$709 Find Cheap Flights from Chicago O'Hare Airport to Australia – Compare and Save
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from O'Hare Intl to Australia departing on 24/10. 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.
Flight Deals
Cheap Flights from O'Hare Intl to Australia
Cheapest return prices found by our users on KAYAK in the last 5 daysBook Cheap O'Hare Intl to Australia Plane Tickets
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from O'Hare Intl to Australia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.
Recent return flight deals from O'Hare Intl to Australia
Fri, 13 Nov - Fri, 20 Nov
10:26 - 12:25ORD Chicago O'Hare Intl-MEL Melbourne
32h 59m3 stops Atlanta Hartsfield-Jackson Los Angeles Nadi
13:55 - 00:53MEL Melbourne-ORD Chicago O'Hare Intl
27h 58m3 stops Nadi Los Angeles Denver Intl
$1,683Multiple Airlines
Fri, 13 Nov - Fri, 20 Nov
10:26 - 12:25ORD Chicago O'Hare Intl-MEL Melbourne
32h 59m3 stops Atlanta Hartsfield-Jackson Los Angeles Nadi
13:55 - 06:15MEL Melbourne-ORD Chicago O'Hare Intl
33h 20m2 stops Nadi Los Angeles
$1,714Multiple Airlines
Thu, 11 Mar - Mon, 15 Mar
06:59 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne
31h 31m2 stops Los Angeles Manila Ninoy Aquino Intl
09:20 - 23:30MEL Melbourne-ORD Chicago O'Hare Intl
30h 10m2 stops Manila Ninoy Aquino Intl Los Angeles
$1,757Multiple Airlines
Mon, 1 Feb - Mon, 15 Feb
18:50 - 17:50ORD Chicago O'Hare Intl-MEL Melbourne
30h 00m1 stop Doha Hamad Intl
17:10 - 14:30MEL Melbourne-ORD Chicago O'Hare Intl
38h 20m1 stop Doha Hamad Intl
$1,763Qatar Airways
Mon, 22 Mar - Mon, 5 Apr
19:50 - 17:50ORD Chicago O'Hare Intl-MEL Melbourne
30h 00m1 stop Doha Hamad Intl
15:10 - 15:05MEL Melbourne-ORD Chicago O'Hare Intl
38h 55m1 stop Doha Hamad Intl
$1,766Qatar Airways
Thu, 4 Mar - Tue, 16 Mar
18:50 - 17:50ORD Chicago O'Hare Intl-MEL Melbourne
30h 00m1 stop Doha Hamad Intl
16:10 - 15:30MEL Melbourne-ORD Chicago O'Hare Intl
39h 20m1 stop Doha Hamad Intl
$1,771Multiple Airlines
Mon, 22 Mar - Mon, 5 Apr
19:50 - 17:50ORD Chicago O'Hare Intl-MEL Melbourne
30h 00m1 stop Doha Hamad Intl
15:10 - 15:05MEL Melbourne-ORD Chicago O'Hare Intl
38h 55m1 stop Doha Hamad Intl
$1,771Qatar Airways
Wed, 3 Mar - Tue, 16 Mar
18:50 - 17:50ORD Chicago O'Hare Intl-MEL Melbourne
30h 00m1 stop Doha Hamad Intl
17:10 - 15:30MEL Melbourne-ORD Chicago O'Hare Intl
38h 20m1 stop Doha Hamad Intl
$1,771Multiple Airlines
Mon, 12 Oct - Mon, 19 Oct
18:55 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
21h 10m1 stop Los Angeles
10:10 - 15:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
21h 49m1 stop Los Angeles
$2,367Qantas Airways
Tue, 13 Oct - Mon, 26 Oct
18:55 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
21h 10m1 stop Los Angeles
11:10 - 16:34SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
21h 24m1 stop Los Angeles
$2,371Qantas Airways
Recent one-way flight deals from O'Hare Intl to Australia
Sat, 24 Oct
20:01 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
42h 24m1 stop Los Angeles
$709Multiple Airlines
Sat, 5 Dec
07:25 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
54h 00m2 stops Denver Intl Los Angeles
$813Multiple Airlines
Tue, 2 Mar
05:40 - 09:30ORD Chicago O'Hare Intl-MEL Melbourne
34h 50m1 stop Los Angeles
$822Multiple Airlines
Wed, 21 Oct
20:01 - 07:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
43h 29m1 stop Los Angeles
$835Multiple Airlines
Tue, 20 Oct
20:01 - 07:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
43h 29m1 stop Los Angeles
$871Multiple Airlines
Sat, 20 Feb
05:40 - 09:30ORD Chicago O'Hare Intl-MEL Melbourne
34h 50m1 stop Los Angeles
$873Multiple Airlines
Fri, 4 Dec
22:37 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
38h 48m2 stops Atlanta Hartsfield-Jackson Los Angeles
$879Multiple Airlines
Tue, 1 Dec
07:00 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
30h 25m2 stops Denver Intl Los Angeles
$881Multiple Airlines
Thu, 31 Dec
08:10 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
31h 50m1 stop Los Angeles
$1,756Qantas Airways
Thu, 31 Dec
17:59 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
22h 01m1 stop Los Angeles
$1,777Qantas Airways
Recent last minute flight deals from O'Hare Intl to Australia
Mon, 5 Oct - Wed, 7 Oct
18:55 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
21h 10m1 stop Los Angeles
10:10 - 15:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
21h 49m1 stop Los Angeles
$2,371Qantas Airways
Mon, 5 Oct - Wed, 7 Oct
18:55 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
21h 10m1 stop Los Angeles
10:10 - 15:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
21h 49m1 stop Los Angeles
$2,371Qantas Airways
Mon, 5 Oct - Tue, 13 Oct
14:50 - 08:50ORD Chicago O'Hare Intl-MEL Melbourne
26h 00m1 stop Los Angeles
11:00 - 17:50MEL Melbourne-ORD Chicago O'Hare Intl
22h 50m1 stop Los Angeles
$2,380Delta
Tue, 6 Oct - Mon, 19 Oct
14:45 - 07:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
25h 05m1 stop Los Angeles
10:15 - 23:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
