Air Miles Calculator

Distance between St Louis, MO (STL) and Idaho Falls, ID (IDA)

Flight distance from St Louis to Idaho Falls (St. Louis Lambert International Airport – Idaho Falls Regional Airport) is 1175 miles / 1891 kilometers / 1021 nautical miles. Estimated flight time is 2 hours 43 minutes.

Driving distance from St Louis (STL) to Idaho Falls (IDA) is 1385 miles / 2229 kilometers and travel time by car is about 23 hours 26 minutes.

Map of flight path and driving directions from St Louis to Idaho Falls.

Shortest flight path between St. Louis Lambert International Airport (STL) and Idaho Falls Regional Airport (IDA).

How far is Idaho Falls from St Louis?

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

Vincenty's formula (applied above)
  • 1175.179 miles
  • 1891.268 kilometers
  • 1021.203 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
  • 1172.518 miles
  • 1886.985 kilometers
  • 1018.890 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 Idaho Falls Regional Airport
City: Idaho Falls, ID
Country: United States Flag of United States
IATA Code: IDA
ICAO Code: KIDA
Coordinates: 43°30′52″N, 112°4′15″W

Time difference and current local times

The time difference between St Louis and Idaho Falls is 1 hour. Idaho Falls is 1 hour behind St Louis.

Time Difference

St Louis, MO

 CST

Idaho Falls, ID

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 160 kg (354 pounds).

Frequent Flyer Miles Calculator

St Louis (STL) → Idaho Falls (IDA).

Distance:
1175
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1175

Round trip?