Map of flight path and driving directions from Houston to Ontario.
Shortest flight path between Houston William P. Hobby Airport (HOU) and Ontario International Airport (ONT).
How far is Ontario from Houston?
There are several ways to calculate distances between Houston and Ontario. Here are two common methods:Vincenty's formula (applied above)
- 1344.522 miles
- 2163.799 kilometers
- 1168.358 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
- 1342.102 miles
- 2159.903 kilometers
- 1166.254 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).
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 170 kg (374 pounds).
Frequent Flyer Miles Calculator
Houston (HOU) → Ontario (ONT).