Map of flight path and driving directions from Houston to Harlingen.
Shortest flight path between Houston George Bush Intercontinental Airport (IAH) and Valley International Airport (HRL).
How far is Harlingen from Houston?
There are several ways to calculate distances between Houston and Harlingen. Here are two common methods:Vincenty's formula (applied above)
- 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 – the shortest distance between two points).
Time difference and current local times
There is no time difference between Houston and Harlingen.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 68 kg (151 pounds).
Frequent Flyer Miles Calculator
Houston (IAH) → Harlingen (HRL).