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Cheap flights from Chicago O'Hare Intl Airport to Australia from $734

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 15/9. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to Australia

Cheap return flights

Air Canada Logo
10:40 - 07:20ORD-SYD
29h 40m2 stops
Air Canada Logo
09:20 - 15:00SYD-ORD
20h 40m1 stop
$1,288Air Canada
Find Deal
Tue, 19 Aug - Wed, 24 Sep
Air Canada Logo
07:15 - 09:35ORD-SYD
33h 20m2 stops
Air Canada Logo
11:20 - 14:41SYD-ORD
20h 21m1 stop
$1,289Air Canada
Find Deal
Sun, 2 Nov - Wed, 12 Nov
Air Canada Logo
08:45 - 09:35ORD-SYD
31h 50m2 stops
Air Canada Logo
11:20 - 08:05SYD-ORD
37h 45m2 stops
$1,294Air Canada
Find Deal
Tue, 18 Nov - Tue, 24 Feb
Logo
06:20 - 10:25ORD-BNE
37h 05m2 stops
Logo
11:35 - 22:59BNE-ORD
26h 24m2 stops
$1,470
Find Deal
Sat, 18 Oct - Fri, 31 Oct
Logo
06:20 - 12:45ORD-SYD
38h 25m2 stops
Logo
14:00 - 23:59SYD-ORD
25h 59m2 stops
$1,486
Find Deal
Mon, 20 Oct - Sun, 2 Nov
ANA Logo
16:25 - 10:30ORD-SYD
25h 05m1 stop
ANA Logo
21:45 - 07:20SYD-ORD
26h 35m1 stop
$1,776ANA
Find Deal
Mon, 24 Nov - Sun, 7 Dec
Air New Zealand Logo
08:48 - 10:55ORD-MEL
33h 07m2 stops
Air New Zealand Logo
12:10 - 21:16MEL-ORD
26h 06m2 stops
$1,903Air New Zealand
Find Deal
Tue, 25 Nov - Sun, 14 Dec
Air New Zealand Logo
16:40 - 10:50ORD-MEL
26h 10m2 stops
Air New Zealand Logo
12:10 - 19:56MEL-ORD
24h 46m2 stops
$1,944Air New Zealand
Find Deal
Wed, 22 Oct - Wed, 12 Nov
Qantas Airways Logo
16:45 - 06:30ORD-BNE
21h 45m1 stop
Qantas Airways Logo
19:25 - 23:59BNE-ORD
20h 34m1 stop
$2,187Qantas Airways
Find Deal
Tue, 25 Nov - Wed, 3 Dec
Qantas Airways Logo
14:54 - 06:30ORD-BNE
23h 36m1 stop
Qantas Airways Logo
11:30 - 23:59BNE-ORD
28h 29m1 stop
$2,270Qantas Airways
Find Deal
Sat, 29 Nov - Sun, 7 Dec

Air Canada flights from Chicago O'Hare Intl Airport to Australia

Our best Air Canada deals on Chicago O'Hare Intl Airport to Australia flight tickets
Air Canada
19 Aug
ORD10:40Chicago O'Hare Intl
29h 40m
2 stops
SYD07:20Sydney Kingsford Smith
24 Sept
SYD09:20Sydney Kingsford Smith
20h 40m
1 stop
ORD15:00Chicago O'Hare Intl
$1,288
Find similar
Air Canada
2 Nov
ORD07:15Chicago O'Hare Intl
33h 20m
2 stops
SYD09:35Sydney Kingsford Smith
12 Nov
SYD11:20Sydney Kingsford Smith
20h 21m
1 stop
ORD14:41Chicago O'Hare Intl
$1,289
Find similar
Air Canada
18 Nov
ORD08:45Chicago O'Hare Intl
31h 50m
2 stops
SYD09:35Sydney Kingsford Smith
24 Feb
SYD11:20Sydney Kingsford Smith
37h 45m
2 stops
ORD08:05Chicago O'Hare Intl
$1,294
Find similar

ANA flights from Chicago O'Hare Intl Airport to Australia

Our best ANA deals on Chicago O'Hare Intl Airport to Australia flight tickets
ANA
24 Nov
ORD16:25Chicago O'Hare Intl
25h 05m
1 stop
SYD10:30Sydney Kingsford Smith
7 Dec
SYD21:45Sydney Kingsford Smith
26h 35m
1 stop
ORD07:20Chicago O'Hare Intl
$1,776
Find similar
ANA
6 Aug
ORD17:45Chicago O'Hare Intl
34h 30m
1 stop
SYD19:15Sydney Kingsford Smith
27 Aug
SYD11:50Sydney Kingsford Smith
32h 11m
2 stops
ORD05:01Chicago O'Hare Intl
$2,695
Find similar

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 5 August 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

Tue 19/8

10:40-07:20

2 stops29h 40m

Sydney Kingsford Smith

Wed 24/9

09:20-15:00

1 stop20h 40m

$1,288

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 2/11

07:15-09:35

2 stops33h 20m

Sydney Kingsford Smith

Wed 12/11

11:20-14:41

1 stop20h 21m

$1,289

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 18/11

08:45-09:35

2 stops31h 50m

Sydney Kingsford Smith

Tue 24/2

11:20-08:05

2 stops37h 45m

$1,294

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 18/10

06:20-10:25

2 stops37h 05m

Brisbane

Fri 31/10

11:35-22:59

2 stops26h 24m

$1,470

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 20/10

06:20-12:45

2 stops38h 25m

Sydney Kingsford Smith

Sun 2/11

14:00-23:59

2 stops25h 59m

$1,486

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 24/11

16:25-10:30

1 stop25h 05m

Sydney Kingsford Smith

Sun 7/12

21:45-07:20

1 stop26h 35m

$1,776

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 25/11

08:48-10:55

2 stops33h 07m

Melbourne

Sun 14/12

12:10-21:16

2 stops26h 06m

$1,903

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 22/10

16:40-10:50

2 stops26h 10m

Melbourne

Wed 12/11

12:10-19:56

2 stops24h 46m

$1,944

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 25/11

16:45-06:30

1 stop21h 45m

Brisbane

Wed 3/12

19:25-23:59

1 stop20h 34m

$2,187

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 29/11

14:54-06:30

1 stop23h 36m

Brisbane

Sun 7/12

11:30-23:59

1 stop28h 29m

$2,270

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 $1,323. 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 $1,345.

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 $1,421. 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 $3,797. 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 $1,822. 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 $2,503. 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 $1,702 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 $1,407 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

Best price found

$734

Fastest flight time

20h 24m

Direct flights

None

Airports in Australia

7 airports
The best one-way flight to Australia from Chicago O'Hare Intl Airport in the past 72 hours is $734. The best return flight deal from Chicago O'Hare Intl Airport to Australia found on momondo in the last 72 hours is $1,288.
The fastest flight from Chicago O'Hare Intl Airport to Australia takes 20h 24m
There are no direct flights from Chicago O'Hare Intl Airport to Australia. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Perth Airport, Chicago O'Hare Intl Airport - Sydney Kingsford Smith Airport and Chicago O'Hare Intl Airport - Brisbane Airport.
There are 7 airports near Australia: Melbourne Avalon (AVV), Canberra (CBR), Melbourne (MEL), Brisbane (BNE), Adelaide (ADL), Perth (PER), Sydney Kingsford Smith (SYD)
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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
Qantas AirwaysPriceFrom $1,318Free cancellationRating
7.5
887 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $1,687Free cancellationRating
7.1
9,879 reviews
Search Air Canada 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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