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Raleigh–Chicago | RDU–ORD
Calculations with different methods
- 646.198 miles
- 1039.955 kilometers
- 561.531 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
- 645.739 miles
- 1039.216 kilometers
- 561.132 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Raleigh–Durham International Airport (RDU) to O'Hare International Airport (ORD) is 1 hour 43 minutes.
Time difference and current local times
The time difference between Raleigh and Chicago is 1 hour. Chicago is 1 hour behind Raleigh.
Raleigh to Chicago flight map.
Frequent Flyer Miles Calculator
Raleigh (RDU) → Chicago (ORD).