Air Miles Calculator

Distance between Houston, TX (IAH) and Austin, TX (AUS)

Flight distance from Houston to Austin (Houston George Bush Intercontinental Airport – Austin–Bergstrom International Airport) is 140 miles / 226 kilometers / 122 nautical miles. Estimated flight time is 45 minutes.

Driving distance from Houston (IAH) to Austin (AUS) is 171 miles / 275 kilometers and travel time by car is about 2 hours 59 minutes.

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

Shortest flight path between Houston George Bush Intercontinental Airport (IAH) and Austin–Bergstrom International Airport (AUS).

How far is Austin from Houston?

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

Vincenty's formula (applied above)
  • 140.223 miles
  • 225.667 kilometers
  • 121.851 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
  • 139.956 miles
  • 225.238 kilometers
  • 121.619 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 Flag of United States
IATA Code: IAH
ICAO Code: KIAH
Coordinates: 29°59′3″N, 95°20′29″W

B Austin–Bergstrom International Airport
City: Austin, TX
Country: United States Flag of United States
IATA Code: AUS
ICAO Code: KAUS
Coordinates: 30°11′40″N, 97°40′11″W

Time difference and current local times

There is no time difference between Houston and Austin.

Time Difference

Houston, TX

 CST

Austin, TX

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 46 kg (101 pounds).

Frequent Flyer Miles Calculator

Houston (IAH) → Austin (AUS).

Distance:
140
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
140

Round trip?