How far is Great Falls, MT, from Chicago, IL?
The distance between Chicago (Chicago O'Hare International Airport) and Great Falls (Great Falls International Airport) is 1210 miles / 1948 kilometers / 1052 nautical miles.
The driving distance from Chicago (ORD) to Great Falls (GTF) is 1373 miles / 2210 kilometers, and travel time by car is about 25 hours 6 minutes.
Chicago O'Hare International Airport – Great Falls International Airport
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Distance from Chicago to Great Falls
There are several ways to calculate the distance from Chicago to Great Falls. Here are two standard methods:
Vincenty's formula (applied above)- 1210.473 miles
- 1948.067 kilometers
- 1051.872 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- 1207.522 miles
- 1943.318 kilometers
- 1049.308 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 Great Falls?
The estimated flight time from Chicago O'Hare International Airport to Great Falls International Airport is 2 hours and 47 minutes.
What is the time difference between Chicago and Great Falls?
The time difference between Chicago and Great Falls is 1 hour. Great Falls is 1 hour behind Chicago.
Flight carbon footprint between Chicago O'Hare International Airport (ORD) and Great Falls International Airport (GTF)
On average, flying from Chicago to Great Falls generates about 162 kg of CO2 per passenger, and 162 kilograms equals 357 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 Great Falls
See the map of the shortest flight path between Chicago O'Hare International Airport (ORD) and Great Falls International Airport (GTF).
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 | Great Falls International Airport |
|---|---|
| City: | Great Falls, MT |
| Country: | United States |
| IATA Code: | GTF |
| ICAO Code: | KGTF |
| Coordinates: | 47°28′55″N, 111°22′15″W |