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Cheap flights from Chicago O'Hare Intl Airport to Australia from $764

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Australia departing on 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Multiple Airlines Logo
06:00 - 07:00ORD-SYD
32h 00m2 stops
Multiple Airlines Logo
11:50 - 23:29SYD-ORD
28h 39m2 stops
$1,520Multiple Airlines
Find Deal
Sat, 8 Nov - Sat, 15 Nov
Multiple Airlines Logo
06:30 - 10:20ORD-BNE
35h 50m2 stops
Multiple Airlines Logo
11:20 - 23:00BNE-ORD
27h 40m2 stops
$1,588Multiple Airlines
Find Deal
Fri, 7 Nov - Fri, 14 Nov
Fiji Airways Logo
16:45 - 21:50ORD-SYD
36h 05m2 stops
Fiji Airways Logo
06:00 - 19:18SYD-ORD
30h 18m2 stops
$1,705Fiji Airways
Find Deal
Tue, 24 Feb - Sat, 7 Mar
Fiji Airways Logo
16:45 - 12:30ORD-SYD
26h 45m2 stops
Fiji Airways Logo
14:10 - 21:07SYD-ORD
22h 57m2 stops
$1,708Fiji Airways
Find Deal
Tue, 24 Feb - Tue, 10 Mar
Hawaiian Airlines Logo
14:00 - 19:45ORD-SYD
36h 45m2 stops
Hawaiian Airlines Logo
21:40 - 13:04SYD-ORD
32h 24m2 stops
$1,719Hawaiian Airlines
Find Deal
Tue, 17 Feb - Fri, 27 Feb
Hawaiian Airlines Logo
14:00 - 19:45ORD-SYD
36h 45m2 stops
Hawaiian Airlines Logo
21:40 - 13:04SYD-ORD
32h 24m2 stops
$1,738Hawaiian Airlines
Find Deal
Mon, 12 Jan - Mon, 26 Jan
Air Canada Logo
15:40 - 13:35ORD-MEL
28h 55m2 stops
Air Canada Logo
07:10 - 14:41MEL-ORD
24h 31m2 stops
$1,990Air Canada
Find Deal
Mon, 2 Feb - Sun, 15 Feb
Air Canada Logo
15:40 - 14:15ORD-MEL
29h 35m2 stops
Air Canada Logo
07:00 - 19:30MEL-ORD
29h 30m3 stops
$2,007Air Canada
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Mon, 2 Feb - Sun, 15 Feb
Qantas Airways Logo
18:23 - 09:30ORD-MEL
22h 07m1 stop
Qantas Airways Logo
06:45 - 17:52MEL-ORD
28h 07m2 stops
$2,037Qantas Airways
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Mon, 1 Dec - Tue, 9 Dec
Qantas Airways Logo
18:17 - 15:35ORD-MEL
28h 18m2 stops
Qantas Airways Logo
12:00 - 15:59MEL-ORD
20h 59m1 stop
$2,040Qantas Airways
Find Deal
Thu, 4 Dec - Wed, 14 Jan

Hawaiian Airlines flights from Chicago O'Hare Intl Airport to Australia

Our best Hawaiian Airlines deals on Chicago O'Hare Intl Airport to Australia flight tickets
Hawaiian Airlines
17 Feb
ORD14:00Chicago O'Hare Intl
36h 45m
2 stops
SYD19:45Sydney Kingsford Smith
27 Feb
SYD21:40Sydney Kingsford Smith
32h 24m
2 stops
ORD13:04Chicago O'Hare Intl
$1,719
Find similar
Hawaiian Airlines
12 Jan
ORD14:00Chicago O'Hare Intl
36h 45m
2 stops
SYD19:45Sydney Kingsford Smith
26 Jan
SYD21:40Sydney Kingsford Smith
32h 24m
2 stops
ORD13:04Chicago O'Hare Intl
$1,738
Find similar
Hawaiian Airlines
14 Jan
ORD14:00Chicago O'Hare Intl
36h 45m
2 stops
SYD19:45Sydney Kingsford Smith
21 Jan
SYD21:40Sydney Kingsford Smith
32h 24m
2 stops
ORD13:04Chicago O'Hare Intl
$1,755
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Fiji Airways flights from Chicago O'Hare Intl Airport to Australia

