How far is Chicago from Washington D.C.?
There are several ways to calculate distances between Washington D.C. and Chicago. Here are two common methods:Vincenty's formula (applied above)
- 611.819 miles
- 984.627 kilometers
- 531.656 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
- 610.572 miles
- 982.620 kilometers
- 530.573 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 Ronald Reagan Washington National Airport (DCA) to O'Hare International Airport (ORD) is 1 hour 39 minutes.
Time difference and current local times
The time difference between Washington D.C. and Chicago is 1 hour. Chicago is 1 hour behind Washington D.C..
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 114 kg (252 pounds).
Washington D.C. to Chicago flight map.
Frequent Flyer Miles Calculator
Washington D.C. (DCA) → Chicago (ORD).