$690 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 9/9. 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

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Best Australia Flight Deals from O'Hare Intl

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney1 stop$1,341
Brisbane
Brisbane2 stops$1,578
Perth
Perth2 stops$1,577
Adelaide
Adelaide2 stops$1,740
Cairns
Cairns2 stops$1,942
Canberra
Canberra2 stops$1,824
Sydney
Sydney1 stop$1,341
Brisbane
Brisbane2 stops$1,578
Perth
Perth2 stops$1,577
Adelaide
Adelaide2 stops$1,740
Cairns
Cairns2 stops$1,942
Canberra
Canberra2 stops$1,824

Cheap Flights from O'Hare Intl to Australia

 
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, 19 Aug - Tue, 26 Aug
American Airlines Logo
11:45 - 07:05ORD-SYD
28h 20m1 stop
American Airlines Logo
09:10 - 18:36SYD-ORD
24h 26m1 stop
$1,341American Airlines
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Tue, 19 Aug - Tue, 26 Aug
American Airlines Logo
11:45 - 07:05ORD-SYD
28h 20m1 stop
American Airlines Logo
09:10 - 15:47SYD-ORD
21h 37m2 stops
$1,347American Airlines
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Wed, 20 Aug - Wed, 27 Aug
 Logo
07:05 - 11:45ORD-SYD
37h 40m2 stops
 Logo
13:15 - 05:40SYD-ORD
31h 25m2 stops
$1,367
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Wed, 20 Aug - Wed, 27 Aug
 Logo
07:05 - 11:45ORD-SYD
37h 40m2 stops
 Logo
13:15 - 05:40SYD-ORD
31h 25m2 stops
$1,482
Find Deal
Mon, 3 Nov - Mon, 17 Nov
ANA Logo
16:25 - 10:30ORD-SYD
25h 05m1 stop
ANA Logo
21:45 - 07:20SYD-ORD
26h 35m1 stop
$1,731ANA
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Sun, 31 Aug - Sun, 14 Sep
ANA Logo
20:20 - 19:15ORD-SYD
31h 55m2 stops
ANA Logo
11:50 - 08:40SYD-ORD
35h 50m1 stop
$1,737ANA
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Mon, 17 Nov - Wed, 3 Dec
Qantas Airways Logo
13:23 - 09:30ORD-MEL
27h 07m1 stop
Qantas Airways Logo
12:00 - 23:59MEL-ORD
28h 59m1 stop
$1,955Qantas Airways
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Sat, 22 Nov - Wed, 3 Dec
Qantas Airways Logo
16:02 - 05:00ORD-MEL
43h 58m1 stop
Qantas Airways Logo
12:00 - 16:00MEL-ORD
21h 00m1 stop
$1,967Qantas Airways
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Tue, 16 Sep - Mon, 29 Sep
Air Canada Logo
15:40 - 18:30ORD-CBR
35h 50m2 stops
Air Canada Logo
06:20 - 15:00CBR-ORD
23h 40m2 stops
$2,188Air Canada
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Tue, 16 Sep - Mon, 29 Sep
Air Canada Logo
15:40 - 18:30ORD-CBR
35h 50m2 stops
Air Canada Logo
19:05 - 19:29CBR-ORD
39h 24m3 stops
$2,205Air Canada
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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 $1,306 (return) on average. On the other hand, the most expensive months are December and October, when the average cost of return tickets is $2,206 and $2,099 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 the flight from Chicago O'Hare Intl Airport to Australia, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.


Good to know

Low seasonSeptember
High seasonMay
Cheapest flight$690
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 23% 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 $1,180 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 876 reviews
6.9Food
7.2Entertainment
8.2Crew
7.4Comfort
7.7Boarding
Airline reviews

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

10.0 ExcellentDavid, June 2025BME - PER
Read more Qantas Airways reviews

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?

Loved the staff. The economy seats could have been bigger.

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

Overall good experience with flight and airport wheelchair staff. Also got Indian food in the flights

I liked the service, the menu, and the comfort of the seats! Even tho we were seated by the bathrooms, the reclining seats and movie selection was very good, my husband and I didn’t mind at all

Very good as always, stand out airline. The passengers whom choose to stuff baggage that otherwise should be checked-in is a real bother but that's not the airlines doing. A real frustration that passengers just don't want to check-in luggage. This is a pet hate unfortunately.

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

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.

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

United had no (zero) record of our flight. It took over an hour of us standing in line with surly employee while others waited to get resolved. I have never experienced such poor service and poor empathy.

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

Aircraft had technical issues. After 3 hours of trying to resolve, flight was cancelled. Was booked on a flight leaving 12 hours after intended departure. Now on 4 flights instead of 2 and a day late to my destination.

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.

I am very tall. All airline seats are a bit uncomfortable.

Bad experience boarding and flight got delayed didn’t make it to my next flight

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.

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

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