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).
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.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 161 kg (356 pounds).
Frequent Flyer Miles Calculator
Houston (HOU) → Washington D.C. (IAD).