How far is Modesto, CA, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Modesto (Modesto City–County Airport) is 771 miles / 1241 kilometers / 670 nautical miles.
The driving distance from Helena (HLN) to Modesto (MOD) is 1090 miles / 1754 kilometers, and travel time by car is about 18 hours 47 minutes.
Helena Regional Airport – Modesto City–County Airport
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Distance from Helena to Modesto
There are several ways to calculate the distance from Helena to Modesto. 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 Helena to Modesto?
The estimated flight time from Helena Regional Airport to Modesto City–County Airport is 1 hour and 57 minutes.
What is the time difference between Helena and Modesto?
The time difference between Helena and Modesto is 1 hour. Modesto is 1 hour behind Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Modesto City–County Airport (MOD)
On average, flying from Helena to Modesto 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 Helena to Modesto
See the map of the shortest flight path between Helena Regional Airport (HLN) and Modesto City–County Airport (MOD).
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 | 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 |