Melbourne
Chicago O'Hare Intl
1 stop
29h 40mCathay Pacific
Melbourne
Chicago O'Hare Intl
2 stops
51h 40mMultiple Airlines
Melbourne
Chicago O'Hare Intl
3 stops
31h 05mAir Canada
Melbourne
Chicago O'Hare Intl
1 stop
29h 40mCathay Pacific
Coolangatta Gold Coast
Chicago O'Hare Intl
2 stops
56h 40mMultiple Airlines
Melbourne
Chicago O'Hare Intl
2 stops
52h 20mEmirates
Sydney Kingsford Smith
Chicago O'Hare Intl
1 stop
26h 45mChicago O'Hare Intl
Sydney Kingsford Smith
2 stops
33h 25mANA
Sydney Kingsford Smith
Chicago O'Hare Intl
1 stop
31h 35mChicago O'Hare Intl
Sydney Kingsford Smith
1 stop
25h 40mCathay Pacific
Sydney Kingsford Smith
Chicago O'Hare Intl
2 stops
35h 40mChicago O'Hare Intl
Sydney Kingsford Smith
1 stop
25h 40mMultiple Airlines
Sydney Kingsford Smith
Chicago O'Hare Intl
1 stop
40h 35mChicago O'Hare Intl
Sydney Kingsford Smith
1 stop
27h 00mKorean Air
Sydney Kingsford Smith
Chicago O'Hare Intl
1 stop
40h 05mChicago O'Hare Intl
Sydney Kingsford Smith
1 stop
27h 00mJapan Airlines
Sydney Kingsford Smith
Chicago O'Hare Intl
2 stops
48h 50mChicago O'Hare Intl
Sydney Kingsford Smith
2 stops
65h 55mFinnair
January
$5,032
February
$4,996
March
$4,133
April
$5,388
May
$5,455
June
$5,049
July
$5,070
August
$4,013
September
$4,423
October
$5,040
November
$4,744
December
$4,853
At the present moment the cheapest month to fly business class to Chicago O'Hare Intl is currently August; with May being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.