# Distance between Washington D.C. (IAD) and Casper, WY (CPR)

Flight distance from Washington D.C. to Casper (Washington Dulles International Airport – Casper–Natrona County International Airport) is 1535 miles / 2470 kilometers / 1334 nautical miles. Estimated flight time is 3 hours 24 minutes.

Driving distance from Washington D.C. (IAD) to Casper (CPR) is 1824 miles / 2936 kilometers and travel time by car is about 30 hours 45 minutes.

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

Shortest flight path between Washington Dulles International Airport (IAD) and Casper–Natrona County International Airport (CPR).

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

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

Vincenty's formula (applied above)
• 1534.736 miles
• 2469.919 kilometers
• 1333.649 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
• 1531.007 miles
• 2463.916 kilometers
• 1330.408 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 Casper–Natrona County International Airport
City: Casper, WY
Country: United States
IATA Code: CPR
ICAO Code: KCPR
Coordinates: 42°54′28″N, 106°27′50″W

## Time difference and current local times

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

EST

MST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 182 kg (401 pounds).

## Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Casper (CPR).

Distance:
1535
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1535

Round trip?