# Distance between Chicago, IL (ORD) and Houston, TX (IAH)

Flight distance from Chicago to Houston (Chicago O'Hare International Airport – Houston George Bush Intercontinental Airport) is 925 miles / 1489 kilometers / 804 nautical miles. Estimated flight time is 2 hours 15 minutes.

Driving distance from Chicago (ORD) to Houston (IAH) is 1074 miles / 1729 kilometers and travel time by car is about 18 hours 49 minutes.

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

Shortest flight path between Chicago O'Hare International Airport (ORD) and Houston George Bush Intercontinental Airport (IAH).

## How far is Houston from Chicago?

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

Vincenty's formula (applied above)
• 925.103 miles
• 1488.809 kilometers
• 803.892 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
• 926.249 miles
• 1490.654 kilometers
• 804.889 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 Chicago O'Hare International Airport
City: Chicago, IL
Country: United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″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 Chicago and Houston.

CDT

CDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 145 kg (321 pounds).

## Frequent Flyer Miles Calculator

Chicago (ORD) → Houston (IAH).

Distance:
925
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
925

Round trip?