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.
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Chicago - Houston
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.
Time Difference
Chicago, IL
Houston, TX
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 145 kg (321 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Houston (IAH).
In total
Round trip?