Our best Fiji Airways deals on Chicago O'Hare Intl Airport to Australia flight tickets
Fiji Airways
24 Feb
ORD16:45Chicago O'Hare Intl
36h 05m
2 stops
SYD21:50Sydney Kingsford Smith
7 Mar
SYD06:00Sydney Kingsford Smith
30h 18m
2 stops
ORD19:18Chicago O'Hare Intl
$1,705
Find similar
Fiji Airways
24 Feb
ORD16:45Chicago O'Hare Intl
26h 45m
2 stops
SYD12:30Sydney Kingsford Smith
10 Mar
SYD14:10Sydney Kingsford Smith
22h 57m
2 stops
ORD21:07Chicago O'Hare Intl
$1,708
Find similar
Fiji Airways
11 Feb
ORD17:40Chicago O'Hare Intl
25h 50m
2 stops
SYD12:30Sydney Kingsford Smith
28 Feb
SYD06:00Sydney Kingsford Smith
30h 18m
2 stops
ORD19:18Chicago O'Hare Intl
$1,779
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momondo Fare Finder

 
Customise your flight search to find flights from Chicago O'Hare Intl Airport to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 24 September 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 8/11

06:00-07:00

2 stops32h 00m

Sydney Kingsford Smith

Sat 15/11

11:50-23:29

2 stops28h 39m

$1,520

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Fri 7/11

06:30-10:20

2 stops35h 50m

Brisbane

Fri 14/11

11:20-23:00

2 stops27h 40m

$1,588

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 24/2

16:45-21:50

2 stops36h 05m

Sydney Kingsford Smith

Sat 7/3

06:00-19:18

2 stops30h 18m

$1,705

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 24/2

16:45-12:30

2 stops26h 45m

Sydney Kingsford Smith

Tue 10/3

14:10-21:07

2 stops22h 57m

$1,708

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 17/2

14:00-19:45

2 stops36h 45m

Sydney Kingsford Smith

Fri 27/2

21:40-13:04

2 stops32h 24m

$1,719

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 12/1

14:00-19:45

2 stops36h 45m

Sydney Kingsford Smith

Mon 26/1

21:40-13:04

2 stops32h 24m

$1,738

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/2

15:40-13:35

2 stops28h 55m

Melbourne

Sun 15/2

07:10-14:41

2 stops24h 31m

$1,990

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/2

15:40-14:15

2 stops29h 35m

Melbourne

Sun 15/2

07:00-19:30

3 stops29h 30m

$2,007

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 1/12

18:23-09:30

1 stop22h 07m

Melbourne

Tue 9/12

06:45-17:52

2 stops28h 07m

$2,037

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 4/12

18:17-15:35

2 stops28h 18m

Melbourne

Wed 14/1

12:00-15:59

1 stop20h 59m

$2,040

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Australia from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Australia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Australia?

In general, March is the cheapest month to fly from Chicago O'Hare Intl Airport to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,297. If you don’t want to visit Australia in March, then you should wait until May to fly from Chicago O'Hare Intl Airport, when ticket prices are also cheap, with an average price of $1,322.

What is the cheapest day to depart on your flight to Australia?

On average, the least expensive day to fly to Australia from Chicago O'Hare Intl Airport is on a Friday. momondo users have found tickets for Friday departures for as low as $1,395. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Chicago O'Hare Intl Airport to Australia on a Thursday will generally be more expensive and average around $3,727. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Australia?

According to our data, the cheapest time of day to fly to Australia is in the afternoon. momondo users have found flights departing from Chicago O'Hare Intl Airport to Australia in the afternoon for as low as $1,788. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the evening, with an average ticket price of $2,457. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Australia?

You are more likely to see cheaper flights to Australia from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,680 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Chicago O'Hare Intl Airport for as low as $1,302 on momondo.

Can stopping save me money on Chicago O'Hare Intl Airport to Australia flights?

You could potentially save up to 15% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Australia flight.

Cheap Chicago O'Hare Intl Airport to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Australia

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Australia. There are no popular flight routes from Chicago O'Hare Intl Airport to Australia.
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  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Australia?

    Prices for flights from Chicago O'Hare Intl Airport to Australia are updated daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Australia?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Australia?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Australia.

  • What documentation or ID do you need to fly to Australia?

    The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Chicago O'Hare Intl Airport to Australia

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Australia with momondo
Airline
Rating
Free cancellation
Price
Air CanadaPriceFrom $1,260Free cancellationRating
7.1
10,000 reviews
Search Air Canada flights
Qantas AirwaysPriceFrom $1,315Free cancellationRating
7.5
908 reviews
Search Qantas Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Australia?

It is quick and easy to find Chicago to Australia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Australia that suits you.

Can I find flights from Chicago to Australia with flexible booking policies on momondo?

momondo does allow users to show only those flights to Australia from Chicago which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Chicago to Australia?

Once you have performed a search for Chicago to Australia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chicago to Australia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Australia, momondo offers a useful price alert feature which will track prices for flights to Australia from Chicago and alert you when they change.

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