Air Miles Calculator

Distance between Denver, CO (DEN) and Rockford, IL (RFD)

Distance from Denver to Rockford (Denver International Airport – Chicago Rockford International Airport) is 828 miles / 1333 kilometers / 720 nautical miles.

How far is Rockford from Denver?

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

Vincenty's formula (applied above)
  • 828.472 miles
  • 1333.296 kilometers
  • 719.922 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
  • 826.472 miles
  • 1330.078 kilometers
  • 718.184 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 Denver International Airport (DEN) to Chicago Rockford International Airport (RFD) is 2 hours 4 minutes.

Time difference and current local times

The time difference between Denver and Rockford is 1 hour. Rockford is 1 hour ahead of Denver.

Time Difference

Denver
Rockford

Denver, CO

 MST

Rockford, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 137 kg (303 pounds).

Airport information


A Denver International Airport
City: Denver, CO
Country: United States Flag of United States
IATA Code: DEN
ICAO Code: KDEN
Coordinates: 39°51′42″N, 104°40′22″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

Map

Denver to Rockford flight map.

Frequent Flyer Miles Calculator

Denver (DEN) → Rockford (RFD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
828
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
828

Round trip?