Air Miles Calculator

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 Flag of United States
IATA Code: IAD
ICAO Code: KIAD
Coordinates: 38°56′40″N, 77°27′20″W

B Houston George Bush Intercontinental Airport
City: Houston, TX
Country: United States Flag of 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..

Time Difference

Washington D.C.

 EST

Houston, TX

 CST

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?