How far is Helena, MT, from Modesto, CA?
The distance between Modesto (Modesto City–County Airport) and Helena (Helena Regional Airport) is 771 miles / 1241 kilometers / 670 nautical miles.
The driving distance from Modesto (MOD) to Helena (HLN) is 1089 miles / 1753 kilometers, and travel time by car is about 18 hours 46 minutes.
Modesto City–County Airport – Helena Regional Airport
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Distance from Modesto to Helena
There are several ways to calculate the distance from Modesto to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 771.391 miles
- 1241.433 kilometers
- 670.320 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- 771.211 miles
- 1241.144 kilometers
- 670.164 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 Modesto to Helena?
The estimated flight time from Modesto City–County Airport to Helena Regional Airport is 1 hour and 57 minutes.
What is the time difference between Modesto and Helena?
The time difference between Modesto and Helena is 1 hour. Helena is 1 hour ahead of Modesto.
Flight carbon footprint between Modesto City–County Airport (MOD) and Helena Regional Airport (HLN)
On average, flying from Modesto to Helena generates about 132 kg of CO2 per passenger, and 132 kilograms equals 291 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Modesto to Helena
See the map of the shortest flight path between Modesto City–County Airport (MOD) and Helena Regional Airport (HLN).
Airport information
| Origin | Modesto City–County Airport |
|---|---|
| City: | Modesto, CA |
| Country: | United States  |
| IATA Code: | MOD |
| ICAO Code: | KMOD |
| Coordinates: | 37°37′32″N, 120°57′14″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 |