$630 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 26/2. 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$1,443
Brisbane
Brisbane2 stops$1,445
Perth
Perth2 stops$2,069
Adelaide
Adelaide2 stops$1,506
Cairns
Cairns2 stops$2,385
Canberra
Canberra2 stops$2,031
Sydney
Sydney1 stop$1,443
Brisbane
Brisbane2 stops$1,445
Perth
Perth2 stops$2,069
Adelaide
Adelaide2 stops$1,506
Cairns
Cairns2 stops$2,385
Canberra
Canberra2 stops$2,031

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, 17 Feb - Tue, 3 Mar
Qantas Airways Logo
16:30 - 09:30
ORD
-
MEL
24h 00m1 stop
Qantas Airways Logo
06:45 - 16:38
MEL
-
ORD
26h 53m2 stops
$1,431Qantas Airways
Wed, 21 Jan - Wed, 4 Feb
Qantas Airways Logo
18:40 - 09:00
ORD
-
SYD
21h 20m1 stop
Qantas Airways Logo
07:05 - 14:57
SYD
-
ORD
24h 52m2 stops
$1,443Qantas Airways
Tue, 10 Feb - Tue, 3 Mar
Air Canada Logo
15:35 - 09:35
ORD
-
SYD
25h 00m1 stop
Air Canada Logo
11:20 - 14:41
SYD
-
ORD
20h 21m1 stop
$1,445Air Canada
Wed, 28 Jan - Sun, 8 Feb
Air Canada Logo
08:45 - 08:45
ORD
-
BNE
32h 00m2 stops
Air Canada Logo
10:45 - 14:41
BNE
-
ORD
19h 56m1 stop
$1,445Air Canada
Mon, 23 Mar - Mon, 20 Apr
Multiple Airlines Logo
15:35 - 13:15
ORD
-
MEL
29h 40m2 stops
Multiple Airlines Logo
06:00 - 19:58
MEL
-
ORD
28h 58m2 stops
$1,491Multiple Airlines
Mon, 9 Feb - Sun, 15 Feb
Multiple Airlines Logo
15:35 - 13:35
ORD
-
MEL
29h 00m2 stops
Multiple Airlines Logo
08:00 - 14:41
MEL
-
ORD
23h 41m2 stops
$1,497Multiple Airlines
Sat, 17 Jan - Sat, 24 Jan
United Airlines Logo
10:41 - 09:30
ORD
-
ADL
30h 19m2 stops
United Airlines Logo
14:55 - 21:32
ADL
-
ORD
23h 07m1 stop
$2,102United Airlines
Thu, 19 Feb - Tue, 24 Feb
Air New Zealand Logo
20:10 - 11:00
ORD
-
HBA
45h 50m2 stops
Air New Zealand Logo
12:20 - 06:14
HBA
-
ORD
34h 54m2 stops
$2,236Air New Zealand
Fri, 16 Jan - Fri, 23 Jan
United Airlines Logo
16:16 - 08:40
ORD
-
OOL
24h 24m2 stops
United Airlines Logo
07:20 - 20:05
OOL
-
ORD
28h 45m2 stops
$2,559United Airlines
Tue, 27 Jan - Sun, 1 Feb
Air New Zealand Logo
18:29 - 16:45
ORD
-
CBR
29h 16m3 stops
Air New Zealand Logo
18:25 - 18:48
CBR
-
ORD
41h 23m3 stops
$2,615Air 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 $1,298 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,286 and $2,090 respectively.

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to Australia?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Australia clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Australia on a Friday and more expensive on a Thursday. On your return trip to Chicago O'Hare Airport, you should consider flying back on a Monday, and avoid Sundays for better deals.

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 40% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$630
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 12% 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.

  • 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 retur flights cost $1,790 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 $2,461.

Reviews of the top airlines 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 947 reviews
7.0Food
7.5Comfort
8.1Crew
7.2Entertainment
7.7Boarding
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 !

We loved the steward on the plane. He made the night enjoyable

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

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

Information on your arrival and departure airports