$717 Find Cheap Flights from Chicago O'Hare Airport to Australia

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 27/5. 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
Sydney1 stop$1,345
Brisbane
Brisbane1 stop$1,355
Perth
Perth2 stops$2,196
Adelaide
Adelaide2 stops$1,492
Cairns
Cairns2 stops$1,927
Canberra
Canberra2 stops$1,945
Sydney
Sydney1 stop$1,345
Brisbane
Brisbane1 stop$1,355
Perth
Perth2 stops$2,196
Adelaide
Adelaide2 stops$1,492
Cairns
Cairns2 stops$1,927
Canberra
Canberra2 stops$1,945

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

Mon, 23 Feb - Wed, 4 Mar
Qantas Airways Logo
13:24 - 09:30
ORD
-
MEL
27h 06m
1 stop
Qantas Airways Logo
06:45 - 14:53
MEL
-
ORD
25h 08m
2 stops
$1,335Qantas Airways
Tue, 17 Feb - Wed, 4 Mar
Qantas Airways Logo
14:33 - 09:00
ORD
-
SYD
25h 27m
1 stop
Qantas Airways Logo
07:05 - 14:53
SYD
-
ORD
24h 48m
2 stops
$1,345Qantas Airways
Sat, 7 Feb - Sat, 21 Feb
Qantas Airways Logo
18:40 - 15:35
ORD
-
MEL
27h 55m
2 stops
Qantas Airways Logo
12:00 - 21:35
MEL
-
ORD
26h 35m
1 stop
$1,349Qantas Airways
Tue, 24 Feb - Wed, 11 Mar
Air Canada Logo
15:35 - 08:45
ORD
-
BNE
25h 10m
1 stop
Air Canada Logo
09:45 - 14:41
BNE
-
ORD
19h 56m
1 stop
$1,355Air Canada
Sun, 22 Feb - Wed, 11 Mar
Air Canada Logo
15:35 - 08:45
ORD
-
BNE
25h 10m
1 stop
Air Canada Logo
09:45 - 14:41
BNE
-
ORD
19h 56m
1 stop
$1,358Air Canada
Tue, 28 Apr - Tue, 19 May
Multiple Airlines Logo
15:40 - 07:20
ORD
-
SYD
24h 40m
1 stop
Multiple Airlines Logo
07:00 - 14:45
SYD
-
ORD
22h 45m
2 stops
$1,392Multiple Airlines
Tue, 28 Apr - Tue, 19 May
Multiple Airlines Logo
09:50 - 07:20
ORD
-
SYD
30h 30m
2 stops
Multiple Airlines Logo
07:00 - 14:45
SYD
-
ORD
22h 45m
2 stops
$1,404Multiple Airlines
Sat, 14 Mar - Sat, 21 Mar
United Airlines Logo
16:35 - 08:30
ORD
-
ADL
24h 25m
1 stop
United Airlines Logo
14:15 - 19:52
ADL
-
ORD
21h 07m
1 stop
$1,810United Airlines
Sun, 12 Apr - Thu, 14 May
ANA Logo
17:45 - 19:45
ORD
-
HBA
35h 00m
2 stops
ANA Logo
09:55 - 08:40
HBA
-
ORD
37h 45m
2 stops
$2,143ANA
Sun, 12 Apr - Sat, 16 May
ANA Logo
17:45 - 19:45
ORD
-
HBA
35h 00m
2 stops
ANA Logo
12:45 - 14:55
HBA
-
ORD
41h 10m
2 stops
$2,159ANA
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 May, when tickets cost $1,214 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,259 and $2,087 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 3 weeks before departure, which saves you about 16% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$717
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 18% lower 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 980 reviews
7.2Entertainment
7.0Food
7.7Boarding
8.2Crew
7.5Comfort
Airline reviews

Flight was canceled. I was not alerted. It was only kayak that alerted me

2.0 MediocreGerard, Nov 2025
CBR - BNE
Read more Qantas Airways reviews

Flight was canceled. I was not alerted. It was only kayak that alerted me

Flight was 2.5 hours late leaving. We spent 50 minutes of that sitting on the plane with no explanation. They did reduce the time in the air so we arrived a little less late which was something. The cheese and crackers were okay but the wine was terrible.

Couldn't access entertainment on app as said in an email

Excellent as always, I won't fly to Australia, and back to the US on any other airline. The flight crew is always top notch, and have a way to make one feel extra special. Thank you for your service, I would rate Qantas Airways a 10+.

After already paying for excess luggage prior to flight, i was advised AT check in that i had to pay $816 or forfeit my flight! The lady at the counter was SO rude and had already started offboarding me when i said i would pay it after asking her three times for the exact amount! Have lodged a formal complaint yet heard nothing. Will not ever travel via Qantas again

A few more inches of legroom is all i ask

One of the best Qantas business flights I've had. Quality product

Business class points redemption - good value for points paid, dubious value if out of your own pocket, domestic class business product okay for this length of flight. The flight left and arrived on time, crew were good, aircraft was a bit old and tired, but still miles ahead of their competitors in Virgin and Jetstar.

Airline running better than post Covid, proper boarding process now implemented, some aircraft feeling a bit old and tired, crew fine, online experience better.

Five hour flight instead of four hours due to westerly headwinds which wasn’t the fault of Qantas !

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)