# Distance between St Louis, MO (STL) and Casper, WY (CPR)

Flight distance from St Louis to Casper (St. Louis Lambert International Airport – Casper–Natrona County International Airport) is 889 miles / 1431 kilometers / 773 nautical miles. Estimated flight time is 2 hours 11 minutes.

Driving distance from St Louis (STL) to Casper (CPR) is 1059 miles / 1704 kilometers and travel time by car is about 17 hours 29 minutes.

## Map of flight path and driving directions from St Louis to Casper.

Shortest flight path between St. Louis Lambert International Airport (STL) and Casper–Natrona County International Airport (CPR).

## How far is Casper from St Louis?

There are several ways to calculate distances between St Louis and Casper. Here are two common methods:

Vincenty's formula (applied above)
• 889.351 miles
• 1431.272 kilometers
• 772.825 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
• 887.443 miles
• 1428.201 kilometers
• 771.167 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 St. Louis Lambert International Airport
City: St Louis, MO
Country: United States
IATA Code: STL
ICAO Code: KSTL
Coordinates: 38°44′55″N, 90°22′12″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 St Louis and Casper is 1 hour. Casper is 1 hour behind St Louis.

CDT

MDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 143 kg (315 pounds).

## Frequent Flyer Miles Calculator

St Louis (STL) → Casper (CPR).

Distance:
889
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
889

Round trip?