Map of flight path and driving directions from Chicago to Raleigh.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Raleigh–Durham International Airport (RDU).
How far is Raleigh from Chicago?
There are several ways to calculate distances between Chicago and Raleigh. Here are two common methods:Vincenty's formula (applied above)
- 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 – the shortest distance between two points).
Time difference and current local times
The time difference between Chicago and Raleigh is 1 hour. Raleigh is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 118 kg (261 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Raleigh (RDU).