Find Cheap Flights from Chicago O'Hare International to Australia

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Chicago O'Hare International to Australia

(Round-trip)
Depart: Sat Oct 28 2017 Return: Thu Nov 16 2017 Trip spans 20 days
China Eastern
China Eastern
ORD
SYD
50h 40m
3 stops
SYD
ORD
41h 10m
3 stops
Depart: Fri Sep 22 2017 Return: Fri Oct 13 2017 Trip spans 22 days
Multiple Airlines
Multiple Airlines
ORD
PER
52h 50m
2 stops
PER
ORD
50h 55m
2 stops
Depart: Sat Dec 30 2017 Return: Tue Jan 9 2018 Trip spans 11 days
Hainan Airlines
Hainan Airlines
ORD
MEL
47h 45m
2 stops
MEL
ORD
68h 15m
2 stops
Depart: Tue Mar 27 2018 Return: Wed Apr 11 2018 Trip spans 16 days
EVA Air
EVA Air
ORD
BNE
42h 20m
1 stop
BNE
ORD
37h 30m
1 stop
Depart: Wed Oct 25 2017 Return: Wed Nov 15 2017 Trip spans 22 days
China Eastern
China Eastern
ORD
SYD
73h 50m
3 stops
SYD
ORD
64h 20m
3 stops
Depart: Sun Oct 29 2017 Return: Wed Nov 15 2017 Trip spans 18 days
China Eastern
China Eastern
ORD
SYD
74h 30m
3 stops
SYD
ORD
64h 20m
3 stops
Depart: Wed Nov 1 2017 Return: Wed Nov 29 2017 Trip spans 29 days
China Eastern
China Eastern
ORD
SYD
73h 50m
3 stops
SYD
ORD
64h 20m
3 stops
Depart: Fri Mar 9 2018 Return: Fri Mar 16 2018 Trip spans 7 days
Multiple Airlines
Multiple Airlines
ORD
PER
67h 20m
2 stops
PER
ORD
49h 30m
2 stops
Depart: Sun Nov 26 2017 Return: Thu Dec 14 2017 Trip spans 19 days
China Eastern
China Eastern
ORD
SYD
49h 50m
3 stops
SYD
ORD
41h 10m
3 stops
Depart: Sat Jan 6 2018 Return: Tue Jan 16 2018 Trip spans 11 days
Hainan Airlines
Hainan Airlines
ORD
MEL
47h 45m
2 stops
MEL
ORD
68h 15m
2 stops
Depart: Wed Mar 28 2018 Return: Wed Apr 11 2018 Trip spans 15 days
EVA Air
EVA Air
ORD
BNE
42h 20m
1 stop
BNE
ORD
37h 30m
1 stop
Depart: Sat Dec 2 2017 Return: Wed Dec 20 2017 Trip spans 19 days
China Eastern
China Eastern
ORD
SYD
50h 40m
3 stops
SYD
ORD
64h 20m
3 stops
Depart: Wed Nov 22 2017 Return: Sat Dec 2 2017 Trip spans 11 days
Multiple Airlines
Multiple Airlines
ORD
MEL
34h 00m
2 stops
MEL
ORD
40h 40m
1 stop
Depart: Wed Jan 10 2018 Return: Wed Jan 24 2018 Trip spans 15 days
EVA Air
EVA Air
ORD
BNE
42h 00m
1 stop
BNE
ORD
37h 00m
1 stop
Depart: Mon Oct 16 2017 Return: Wed Oct 25 2017 Trip spans 10 days
China Eastern
China Eastern
ORD
SYD
74h 25m
3 stops
SYD
ORD
64h 20m
3 stops
Depart: Tue Oct 31 2017 Return: Tue Nov 14 2017 Trip spans 15 days
Multiple Airlines
Multiple Airlines
ORD
SYD
54h 01m
2 stops
SYD
ORD
36h 51m
3 stops
Depart: Wed Jan 31 2018 Return: Wed Feb 28 2018 Trip spans 29 days
EVA Air
EVA Air
ORD
BNE
42h 00m
1 stop
BNE
ORD
37h 00m
1 stop
Depart: Sun Nov 26 2017 Return: Sat Dec 2 2017 Trip spans 7 days
China Eastern
China Eastern
ORD
SYD
74h 40m
3 stops
SYD
ORD
65h 10m
3 stops
Depart: Fri Dec 29 2017 Return: Sat Jan 13 2018 Trip spans 16 days
Multiple Airlines
Multiple Airlines
ORD
PER
43h 20m
2 stops
PER
ORD
49h 30m
2 stops
Depart: Wed Nov 15 2017 Return: Fri Dec 8 2017 Trip spans 24 days
China Eastern
China Eastern
ORD
SYD
50h 40m
3 stops
SYD
ORD
40h 20m
3 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Chicago
$640
Destination

Brisbane
$987
Perth
$846
Melbourne
$927
Sydney
$640