# Distance between Houston, TX (IAH) and Grayling, AK (KGX)

Flight distance from Houston to Grayling (Houston George Bush Intercontinental Airport – Grayling Airport) is 3610 miles / 5810 kilometers / 3137 nautical miles. Estimated flight time is 7 hours 20 minutes.

Driving distance from Houston (IAH) to Grayling (KGX) is 4671 miles / 7517 kilometers and travel time by car is about 133 hours 3 minutes.

## Map of flight path and driving directions from Houston to Grayling.

Shortest flight path between Houston George Bush Intercontinental Airport (IAH) and Grayling Airport (KGX).

## How far is Grayling from Houston?

There are several ways to calculate distances between Houston and Grayling. Here are two common methods:

Vincenty's formula (applied above)
• 3609.870 miles
• 5809.523 kilometers
• 3136.891 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
• 3604.332 miles
• 5800.610 kilometers
• 3132.079 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 George Bush Intercontinental Airport
City: Houston, TX
Country: United States
IATA Code: IAH
ICAO Code: KIAH
Coordinates: 29°59′3″N, 95°20′29″W

B Grayling Airport
City: Grayling, AK
Country: United States
IATA Code: KGX
ICAO Code: PAGX
Coordinates: 62°53′42″N, 160°3′58″W

## Time difference and current local times

The time difference between Houston and Grayling is 3 hours. Grayling is 3 hours behind Houston.

CST

AKST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 408 kg (900 pounds).

## Frequent Flyer Miles Calculator

Houston (IAH) → Grayling (KGX).

Distance:
3610
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
3610

Round trip?