Map of flight path and driving directions from St Louis to Rockford.
Shortest flight path between St. Louis Lambert International Airport (STL) and Chicago Rockford International Airport (RFD).
How far is Rockford from St Louis?
There are several ways to calculate distances between St Louis and Rockford. Here are two common methods:Vincenty's formula (applied above)
- 247.088 miles
- 397.649 kilometers
- 214.713 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
- 247.354 miles
- 398.077 kilometers
- 214.945 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).
Time difference and current local times
There is no time difference between St Louis and Rockford.
St Louis, MO
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 61 kg (135 pounds).
Frequent Flyer Miles Calculator
St Louis (STL) → Rockford (RFD).