Air Miles Calculator

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

Flight distance from Houston to Washington D.C. (Houston George Bush Intercontinental Airport – Ronald Reagan Washington National Airport) is 1208 miles / 1944 kilometers / 1049 nautical miles. Estimated flight time is 2 hours 47 minutes.

Driving distance from Houston (IAH) to Washington D.C. (DCA) is 1422 miles / 2288 kilometers and travel time by car is about 24 hours 44 minutes.

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

Shortest flight path between Houston George Bush Intercontinental Airport (IAH) and Ronald Reagan Washington National Airport (DCA).

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)
  • 1207.698 miles
  • 1943.602 kilometers
  • 1049.461 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
  • 1206.475 miles
  • 1941.634 kilometers
  • 1048.398 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 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

B Ronald Reagan Washington National Airport
City: Washington D.C.
Country: United States Flag of United States
IATA Code: DCA
ICAO Code: KDCA
Coordinates: 38°51′7″N, 77°2′15″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

 CDT

Washington D.C.

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 162 kg (357 pounds).

Frequent Flyer Miles Calculator

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

Distance:
1208
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1208

Round trip?