Calculations with different methods
- 4442.909 miles
- 7150.169 kilometers
- 3860.783 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
- 4430.830 miles
- 7130.729 kilometers
- 3850.286 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Zurich Airport (ZRH) to O'Hare International Airport (ORD) is 8 hours 54 minutes.
Time difference and current local times
The time difference between Zurich and Chicago is 7 hours. Chicago is 7 hours behind Zurich.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 545 kg (1 202 pounds).
Zurich to Chicago flight map.
Frequent Flyer Miles Calculator
Zurich (ZRH) → Chicago (ORD).