Map of flight path and driving directions from Houston to Decatur.
Shortest flight path between Houston George Bush Intercontinental Airport (IAH) and Decatur Airport (DEC).
How far is Decatur from Houston?
There are several ways to calculate distances between Houston and Decatur. Here are two common methods:Vincenty's formula (applied above)
- 771.640 miles
- 1241.833 kilometers
- 670.536 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
- 772.630 miles
- 1243.428 kilometers
- 671.398 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 Decatur.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 132 kg (291 pounds).
Frequent Flyer Miles Calculator
Houston (IAH) → Decatur (DEC).