Calculations with different methods
- 1846.120 miles
- 2971.042 kilometers
- 1604.235 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
- 1841.724 miles
- 2963.967 kilometers
- 1600.414 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from San Francisco International Airport (SFO) to O'Hare International Airport (ORD) is 3 hours 59 minutes.
Time difference and current local times
The time difference between San Francisco and Chicago is 2 hours. Chicago is 2 hours ahead of San Francisco.
San Francisco, CA
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 214 kg (472 pounds).
San Francisco to Chicago flight map.
Frequent Flyer Miles Calculator
San Francisco (SFO) → Chicago (ORD).