How far is Rockford from Duluth?
There are several ways to calculate distances between Duluth and Rockford. Here are two common methods:Vincenty's formula (applied above)
- 355.371 miles
- 571.914 kilometers
- 308.809 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
- 355.379 miles
- 571.927 kilometers
- 308.816 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).
Estimated flight time from Duluth International Airport (DLH) to Chicago Rockford International Airport (RFD) is 1 hour 10 minutes.
Time difference and current local times
There is no time difference between Duluth and Rockford.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 76 kg (167 pounds).
Duluth to Rockford flight path
Shortest flight path between Duluth International Airport (DLH) and Chicago Rockford International Airport (RFD).
Frequent Flyer Miles Calculator
Duluth (DLH) → Rockford (RFD).