Air Miles Calculator

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

Flight distance from Washington D.C. to Houston (Washington Dulles International Airport – Houston William P. Hobby Airport) is 1201 miles / 1933 kilometers / 1044 nautical miles. Estimated flight time is 2 hours 46 minutes.

Driving distance from Washington D.C. (IAD) to Houston (HOU) is 1397 miles / 2248 kilometers and travel time by car is about 24 hours 17 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 William P. Hobby Airport (HOU).

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)
  • 1200.933 miles
  • 1932.715 kilometers
  • 1043.582 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
  • 1199.887 miles
  • 1931.031 kilometers
  • 1042.674 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 William P. Hobby Airport
City: Houston, TX
Country: United States Flag of United States
IATA Code: HOU
ICAO Code: KHOU
Coordinates: 29°38′43″N, 95°16′44″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 (356 pounds).

Frequent Flyer Miles Calculator

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

Distance:
1201
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1201

Round trip?