Air Miles Calculator

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 Flag of 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 Flag of 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.

Time Difference

St Louis, MO

 CST

Casper, WY

 MST

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?