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Chicago–Raleigh | ORD–RDU
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 O'Hare International Airport (ORD) to Raleigh–Durham International Airport (RDU) is 1 hour 43 minutes.
Time difference and current local times
The time difference between Chicago and Raleigh is 1 hour. Raleigh is 1 hour ahead of Chicago.
Chicago to Raleigh flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Raleigh (RDU).