Air Miles Calculator

Distance between Redmond, OR (RDM) and Decatur, IL (DEC)

Flight distance from Redmond to Decatur (Roberts Field – Decatur Airport) is 1677 miles / 2700 kilometers / 1458 nautical miles. Estimated flight time is 3 hours 40 minutes.

Driving distance from Redmond (RDM) to Decatur (DEC) is 1978 miles / 3183 kilometers and travel time by car is about 33 hours 28 minutes.

Map of flight path and driving directions from Redmond to Decatur.

Shortest flight path between Roberts Field (RDM) and Decatur Airport (DEC).

How far is Decatur from Redmond?

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

Vincenty's formula (applied above)
  • 1677.404 miles
  • 2699.521 kilometers
  • 1457.625 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
  • 1673.221 miles
  • 2692.789 kilometers
  • 1453.989 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 Flag of United States
IATA Code: RDM
ICAO Code: KRDM
Coordinates: 44°15′14″N, 121°9′0″W

B Decatur Airport
City: Decatur, IL
Country: United States Flag of United States
IATA Code: DEC
ICAO Code: KDEC
Coordinates: 39°50′4″N, 88°51′56″W

Time difference and current local times

The time difference between Redmond and Decatur is 2 hours. Decatur is 2 hours ahead of Redmond.

Time Difference

Redmond, OR

 PST

Decatur, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 191 kg (421 pounds).

Frequent Flyer Miles Calculator

Redmond (RDM) → Decatur (DEC).

Distance:
1677
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1677

Round trip?