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

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

The driving distance from Rockford (RFD) to Denver (DEN) is 943 miles / 1517 kilometers, and travel time by car is about 16 hours 40 minutes.

Distance from Rockford to Denver

There are several ways to calculate the distance from Rockford to Denver. 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 Rockford to Denver?

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

What is the time difference between Rockford and Denver?

The time difference between Rockford and Denver is 1 hour. Denver is 1 hour behind Rockford.

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

On average, flying from Rockford to Denver 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 Rockford to Denver

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

Airport information

Origin	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

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