Air Miles Calculator

Distance between St Louis, MO (STL) and Rockford, IL (RFD)

Flight distance from St Louis to Rockford (St. Louis Lambert International Airport – Chicago Rockford International Airport) is 247 miles / 398 kilometers / 215 nautical miles. Estimated flight time is 58 minutes.

Driving distance from St Louis (STL) to Rockford (RFD) is 301 miles / 484 kilometers and travel time by car is about 5 hours 17 minutes.

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).

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 Chicago Rockford International Airport
City: Rockford, IL
Country: United States Flag of United States
IATA Code: RFD
ICAO Code: KRFD
Coordinates: 42°11′43″N, 89°5′49″W

Time difference and current local times

There is no time difference between St Louis and Rockford.

Time Difference

St Louis, MO

 CST

Rockford, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 61 kg (135 pounds).

Frequent Flyer Miles Calculator

St Louis (STL) → Rockford (RFD).

Distance:
247
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
247

Round trip?