Map of flight path and driving directions from Spokane to Decatur.
Shortest flight path between Spokane International Airport (GEG) and Decatur Airport (DEC).
How far is Decatur from Spokane?
There are several ways to calculate distances between Spokane and Decatur. Here are two common methods:Vincenty's formula (applied above)
- 1521.958 miles
- 2449.353 kilometers
- 1322.545 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
- 1518.497 miles
- 2443.784 kilometers
- 1319.538 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).
Time difference and current local times
The time difference between Spokane and Decatur is 2 hours. Decatur is 2 hours ahead of Spokane.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 181 kg (399 pounds).
Frequent Flyer Miles Calculator
Spokane (GEG) → Decatur (DEC).