Calculations with different methods
- 925.103 miles
- 1488.809 kilometers
- 803.892 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
- 926.249 miles
- 1490.654 kilometers
- 804.889 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from George Bush Intercontinental Airport (IAH) to O'Hare International Airport (ORD) is 2 hours 15 minutes.
Time difference and current local times
There is no time difference between Houston and Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 133 kg (294 pounds).
Houston to Chicago flight map.
Frequent Flyer Miles Calculator
Houston (IAH) → Chicago (ORD).