Calculations with different methods
- 473.235 miles
- 761.598 kilometers
- 411.230 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
- 472.019 miles
- 759.641 kilometers
- 410.173 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Buffalo Niagara International Airport (BUF) to O'Hare International Airport (ORD) is 1 hour 23 minutes.
Time difference and current local times
The time difference between Buffalo and Chicago is 1 hour. Chicago is 1 hour behind Buffalo.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 89 kg (195 pounds).
Buffalo to Chicago flight map.
Frequent Flyer Miles Calculator
Buffalo (BUF) → Chicago (ORD).