$713 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 22/9. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Australia

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

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$1,551
Brisbane
Brisbane2 stops$1,812
Perth
Perth2 stops$1,629
Adelaide
Adelaide2 stops$1,769
Cairns
Cairns2 stops$1,890
Canberra
Canberra2 stops$2,401
Sydney
Sydney2 stops$1,551
Brisbane
Brisbane2 stops$1,812
Perth
Perth2 stops$1,629
Adelaide
Adelaide2 stops$1,769
Cairns
Cairns2 stops$1,890
Canberra
Canberra2 stops$2,401

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, 29 Sep - Mon, 6 Oct
 Logo
06:30 - 11:45ORD-SYD
38h 15m2 stops
 Logo
14:15 - 22:43SYD-ORD
24h 28m2 stops
$1,551
Find Deal
Sun, 26 Oct - Mon, 3 Nov
 Logo
05:05 - 09:00ORD-SYD
35h 55m2 stops
 Logo
14:05 - 00:11SYD-ORD
27h 06m2 stops
$1,624
Find Deal
Tue, 24 Feb - Tue, 10 Mar
Fiji Airways Logo
16:45 - 21:50ORD-SYD
36h 05m2 stops
Fiji Airways Logo
06:00 - 21:07SYD-ORD
31h 07m2 stops
$1,626Fiji Airways
Find Deal
Sat, 28 Feb - Fri, 6 Mar
Fiji Airways Logo
16:45 - 12:30ORD-SYD
26h 45m2 stops
Fiji Airways Logo
14:10 - 23:57SYD-ORD
26h 47m2 stops
$1,733Fiji Airways
Find Deal
Mon, 9 Feb - Sun, 22 Feb
ANA Logo
16:25 - 20:15ORD-SYD
34h 50m1 stop
ANA Logo
12:25 - 05:03SYD-ORD
33h 38m2 stops
$1,772ANA
Find Deal
Mon, 10 Nov - Sun, 23 Nov
ANA Logo
16:25 - 20:15ORD-SYD
34h 50m1 stop
ANA Logo
21:45 - 13:50SYD-ORD
33h 05m1 stop
$1,774ANA
Find Deal
Mon, 16 Feb - Sun, 1 Mar
Air Canada Logo
15:40 - 15:15ORD-MEL
30h 35m2 stops
Air Canada Logo
07:10 - 14:41MEL-ORD
24h 31m2 stops
$2,003Air Canada
Find Deal
Sun, 25 Jan - Fri, 30 Jan
Air Canada Logo
15:40 - 15:35ORD-MEL
30h 55m2 stops
Air Canada Logo
08:00 - 16:38MEL-ORD
25h 38m2 stops
$2,021Air Canada
Find Deal
Mon, 26 Jan - Sun, 8 Feb
Qantas Airways Logo
08:40 - 09:30ORD-MEL
31h 50m1 stop
Qantas Airways Logo
12:00 - 15:59MEL-ORD
20h 59m1 stop
$2,065Qantas Airways
Find Deal
Tue, 10 Feb - Tue, 3 Mar
Qantas Airways Logo
14:14 - 05:00ORD-BNE
22h 46m1 stop
Qantas Airways Logo
19:40 - 23:57BNE-ORD
20h 17m1 stop
$2,097Qantas Airways
Find Deal
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 $1,307 (return) on average. On the other hand, the most expensive months are December and October, when the average cost of return tickets is $2,131 and $2,096 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 30% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$713
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Chicago to Perth

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 $1,180 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 $1,621.

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 904 reviews
7.2Entertainment
6.9Food
8.2Crew
7.7Boarding
7.5Comfort
Airline reviews

A few more inches of legroom is all i ask

8.0 ExcellentTerry, Aug 2025CNS - SYD
Read more Qantas Airways reviews

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 !

The wifi was out. Otherwise it was great flight. Richard, as CSM, was excellent.

Was bumped to a later flight because of inefficiency on part of the airline.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

My flight from New York to Canada and Canada to Brisbane was canceled, so I had to take united airlines instead flight from New York to Dubai then layover in Dubai 8 hours then from Dubai to Brisbane it was extremely difficult for me , it was a nightmare flying with Canadian airlines unfortunately.

I found the boarding easy and my seat was very comfortable as I had a lot of leg room. I am not too happy that I no longer have lounge access even though I used to get it with my TD credit card.

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

Real smooth and easy, Real good leg room in coach!

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Very bad, flight was cancelled due to strike and staff was unable to rebook us

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

Terrible confusion btw air Canada and United. Wasn’t able to change ticket because I had purchased on kayak. Rethinking booking tickets on this site, and will try to avoid United and aircanada going forward.

Conflicting information provided about baggage allowance. One screen said I had a carry on and another said I didnt.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.