Map of flight path and driving directions from Chicago to Lexington.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Lexington Blue Grass Airport (LEX).
How far is Lexington from Chicago?
There are several ways to calculate distances between Chicago and Lexington. Here are two common methods:Vincenty's formula (applied above)
- 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 – the shortest distance between two points).
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 73 kg (160 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Lexington (LEX).