Calculations with different methods
- 1333.600 miles
- 2146.221 kilometers
- 1158.867 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
- 1331.142 miles
- 2142.265 kilometers
- 1156.730 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 Ontario International Airport (ONT) is 3 hours 1 minutes.
Time difference and current local times
The time difference between Houston and Ontario is 2 hours. Ontario is 2 hours behind Houston.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 169 kg (372 pounds).
Houston to Ontario flight map.
Frequent Flyer Miles Calculator
Houston (IAH) → Ontario (ONT).