# Distance between Washington D.C. (IAD) and Cheyenne, WY (CYS)

Flight distance from Washington D.C. to Cheyenne (Washington Dulles International Airport – Cheyenne Regional Airport) is 1452 miles / 2338 kilometers / 1262 nautical miles. Estimated flight time is 3 hours 15 minutes.

Driving distance from Washington D.C. (IAD) to Cheyenne (CYS) is 1636 miles / 2633 kilometers and travel time by car is about 27 hours 51 minutes.

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

Shortest flight path between Washington Dulles International Airport (IAD) and Cheyenne Regional Airport (CYS).

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

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

Vincenty's formula (applied above)
• 1452.470 miles
• 2337.525 kilometers
• 1262.162 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
• 1448.899 miles
• 2331.777 kilometers
• 1259.059 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 Cheyenne Regional Airport
City: Cheyenne, WY
Country: United States
IATA Code: CYS
ICAO Code: KCYS
Coordinates: 41°9′20″N, 104°48′43″W

## Time difference and current local times

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

EDT

MDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 176 kg (389 pounds).

## Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Cheyenne (CYS).

Distance:
1452
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1452

Round trip?