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

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

Driving distance from Austin (AUS) to Houston (IAH) is 158 miles / 254 kilometers and travel time by car is about 2 hours 54 minutes.

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

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

How far is Houston from Austin?

There are several ways to calculate distances between Austin and Houston. 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 Austin–Bergstrom International Airport
City: Austin, TX
Country: United States
IATA Code: AUS
ICAO Code: KAUS
Coordinates: 30°11′40″N, 97°40′11″W

B 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

Time difference and current local times

There is no time difference between Austin and Houston.

CDT

CDT

Carbon dioxide emissions

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

Frequent Flyer Miles Calculator

Austin (AUS) → Houston (IAH).

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

In total

Total frequent flyer miles:
140

Round trip?