Air Miles Calculator

Distance between South Bend, IN (SBN) and Rockford, IL (RFD)

Flight distance from South Bend to Rockford (South Bend International Airport – Chicago Rockford International Airport) is 147 miles / 237 kilometers / 128 nautical miles. Estimated flight time is 46 minutes.

Driving distance from South Bend (SBN) to Rockford (RFD) is 174 miles / 280 kilometers and travel time by car is about 3 hours 17 minutes.

Map of flight path and driving directions from South Bend to Rockford.

Shortest flight path between South Bend International Airport (SBN) and Chicago Rockford International Airport (RFD).

How far is Rockford from South Bend?

There are several ways to calculate distances between South Bend and Rockford. Here are two common methods:

Vincenty's formula (applied above)
  • 147.099 miles
  • 236.732 kilometers
  • 127.825 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
  • 146.743 miles
  • 236.160 kilometers
  • 127.516 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 South Bend International Airport
City: South Bend, IN
Country: United States Flag of United States
IATA Code: SBN
ICAO Code: KSBN
Coordinates: 41°42′31″N, 86°19′2″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

The time difference between South Bend and Rockford is 1 hour. Rockford is 1 hour behind South Bend.

Time Difference

South Bend, IN

 EDT

Rockford, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 47 kg (103 pounds).

Frequent Flyer Miles Calculator

South Bend (SBN) → Rockford (RFD).

Distance:
147
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
147

Round trip?