How far is Sydney from Chicago?
There are several ways to calculate distances between Chicago and Sydney. Here are two common methods:Vincenty's formula (applied above)
- 1408.758 miles
- 2267.176 kilometers
- 1224.177 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.Haversine formula
- 1405.111 miles
- 2261.307 kilometers
- 1221.008 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
Estimated flight time from Chicago O'Hare International Airport (ORD) to Sydney/J.A. Douglas McCurdy Airport (YQY) is 3 hours 10 minutes.
Time difference and current local times
The time difference between Chicago and Sydney is 2 hours. Sydney is 2 hours ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 168 kg (370 pounds).
Chicago to Sydney flight path
Shortest flight path between Chicago O'Hare International Airport (ORD) and Sydney/J.A. Douglas McCurdy Airport (YQY).
Frequent Flyer Miles Calculator
Chicago (ORD) → Sydney (YQY).