How far is Rockford, IL, from Denver, CO?

The distance between Denver (Denver International Airport) and Rockford (Chicago Rockford International Airport) is 828 miles / 1333 kilometers / 720 nautical miles.

The driving distance from Denver (DEN) to Rockford (RFD) is 941 miles / 1514 kilometers, and travel time by car is about 16 hours 37 minutes.

Distance from Denver to Rockford

There are several ways to calculate the distance from Denver to Rockford. Here are two standard 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 planet.

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).

How long does it take to fly from Denver to Rockford?

The estimated flight time from Denver International Airport to Chicago Rockford International Airport is 2 hours and 4 minutes.

What is the time difference between Denver and Rockford?

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

Flight carbon footprint between Denver International Airport (DEN) and Chicago Rockford International Airport (RFD)

On average, flying from Denver to Rockford generates about 137 kg of CO2 per passenger, and 137 kilograms equals 303 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Denver to Rockford

See the map of the shortest flight path between Denver International Airport (DEN) and Chicago Rockford International Airport (RFD).

Airport information

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

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