Calculations with different methods
- 323.366 miles
- 520.408 kilometers
- 280.998 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
- 323.461 miles
- 520.559 kilometers
- 281.080 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 Blue Grass Airport (LEX) is 1 hour 6 minutes.
Time difference and current local times
The time difference between Chicago and Lexington is 1 hour. Lexington is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 70 kg (155 pounds).
Chicago to Lexington flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Lexington (LEX).