How far is Petersburg from Chicago?
There are several ways to calculate distances between Chicago and Petersburg. Here are two common methods:Vincenty's formula (applied above)
- 2221.946 miles
- 3575.876 kilometers
- 1930.819 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
- 2216.573 miles
- 3567.228 kilometers
- 1926.149 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).
Estimated flight time from O'Hare International Airport (ORD) to Petersburg James A. Johnson Airport (PSG) is 4 hours 42 minutes.
Time difference and current local times
The time difference between Chicago and Petersburg is 3 hours. Petersburg is 3 hours behind Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 247 kg (544 pounds).
Chicago to Petersburg flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Petersburg (PSG).