Calculations with different methods
- 294.660 miles
- 474.209 kilometers
- 256.053 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
- 295.300 miles
- 475.240 kilometers
- 256.609 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 Valley International Airport (HRL) is 1 hour 3 minutes.
Time difference and current local times
There is no time difference between Houston and Harlingen.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 66 kg (146 pounds).
Houston to Harlingen flight map.
Frequent Flyer Miles Calculator
Houston (IAH) → Harlingen (HRL).