stopFiji Airways
27h 48mSTL-SYD
8/5jue.
multi-stopFiji Airways
31h 30mSYD-STL
$2,443
5/5lun.
multi-stopAlaska Airlines
57h 26mORD-SYD
11/5dom.
multi-stopAlaska Airlines
23h 25mSYD-ORD
$2,491
1/5jue.
multi-stopAlaska Airlines
46h 15mSTL-SYD
8/5jue.
multi-stopAlaska Airlines
55h 28mSYD-STL
$2,540
6/5mar.
multi-stopANA
34h 30mORD-SYD
27/5mar.
multi-stopANA
32h 38mSYD-ORD
$2,607

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Everything you need to know for your flight to Australia

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class Flights to Australia
Business Class Flights to Australia
Prem Econ Class Flights to Australia
Economy class Flights to Australia

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