Air Miles Calculator

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

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

Driving distance from Houston (HOU) to Washington D.C. (IAD) is 1399 miles / 2252 kilometers and travel time by car is about 24 hours 19 minutes.

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

Shortest flight path between Houston William P. Hobby Airport (HOU) and Washington Dulles International Airport (IAD).

How far is Washington D.C. from Houston?

There are several ways to calculate distances between Houston and Washington D.C.. 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 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

B 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

Time difference and current local times

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

Time Difference

Houston, TX

 CST

Washington D.C.

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 161 kg (356 pounds).

Frequent Flyer Miles Calculator

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

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

In total

Total frequent flyer miles:
1201

Round trip?