$598 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 21/4. 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
Sydney2 stops$1,556
Brisbane
Brisbane1 stop$1,237
Perth
Perth2 stops$1,601
Adelaide
Adelaide2 stops$1,311
Cairns
Cairns2 stops$2,132
Canberra
Canberra2 stops$2,224
Sydney
Sydney2 stops$1,556
Brisbane
Brisbane1 stop$1,237
Perth
Perth2 stops$1,601
Adelaide
Adelaide2 stops$1,311
Cairns
Cairns2 stops$2,132
Canberra
Canberra2 stops$2,224

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

Sun, 12 Apr - Mon, 27 Apr
Multiple Airlines Logo
15:40 - 07:05
ORD
-
BNE
24h 25m
1 stop
Multiple Airlines Logo
10:00 - 05:27
BNE
-
ORD
34h 27m
2 stops
$1,237Multiple Airlines
Mon, 23 Mar - Tue, 21 Apr
Air Canada Logo
15:35 - 07:45
ORD
-
BNE
25h 10m
1 stop
Air Canada Logo
10:00 - 14:45
BNE
-
ORD
19h 45m
1 stop
$1,239Air Canada
Tue, 21 Apr - Wed, 29 Apr
Air Canada Logo
12:50 - 07:05
ORD
-
BNE
27h 15m
2 stops
Air Canada Logo
10:00 - 14:45
BNE
-
ORD
19h 45m
1 stop
$1,243Air Canada
Mon, 23 Mar - Tue, 21 Apr
Air Canada Logo
15:35 - 07:45
ORD
-
BNE
25h 10m
1 stop
Air Canada Logo
10:00 - 20:05
BNE
-
ORD
25h 05m
2 stops
$1,245Air Canada
Mon, 23 Mar - Tue, 21 Apr
Air Canada Logo
12:50 - 07:45
ORD
-
BNE
27h 55m
2 stops
Air Canada Logo
10:00 - 20:05
BNE
-
ORD
25h 05m
2 stops
$1,249Air Canada
Mon, 20 Apr - Mon, 4 May
Multiple Airlines Logo
15:40 - 07:05
ORD
-
BNE
24h 25m
1 stop
Multiple Airlines Logo
10:00 - 05:25
BNE
-
ORD
34h 25m
2 stops
$1,250Multiple Airlines
Wed, 25 Mar - Wed, 29 Apr
Qantas Airways Logo
18:49 - 07:35
ORD
-
SYD
44h 46m
2 stops
Qantas Airways Logo
09:10 - 14:16
SYD
-
ORD
20h 06m
1 stop
$1,556Qantas Airways
Mon, 16 Mar - Mon, 23 Mar
Qantas Airways Logo
14:58 - 08:20
ORD
-
MEL
49h 22m
2 stops
Qantas Airways Logo
12:00 - 17:46
MEL
-
ORD
21h 46m
1 stop
$1,572Qantas Airways
Sat, 11 Apr - Sat, 18 Apr
Air New Zealand Logo
20:03 - 16:00
ORD
-
PER
54h 57m
2 stops
Air New Zealand Logo
23:50 - 00:45
PER
-
ORD
37h 55m
2 stops
$2,087Air New Zealand
Sat, 11 Apr - Sat, 18 Apr
Air New Zealand Logo
21:20 - 16:00
ORD
-
PER
53h 40m
2 stops
Air New Zealand Logo
23:50 - 23:28
PER
-
ORD
36h 38m
2 stops
$2,089Air New Zealand
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 March, when tickets cost $1,202 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,239 and $2,097 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 the flight from Chicago O'Hare Intl Airport to Australia, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$598
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 15% 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 999 reviews
7.4Comfort
7.7Boarding
7.0Food
8.1Crew
7.2Entertainment
Airline reviews

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

10.0 ExcellentFernando, Feb 2026
PER - BNE
Read more Qantas Airways reviews

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

Qantas is always subpar beyond comfy chairs for a domestic flight

I liked boarding the plane. The staff were rude, the food was appalling and the chairs the most uncomfortable I have ever experienced

an hour late, then had to disembark on back stairs and take 4 flights up to get to main airport. No warning, and difficulty for those with canes and poor knees.

Well my expórtenle with Qantas it wasn’t that good KLM from Bs Aires was delay Santiago Chile Qantas QF 028 was still in the airport but the crew didn’t opened the door for me soo I lost my fly And I stuck in the airport 13 hrs waiting for next fly by Latam Arline My question is can I have my money back for business class

It was ok, the additional baggage charges were a bit excessive given winter is a time for skiing. To have to pay $600 extra for skis was tantamount to robbery. Airlines should consider sporting goods as baggage. Likewise, they should consider increasing the number of bags allowed on international flights to known ski destinations.

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+.

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)