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

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

Driving distance from Houston (IAH) to Chicago (ORD) is 1082 miles / 1742 kilometers and travel time by car is about 20 hours 21 minutes.

925
Miles
1489
Kilometers
804
Nautical miles
2 h 15 min
145 kg

## How far is Chicago from Houston?

There are several ways to calculate distances between Los Angeles and Chicago. 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).

## Flight Duration

Estimated flight time from Houston George Bush Intercontinental Airport to Chicago O'Hare International Airport is 2 hours 15 minutes.

## Time difference

There is no time difference between Houston and Chicago.

## Carbon dioxide emissions

On average flying from Houston to Chicago generates about 145 kg of CO2 per passenger, 145 kilograms is equal to 321 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

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

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

## Airport information

Origin 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
Destination 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