$789 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 31/3. 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

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 20% 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
Sydney1 stop$1,282
Brisbane
Brisbane2 stops$1,392
Perth
Perth2 stops$1,960
Adelaide
Adelaide2 stops$1,600
Cairns
Cairns2 stops$2,041
Canberra
Canberra2 stops$2,035
Sydney
Sydney1 stop$1,282
Brisbane
Brisbane2 stops$1,392
Perth
Perth2 stops$1,960
Adelaide
Adelaide2 stops$1,600
Cairns
Cairns2 stops$2,041
Canberra
Canberra2 stops$2,035

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

Wed, 11 Feb - Wed, 4 Mar
Qantas Airways Logo
08:50 - 09:00
ORD
-
SYD
31h 10m1 stop
Qantas Airways Logo
07:05 - 16:38
SYD
-
ORD
26h 33m2 stops
$1,282Qantas Airways
Wed, 11 Feb - Wed, 4 Mar
Qantas Airways Logo
15:10 - 09:00
ORD
-
SYD
24h 50m1 stop
Qantas Airways Logo
07:05 - 16:38
SYD
-
ORD
26h 33m2 stops
$1,285Qantas Airways
Mon, 9 Feb - Mon, 2 Mar
Qantas Airways Logo
14:15 - 09:00
ORD
-
SYD
25h 45m1 stop
Qantas Airways Logo
19:15 - 16:38
SYD
-
ORD
38h 23m2 stops
$1,318Qantas Airways
Tue, 20 Jan - Tue, 27 Jan
Air Canada Logo
08:45 - 08:45
ORD
-
BNE
32h 00m2 stops
Air Canada Logo
10:45 - 17:08
BNE
-
ORD
46h 23m2 stops
$1,425Air Canada
Tue, 7 Apr - Tue, 14 Apr
Air Canada Logo
08:42 - 07:05
ORD
-
BNE
31h 23m2 stops
Air Canada Logo
10:00 - 17:01
BNE
-
ORD
46h 01m2 stops
$1,427Air Canada
Sat, 7 Feb - Sat, 14 Feb
Multiple Airlines Logo
15:35 - 14:05
ORD
-
ADL
30h 00m2 stops
Multiple Airlines Logo
06:00 - 14:41
ADL
-
ORD
25h 11m2 stops
$1,600Multiple Airlines
Sat, 7 Feb - Sat, 14 Feb
Multiple Airlines Logo
15:35 - 14:05
ORD
-
ADL
30h 00m2 stops
Multiple Airlines Logo
06:00 - 19:45
ADL
-
ORD
30h 15m3 stops
$1,610Multiple Airlines
Sun, 8 Feb - Sun, 15 Feb
Air New Zealand Logo
09:01 - 12:15
ORD
-
CBR
34h 14m3 stops
Air New Zealand Logo
09:30 - 23:26
CBR
-
ORD
30h 56m3 stops
$2,257Air New Zealand
Sat, 7 Feb - Sat, 14 Feb
Air New Zealand Logo
10:41 - 09:45
ORD
-
OOL
31h 04m2 stops
Air New Zealand Logo
08:20 - 20:28
OOL
-
ORD
28h 08m3 stops
$2,364Air New Zealand
Sun, 22 Mar - Sun, 29 Mar
United Airlines Logo
18:20 - 12:10
ORD
-
HBA
25h 50m2 stops
United Airlines Logo
06:05 - 23:29
HBA
-
ORD
33h 24m2 stops
$2,578United Airlines
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 $1,267 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,358 and $2,102 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 24% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$789
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 17% 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 $1,758 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 $2,417.

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 953 reviews
7.5Comfort
7.2Entertainment
7.7Boarding
8.2Crew
7.0Food
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)