Map of flight path and driving directions from Chicago to Key West.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Key West International Airport (EYW).
How far is Key West from Chicago?
There are several ways to calculate distances between Chicago and Key West. Here are two common methods:Vincenty's formula (applied above)
- 1251.408 miles
- 2013.946 kilometers
- 1087.444 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
- 1254.132 miles
- 2018.329 kilometers
- 1089.811 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 Key West is 1 hour. Key West is 1 hour ahead of Chicago.
Key West, FL
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 164 kg (361 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Key West (EYW).