Map of flight path and driving directions from Chicago to Athens.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Athens Ben Epps Airport (AHN).
How far is Athens from Chicago?
There are several ways to calculate distances between Chicago and Athens. Here are two common methods:Vincenty's formula (applied above)
- 607.391 miles
- 977.501 kilometers
- 527.809 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
- 608.053 miles
- 978.566 kilometers
- 528.383 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 Athens is 1 hour. Athens is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 114 kg (251 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Athens (AHN).