# Distance between Redmond, OR (RDM) and Helena, MT (HLN)

Flight distance from Redmond to Helena (Roberts Field – Helena Regional Airport) is 474 miles / 763 kilometers / 412 nautical miles. Estimated flight time is 1 hour 23 minutes.

Driving distance from Redmond (RDM) to Helena (HLN) is 677 miles / 1089 kilometers and travel time by car is about 12 hours 10 minutes.

## Map of flight path and driving directions from Redmond to Helena.

Shortest flight path between Roberts Field (RDM) and Helena Regional Airport (HLN).

## How far is Helena from Redmond?

There are several ways to calculate distances between Redmond and Helena. Here are two common methods:

Vincenty's formula (applied above)
• 474.085 miles
• 762.967 kilometers
• 411.969 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
• 472.935 miles
• 761.116 kilometers
• 410.969 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).

## Airport information

A Roberts Field
City: Redmond, OR
Country: United States
IATA Code: RDM
ICAO Code: KRDM
Coordinates: 44°15′14″N, 121°9′0″W

B Helena Regional Airport
City: Helena, MT
Country: United States
IATA Code: HLN
ICAO Code: KHLN
Coordinates: 46°36′24″N, 111°58′58″W

## Time difference and current local times

The time difference between Redmond and Helena is 1 hour. Helena is 1 hour ahead of Redmond.

PST

MST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 95 kg (209 pounds).

## Frequent Flyer Miles Calculator

Redmond (RDM) → Helena (HLN).

Distance:
474
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
474

Round trip?