# Distance between Houston, TX (IAH) and San Antonio, TX (SAT)

Flight distance from Houston to San Antonio (Houston George Bush Intercontinental Airport – San Antonio International Airport) is 191 miles / 307 kilometers / 166 nautical miles. Estimated flight time is 51 minutes.

Driving distance from Houston (IAH) to San Antonio (SAT) is 215 miles / 346 kilometers and travel time by car is about 3 hours 37 minutes.

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

Shortest flight path between Houston George Bush Intercontinental Airport (IAH) and San Antonio International Airport (SAT).

## How far is San Antonio from Houston?

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

Vincenty's formula (applied above)
• 190.550 miles
• 306.661 kilometers
• 165.583 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
• 190.206 miles
• 306.106 kilometers
• 165.284 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 San Antonio International Airport
City: San Antonio, TX
Country: United States
IATA Code: SAT
ICAO Code: KSAT
Coordinates: 29°32′1″N, 98°28′11″W

## Time difference and current local times

There is no time difference between Houston and San Antonio.

CDT

CDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 53 kg (117 pounds).

## Frequent Flyer Miles Calculator

Houston (IAH) → San Antonio (SAT).

Distance:
191
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
191

Round trip?