Air Miles Calculator

Distance between Fort Hood, TX (GRK) and Houston, TX (IAH)

Distance from Killeen–Fort Hood Regional Airport to George Bush Intercontinental Airport is 166 miles / 267 kilometers / 144 nautical miles.

Calculations with different methods

Vincenty's formula (applied above)
  • 166.033 miles
  • 267.204 kilometers
  • 144.279 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
  • 165.872 miles
  • 266.945 kilometers
  • 144.139 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 Killeen–Fort Hood Regional Airport (GRK) to George Bush Intercontinental Airport (IAH) is 48 minutes.

Time difference and current local times

There is no time difference between Fort Hood and Houston.

Time Difference

Fort Hood
Houston

Fort Hood, TX

 CST

Houston, TX

 CST

Airport information


A Killeen–Fort Hood Regional Airport
City: Fort Hood, TX
Country: United States Flag of United States
IATA Code: GRK
ICAO Code: KGRK
Coordinates: 31°4′1″N, 97°49′44″W

B 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

Map

Flight map from Fort Hood to Houston.

Frequent Flyer Miles Calculator

Fort Hood (GRK) → Houston (IAH).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
166
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
166

Round trip?