# Distance between Redmond, OR (RDM) and Great Falls, MT (GTF)

Flight distance from Redmond to Great Falls (Roberts Field – Great Falls International Airport) is 521 miles / 839 kilometers / 453 nautical miles. Estimated flight time is 1 hour 29 minutes.

Driving distance from Redmond (RDM) to Great Falls (GTF) is 764 miles / 1230 kilometers and travel time by car is about 13 hours 54 minutes.

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

Shortest flight path between Roberts Field (RDM) and Great Falls International Airport (GTF).

## How far is Great Falls from Redmond?

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

Vincenty's formula (applied above)
• 521.328 miles
• 838.996 kilometers
• 453.022 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
• 520.158 miles
• 837.113 kilometers
• 452.005 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 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

## Time difference and current local times

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

PST

MST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 102 kg (224 pounds).

## Frequent Flyer Miles Calculator

Redmond (RDM) → Great Falls (GTF).

Distance:
521
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
521

Round trip?