How far is Helena, MT, from Rockford, IL?

The distance between Rockford (Chicago Rockford International Airport) and Helena (Helena Regional Airport) is 1168 miles / 1880 kilometers / 1015 nautical miles.

The driving distance from Rockford (RFD) to Helena (HLN) is 1400 miles / 2253 kilometers, and travel time by car is about 25 hours 1 minutes.

Distance from Rockford to Helena

There are several ways to calculate the distance from Rockford to Helena. Here are two standard methods:

Vincenty's formula (applied above)

• 1168.462 miles
• 1880.457 kilometers
• 1015.366 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

• 1165.517 miles
• 1875.717 kilometers
• 1012.806 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 Helena?

The estimated flight time from Chicago Rockford International Airport to Helena Regional Airport is 2 hours and 42 minutes.

What is the time difference between Rockford and Helena?

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

Flight carbon footprint between Chicago Rockford International Airport (RFD) and Helena Regional Airport (HLN)

On average, flying from Rockford to Helena generates about 160 kg of CO2 per passenger, and 160 kilograms equals 353 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 Helena

See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and Helena Regional Airport (HLN).

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	Helena Regional Airport
City:	Helena, MT
Country:	United States
IATA Code:	HLN
ICAO Code:	KHLN
Coordinates:	46°36′24″N, 111°58′58″W