Air Miles Calculator

Distance between Houston, TX (HOU) and Decatur, IL (DEC)

Flight distance from Houston to Decatur (Houston William P. Hobby Airport – Decatur Airport) is 791 miles / 1273 kilometers / 687 nautical miles. Estimated flight time is 1 hour 59 minutes.

Driving distance from Houston (HOU) to Decatur (DEC) is 933 miles / 1502 kilometers and travel time by car is about 17 hours 1 minutes.

Map of flight path and driving directions from Houston to Decatur.

Shortest flight path between Houston William P. Hobby Airport (HOU) 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)
  • 790.945 miles
  • 1272.903 kilometers
  • 687.312 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
  • 792.030 miles
  • 1274.649 kilometers
  • 688.255 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).

Airport information


A Houston William P. Hobby Airport
City: Houston, TX
Country: United States Flag of United States
IATA Code: HOU
ICAO Code: KHOU
Coordinates: 29°38′43″N, 95°16′44″W

B Decatur Airport
City: Decatur, IL
Country: United States Flag of United States
IATA Code: DEC
ICAO Code: KDEC
Coordinates: 39°50′4″N, 88°51′56″W

Time difference and current local times

There is no time difference between Houston and Decatur.

Time Difference

Houston, TX

 CST

Decatur, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 134 kg (295 pounds).

Frequent Flyer Miles Calculator

Houston (HOU) → Decatur (DEC).

Distance:
791
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
791

Round trip?