How far is Rockford, IL, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Rockford (Chicago Rockford International Airport) is 1168 miles / 1880 kilometers / 1015 nautical miles.
The driving distance from Helena (HLN) to Rockford (RFD) is 1399 miles / 2251 kilometers, and travel time by car is about 24 hours 53 minutes.
Helena Regional Airport – Chicago Rockford International Airport
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Distance from Helena to Rockford
There are several ways to calculate the distance from Helena to Rockford. 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 Helena to Rockford?
The estimated flight time from Helena Regional Airport to Chicago Rockford International Airport is 2 hours and 42 minutes.
What is the time difference between Helena and Rockford?
The time difference between Helena and Rockford is 1 hour. Rockford is 1 hour ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Chicago Rockford International Airport (RFD)
On average, flying from Helena to Rockford 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 Helena to Rockford
See the map of the shortest flight path between Helena Regional Airport (HLN) and Chicago Rockford International Airport (RFD).
Airport information
| Origin | Helena Regional Airport |
|---|---|
| City: | Helena, MT |
| Country: | United States  |
| IATA Code: | HLN |
| ICAO Code: | KHLN |
| Coordinates: | 46°36′24″N, 111°58′58″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 |