Air Miles Calculator

Distance between Lexington, KY (LEX) and Rockford, IL (RFD)

Flight distance from Lexington to Rockford (Lexington Blue Grass Airport – Chicago Rockford International Airport) is 373 miles / 600 kilometers / 324 nautical miles. Estimated flight time is 1 hour 12 minutes.

Driving distance from Lexington (LEX) to Rockford (RFD) is 450 miles / 724 kilometers and travel time by car is about 8 hours 3 minutes.

Map of flight path and driving directions from Lexington to Rockford.

Shortest flight path between Lexington Blue Grass Airport (LEX) and Chicago Rockford International Airport (RFD).

How far is Rockford from Lexington?

There are several ways to calculate distances between Lexington and Rockford. Here are two common methods:

Vincenty's formula (applied above)
  • 372.623 miles
  • 599.679 kilometers
  • 323.801 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
  • 372.559 miles
  • 599.575 kilometers
  • 323.745 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).

Airport information


A Lexington Blue Grass Airport
City: Lexington, KY
Country: United States Flag of United States
IATA Code: LEX
ICAO Code: KLEX
Coordinates: 38°2′11″N, 84°36′21″W

B Chicago Rockford International Airport
City: Rockford, IL
Country: United States Flag of United States
IATA Code: RFD
ICAO Code: KRFD
Coordinates: 42°11′43″N, 89°5′49″W

Time difference and current local times

The time difference between Lexington and Rockford is 1 hour. Rockford is 1 hour behind Lexington.

Time Difference

Lexington, KY

 EST

Rockford, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 80 kg (176 pounds).

Frequent Flyer Miles Calculator

Lexington (LEX) → Rockford (RFD).

Distance:
373
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
373

Round trip?