Air Miles Calculator

Distance between Duluth, MN (DLH) and Rockford, IL (RFD)

Distance from Duluth to Rockford (Duluth International Airport – Chicago Rockford International Airport) is 355 miles / 572 kilometers / 309 nautical miles.

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).

Flight duration

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.

Time Difference

Duluth
Rockford

Duluth, MN

 CDT

Rockford, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 76 kg (167 pounds).

Airport information


A Duluth International Airport
City: Duluth, MN
Country: United States Flag of United States
IATA Code: DLH
ICAO Code: KDLH
Coordinates: 46°50′31″N, 92°11′36″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

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).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
355
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
355

Round trip?