Calculations with different methods
- 397.616 miles
- 639.902 kilometers
- 345.519 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
- 396.576 miles
- 638.227 kilometers
- 344.615 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 Erie International Airport (ERI) is 1 hour 15 minutes.
Time difference and current local times
The time difference between Chicago and Erie is 1 hour. Erie is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 80 kg (176 pounds).
Chicago to Erie flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Erie (ERI).