Air Miles Calculator

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

Distance from Houston to Decatur (Decatur Airport – George Bush Intercontinental Airport) is 772 miles / 1242 kilometers / 671 nautical miles.

Calculations with different 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).

Flight duration

Estimated flight time from George Bush Intercontinental Airport (IAH) to Decatur Airport (DEC) is 1 hour 57 minutes.

Time difference and current local times

There is no time difference between Houston and Decatur.

Time Difference

Houston
Decatur

Houston, TX

 CST

Decatur, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 119 kg (263 pounds).

Airport information


A George Bush Intercontinental Airport
City: Houston, TX
Country: United States Flag of United States
IATA Code: IAH
ICAO Code: KIAH
Coordinates: 29°59′3″N, 95°20′29″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

Map

Houston to Decatur flight map.

Frequent Flyer Miles Calculator

Houston (IAH) → Decatur (DEC).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
772
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
772

Round trip?