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Chicago (ORD) - Decatur (DEC)
Calculations with different methods
- 156.262 miles
- 251.479 kilometers
- 135.788 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
- 156.401 miles
- 251.703 kilometers
- 135.908 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from O'Hare International Airport (ORD) to Decatur Airport (DEC) is 47 minutes.
Time difference and current local times
There is no time difference between Chicago and Decatur.
Flight map from Chicago to Decatur.
Frequent Flyer Miles Calculator
Chicago (ORD) → Decatur (DEC).