$799 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 31/10. 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.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from O'Hare Intl to Australia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney3 stops$1,608
Brisbane
Brisbane3 stops$1,643
Adelaide
Adelaide3 stops$1,935
Perth
Perth2 stops$2,411
Cairns
Cairns3 stops$1,970
Canberra
Canberra2 stops$2,115
Sydney
Sydney3 stops$1,608
Brisbane
Brisbane3 stops$1,643
Adelaide
Adelaide3 stops$1,935
Perth
Perth2 stops$2,411
Cairns
Cairns3 stops$1,970
Canberra
Canberra2 stops$2,115

Book 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

Tue, 18 Aug - Tue, 25 Aug
Multiple Airlines Logo
09:20 - 11:50
ORD
-
SYD
35h 30m
3 stops
Multiple Airlines Logo
13:15 - 06:17
SYD
-
ORD
32h 02m
2 stops
$1,608Multiple Airlines
Sat, 22 Aug - Sat, 5 Sep
Multiple Airlines Logo
13:59 - 22:25
ORD
-
SYD
41h 26m
3 stops
Multiple Airlines Logo
13:15 - 05:59
SYD
-
ORD
31h 44m
2 stops
$1,643Multiple Airlines
Fri, 14 Aug - Fri, 21 Aug
Multiple Airlines Logo
10:16 - 10:35
ORD
-
BNE
33h 19m
3 stops
Multiple Airlines Logo
11:35 - 06:17
BNE
-
ORD
33h 42m
2 stops
$1,643Multiple Airlines
Fri, 27 Nov - Sun, 6 Dec
ANA Logo
16:25 - 10:30
ORD
-
SYD
25h 05m
1 stop
ANA Logo
21:45 - 07:20
SYD
-
ORD
26h 35m
1 stop
$1,813ANA
Tue, 15 Sep - Mon, 9 Nov
ANA Logo
17:45 - 09:25
ORD
-
SYD
24h 40m
1 stop
ANA Logo
21:45 - 07:20
SYD
-
ORD
26h 35m
1 stop
$1,820ANA
Mon, 24 Aug - Mon, 31 Aug
Air Canada Logo
15:40 - 19:25
ORD
-
ADL
37h 15m
2 stops
Air Canada Logo
19:00 - 14:36
ADL
-
ORD
34h 06m
2 stops
$2,078Air Canada
Mon, 24 Aug - Mon, 31 Aug
Air Canada Logo
15:40 - 13:55
ORD
-
ADL
31h 45m
2 stops
Air Canada Logo
19:00 - 14:36
ADL
-
ORD
34h 06m
2 stops
$2,079Air Canada
Sat, 25 Jul - Mon, 3 Aug
SWISS Logo
14:40 - 06:50
ORD
-
PER
51h 10m
2 stops
SWISS Logo
08:20 - 12:35
PER
-
ORD
41h 15m
2 stops
$2,427SWISS
Tue, 25 Aug - Tue, 1 Sep
Qantas Airways Logo
17:05 - 14:05
ORD
-
PPP
30h 00m
2 stops
Qantas Airways Logo
15:40 - 16:51
PPP
-
ORD
40h 11m
2 stops
$2,835Qantas Airways
Tue, 25 Aug - Tue, 1 Sep
Qantas Airways Logo
17:05 - 14:05
ORD
-
PPP
30h 00m
2 stops
Qantas Airways Logo
15:40 - 16:51
PPP
-
ORD
40h 11m
2 stops
$2,887Qantas Airways
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.

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 November, when tickets cost $162 (return) on average. On the other hand, the most expensive months are July and April, when the average cost of return tickets is $1,104 and $1,030 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 5 weeks before departure, which saves you about 12% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$799
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flight from Chicago O'Hare Airport to Sydney

FAQs - booking Australia flights

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport 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 Chicago O'Hare Airport to Australia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chicago O'Hare Airport 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 Chicago O'Hare Airport 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 Chicago O'Hare Airport 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 Chicago O'Hare Airport 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 Chicago O'Hare Airport to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from O'Hare Intl to Australia

 
Need help choosing which airline to fly with from O'Hare Intl to Australia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Qantas AirwaysOverall score based on 1061 reviews
7.7Boarding
7.0Food
7.4Comfort
7.2Entertainment
8.1Crew
Airline reviews

Boarding was effortless, the food was outstanding, the seats in Premium Economy were extremely comfortable, and the staff and crew were excellent.

10.0 ExcellentAnonymous, June 2026
DFW - MEL
Read more Qantas Airways reviews

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

I disliked the fact that they forced people to put up their seats during meal service

Headphone jacks worked poorly, seat recline was broken. Planes were rundown.

Everything you need to know for your flight from O'Hare Intl to Australia

Information on your arrival and departure airports

Chicago O'Hare Airport (ORD)