# 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
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
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.

CDT

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?