Map of flight path and driving directions from South Bend to Decatur.
Shortest flight path between South Bend International Airport (SBN) and Decatur Airport (DEC).
How far is Decatur from South Bend?
There are several ways to calculate distances between South Bend and Decatur. Here are two common methods:Vincenty's formula (applied above)
- 185.981 miles
- 299.308 kilometers
- 161.613 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
- 185.855 miles
- 299.105 kilometers
- 161.504 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 South Bend and Decatur is 1 hour. Decatur is 1 hour behind South Bend.
South Bend, IN
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 52 kg (115 pounds).
Frequent Flyer Miles Calculator
South Bend (SBN) → Decatur (DEC).