Calculations with different methods
- 677.865 miles
- 1090.918 kilometers
- 589.048 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
- 676.254 miles
- 1088.325 kilometers
- 587.649 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 Philadelphia International Airport (PHL) is 1 hour 47 minutes.
Time difference and current local times
The time difference between Chicago and Philadelphia is 1 hour. Philadelphia is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 110 kg (243 pounds).
Chicago to Philadelphia flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Philadelphia (PHL).