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Cheap flights from Chicago O'Hare Intl Airport to Australia from $620

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 9/4. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
19:21 - 06:45
ORD
-
MEL
44h 24m
1 stop
Multiple Airlines Logo
13:30 - 05:50
MEL
-
ORD
31h 20m
2 stops
$1,312Multiple Airlines
Mon, 20 Apr - Mon, 11 May
Qantas Airways Logo
16:45 - 09:00
ORD
-
SYD
23h 15m
1 stop
Qantas Airways Logo
07:05 - 16:37
SYD
-
ORD
26h 32m
2 stops
$1,341Qantas Airways
Wed, 18 Feb - Wed, 25 Feb
Multiple Airlines Logo
21:20 - 07:30
ORD
-
SYD
43h 10m
1 stop
Multiple Airlines Logo
13:15 - 05:50
SYD
-
ORD
31h 35m
2 stops
$1,348Multiple Airlines
Fri, 17 Apr - Thu, 7 May
Multiple Airlines Logo
06:00 - 07:30
ORD
-
SYD
34h 30m
1 stop
Multiple Airlines Logo
13:15 - 05:50
SYD
-
ORD
31h 35m
2 stops
$1,351Multiple Airlines
Sun, 19 Apr - Sun, 26 Apr
Multiple Airlines Logo
19:29 - 07:30
ORD
-
SYD
44h 01m
1 stop
Multiple Airlines Logo
13:15 - 05:39
SYD
-
ORD
31h 24m
2 stops
$1,354Multiple Airlines
Tue, 31 Mar - Mon, 13 Apr
Multiple Airlines Logo
19:45 - 07:30
ORD
-
SYD
43h 45m
1 stop
Multiple Airlines Logo
13:15 - 05:50
SYD
-
ORD
31h 35m
2 stops
$1,358Multiple Airlines
Wed, 1 Apr - Wed, 15 Apr
Qantas Airways Logo
16:49 - 17:15
ORD
-
MEL
32h 26m
2 stops
Qantas Airways Logo
09:45 - 21:21
MEL
-
ORD
26h 36m
1 stop
$1,359Qantas Airways
Thu, 19 Mar - Fri, 10 Apr
Air Canada Logo
15:35 - 08:45
ORD
-
BNE
25h 10m
1 stop
Air Canada Logo
09:45 - 14:41
BNE
-
ORD
19h 56m
1 stop
$1,372Air Canada
Tue, 24 Feb - Wed, 11 Mar
Air Canada Logo
11:05 - 07:05
ORD
-
BNE
29h 00m
2 stops
Air Canada Logo
10:00 - 20:01
BNE
-
ORD
25h 01m
2 stops
$1,378Air Canada
Sun, 21 Jun - Wed, 8 Jul
Cathay Pacific Logo
12:20 - 22:55
ORD
-
PER
45h 35m
2 stops
Cathay Pacific Logo
00:10 - 13:55
PER
-
ORD
26h 45m
1 stop
$2,280Cathay Pacific
Tue, 24 Mar - Mon, 30 Mar

Qantas Airways flights from Chicago O'Hare Intl Airport to Australia

Our best Qantas Airways deals on Chicago O'Hare Intl Airport to Australia flight tickets
Qantas Airways
18 Feb
ORD16:45Chicago O'Hare Intl
23h 15m
1 stop
SYD09:00Sydney Kingsford Smith
25 Feb
SYD07:05Sydney Kingsford Smith
26h 32m
2 stops
ORD16:37Chicago O'Hare Intl
$1,341
Qantas Airways
14 Feb
ORD20:50Chicago O'Hare Intl
40h 20m
1 stop
SYD06:10Sydney Kingsford Smith
25 Feb
SYD07:05Sydney Kingsford Smith
24h 48m
2 stops
ORD14:53Chicago O'Hare Intl
$1,356
Qantas Airways
19 Mar
ORD16:49Chicago O'Hare Intl
32h 26m
2 stops
MEL17:15Melbourne
10 Apr
MEL09:45Melbourne
26h 36m
1 stop
ORD21:21Chicago O'Hare Intl
$1,359

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
5 Mar
ORD15:35Chicago O'Hare Intl
25h 10m
1 stop
BNE08:45Brisbane
13 Mar
BNE09:45Brisbane
19h 56m
1 stop
ORD14:41Chicago O'Hare Intl
$1,429
ANA
6 Apr
ORD17:45Chicago O'Hare Intl
34h 30m
1 stop
SYD19:15Sydney Kingsford Smith
6 May
SYD20:55Sydney Kingsford Smith
26h 45m
1 stop
ORD08:40Chicago O'Hare Intl
$1,674

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 9 February 2026.
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

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 20/4

19:21-06:45

1 stop44h 24m

Melbourne

Mon 11/5

13:30-05:50

2 stops31h 20m

$1,312

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 18/2

16:45-09:00

1 stop23h 15m

Sydney Kingsford Smith

Wed 25/2

07:05-16:37

2 stops26h 32m

$1,341

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 17/4

21:20-07:30

1 stop43h 10m

Sydney Kingsford Smith

Thu 7/5

13:15-05:50

2 stops31h 35m

$1,348

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 19/4

06:00-07:30

1 stop34h 30m

Sydney Kingsford Smith

Sun 26/4

13:15-05:50

2 stops31h 35m

$1,351

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 31/3

19:29-07:30

1 stop44h 01m

Sydney Kingsford Smith

Mon 13/4

13:15-05:39

2 stops31h 24m

$1,354

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 1/4

19:45-07:30

1 stop43h 45m

Sydney Kingsford Smith

Wed 15/4

13:15-05:50

2 stops31h 35m

$1,358

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 19/3

16:49-17:15

2 stops32h 26m

Melbourne

Fri 10/4

09:45-21:21

1 stop26h 36m

$1,359

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 24/2

15:35-08:45

1 stop25h 10m

Brisbane

Wed 11/3

09:45-14:41

1 stop19h 56m

$1,372

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 21/6

11:05-07:05

2 stops29h 00m

Brisbane

Wed 8/7

10:00-20:01

2 stops25h 01m

$1,378

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 24/3

12:20-22:55

2 stops45h 35m

Perth

Mon 30/3

00:10-13:55

1 stop26h 45m

$2,280

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 $1,204. If you don’t want to visit Australia in March, then you should wait until August to fly from Chicago O'Hare Intl Airport, when ticket prices are also cheap, with an average price of $1,553.

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 $1,802 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 $1,499 on momondo.

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

You could potentially save up to 19% 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

Fastest flight time

21h 10m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Australia takes 21h 10m
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.
Search flight deals

  • 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 $1,216Free cancellationRating
7.5
988 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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