# Distance between Washington D.C. (IAD) and Alamosa, CO (ALS)

Flight distance from Washington D.C. to Alamosa (Washington Dulles International Airport – San Luis Valley Regional Airport) is 1544 miles / 2485 kilometers / 1342 nautical miles. Estimated flight time is 3 hours 25 minutes.

Driving distance from Washington D.C. (IAD) to Alamosa (ALS) is 1739 miles / 2799 kilometers and travel time by car is about 31 hours 1 minutes.

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

Shortest flight path between Washington Dulles International Airport (IAD) and San Luis Valley Regional Airport (ALS).

## How far is Alamosa from Washington D.C.?

There are several ways to calculate distances between Washington D.C. and Alamosa. Here are two common methods:

Vincenty's formula (applied above)
• 1543.826 miles
• 2484.547 kilometers
• 1341.548 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
• 1540.156 miles
• 2478.641 kilometers
• 1338.359 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
Coordinates: 38°56′40″N, 77°27′20″W

B San Luis Valley Regional Airport
City: Alamosa, CO
Country: United States
IATA Code: ALS
ICAO Code: KALS
Coordinates: 37°26′5″N, 105°52′1″W

## Time difference and current local times

The time difference between Washington D.C. and Alamosa is 2 hours. Alamosa is 2 hours behind Washington D.C..

EDT

MDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 182 kg (402 pounds).

## Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Alamosa (ALS).

Distance:
1544
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1544

Round trip?