29h 32m1 stop Los Angeles
$2,380Delta
Tue, 6 Oct - Tue, 20 Oct
18:59 - 07:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
20h 51m1 stop Los Angeles
10:15 - 23:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
29h 32m1 stop Los Angeles
$2,380Delta
Tue, 6 Oct - Wed, 21 Oct
14:45 - 07:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
25h 05m1 stop Los Angeles
10:15 - 17:50SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
23h 35m1 stop Los Angeles
$2,380Delta
Tue, 6 Oct - Tue, 20 Oct
18:59 - 07:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
20h 51m1 stop Los Angeles
10:15 - 23:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
29h 32m1 stop Los Angeles
$2,380Delta
Tue, 6 Oct - Wed, 21 Oct
14:45 - 07:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
25h 05m1 stop Los Angeles
10:15 - 17:50SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
23h 35m1 stop Los Angeles
$2,380Delta
Tue, 6 Oct - Mon, 19 Oct
14:45 - 07:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith
25h 05m1 stop Los Angeles
10:15 - 23:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl
29h 32m1 stop Los Angeles
$2,380Delta
Sun, 4 Oct - Tue, 13 Oct
16:05 - 09:15ORD Chicago O'Hare Intl-MEL Melbourne
25h 10m1 stop San Francisco
11:55 - 00:55MEL Melbourne-ORD Chicago O'Hare Intl
29h 00m1 stop San Francisco
$2,385United Airlines
Booking Insights
KAYAK's insights & trends for O'Hare Intl to Australia flights
Get data-powered insights and trends into flights from O'Hare Intl to Australia to help you find the cheapest flights, the best time to fly, and much more.
Prices
Airlines
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What is the cheapest month to fly from Chicago O'Hare Intl Airport to Australia?
To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Australia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Chicago O'Hare Intl Airport to Australia is January, when tickets cost $1,751 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,514 and $2,498 respectively.
How far in advance should I book a flight from Chicago O'Hare Intl Airport to Australia?
To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Australia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below-average price on a flight from Chicago O'Hare Intl Airport to Australia, you should book around 2 weeks before departure, which saves you about 18% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.
Good to know
Low season | July |
|---|---|
High season | December |
Cheapest flight | $709 |
FAQs - booking Australia flights
Reviews of the top airline flying from O'Hare Intl to Australia
7.5
Qantas AirwaysOverall score based on 1101 reviews
7.4Comfort
7.2Entertainment
7.0Food
7.7Boarding
8.1Crew
Airline reviews
Despite having numerous passengers held up by American Airlines delays. Qantas (an AA partner) closed boarding with 0 flexibility
2.0 MediocreAnonymous, Aug 2026
Despite having numerous passengers held up by American Airlines delays. Qantas (an AA partner) closed boarding with 0 flexibility
Boarding , crew and meals were all amazing. Couldn't wish for a better LOOONG flight from Dallas to Sydney .
Boarding was effortless, the food was outstanding, the seats in Premium Economy were extremely comfortable, and the staff and crew were excellent.
PREMIUM ECONOMY - excellent !Brilliant new plane. Excellent tv catalogue. Good food. Good communication and service from all friend Australian crew. Good communication from captain. Best travel experience in years.
I couldn't hear all of the announcements. It was nice when they put them on the screen.
I liked boarding the plane. The staff were rude, the food was appalling and the chairs the most uncomfortable I have ever experienced
One of the best Qantas business flights I've had. Quality product
Loved the staff. The economy seats could have been bigger.
The food was terrible. And the flight attendants were very rude. One flight attendant wouldn’t help a passenger lift their carry-on. Another flight attendant wouldn’t give a man an extra blanket. And they walked by not even looking at the passengers to see if they needed a glass of water.
I have flown Qantas multiple times in the past it seemed this flight the plane had less seat room or the seats were way less comfortable than before. Everything else was about the same. Thanks
More options for your flight from O'Hare Intl to Australia
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Information on your arrival and departure airports
Cabin class types available on flights to Australia
Cabin classes available on flights to Australia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights from domestic origins to Australia
Flights from all regions of O'Hare Intl to Australia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights to other popular destinations
The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.
Flights from O'Hare Intl to popular regions in Australia
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