Calculations with different methods
- 989.721 miles
- 1592.802 kilometers
- 860.044 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
- 988.004 miles
- 1590.038 kilometers
- 858.552 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Regina International Airport (YQR) to O'Hare International Airport (ORD) is 2 hours 22 minutes.
Time difference and current local times
The time difference between Regina and Chicago is 1 hour. Chicago is 1 hour ahead of Regina.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 139 kg (307 pounds).
Regina to Chicago flight map.
Frequent Flyer Miles Calculator
Regina (YQR) → Chicago (ORD).