# Distance between Washington D.C. (IAD) and Houston, TX (IAH)

Flight distance from Washington D.C. to Houston (Washington Dulles International Airport – Houston George Bush Intercontinental Airport) is 1190 miles / 1915 kilometers / 1034 nautical miles. Estimated flight time is 2 hours 45 minutes.

Driving distance from Washington D.C. (IAD) to Houston (IAH) is 1388 miles / 2233 kilometers and travel time by car is about 24 hours 15 minutes.

## Map of flight path and driving directions from Washington D.C. to Houston.

Shortest flight path between Washington Dulles International Airport (IAD) and Houston George Bush Intercontinental Airport (IAH).

## How far is Houston from Washington D.C.?

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

Vincenty's formula (applied above)
• 1190.057 miles
• 1915.211 kilometers
• 1034.131 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
• 1188.919 miles
• 1913.380 kilometers
• 1033.143 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 Washington Dulles International Airport
City: Washington D.C.
Country: United States
Coordinates: 38°56′40″N, 77°27′20″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

The time difference between Washington D.C. and Houston is 1 hour. Houston is 1 hour behind Washington D.C..

EDT

CDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 161 kg (355 pounds).

## Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Houston (IAH).

Distance:
1190
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1190

Round trip?