How far is Helena, MT, from Chicago, IL?
The distance between Chicago (Chicago O'Hare International Airport) and Helena (Helena Regional Airport) is 1231 miles / 1981 kilometers / 1069 nautical miles.
The driving distance from Chicago (ORD) to Helena (HLN) is 1455 miles / 2341 kilometers, and travel time by car is about 25 hours 58 minutes.
Chicago O'Hare International Airport – Helena Regional Airport
Search flights
Distance from Chicago to Helena
There are several ways to calculate the distance from Chicago to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 1230.723 miles
- 1980.656 kilometers
- 1069.469 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- 1227.627 miles
- 1975.675 kilometers
- 1066.779 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 Chicago to Helena?
The estimated flight time from Chicago O'Hare International Airport to Helena Regional Airport is 2 hours and 49 minutes.
What is the time difference between Chicago and Helena?
The time difference between Chicago and Helena is 1 hour. Helena is 1 hour behind Chicago.
Flight carbon footprint between Chicago O'Hare International Airport (ORD) and Helena Regional Airport (HLN)
On average, flying from Chicago to Helena generates about 163 kg of CO2 per passenger, and 163 kilograms equals 359 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Chicago to Helena
See the map of the shortest flight path between Chicago O'Hare International Airport (ORD) and Helena Regional Airport (HLN).
Airport information
| Origin | Chicago O'Hare International Airport |
|---|---|
| City: | Chicago, IL |
| Country: | United States  |
| IATA Code: | ORD |
| ICAO Code: | KORD |
| Coordinates: | 41°58′42″N, 87°54′17″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 |