Map of flight path and driving directions from Raleigh to Chicago.
Shortest flight path between Raleigh–Durham International Airport (RDU) and Chicago O'Hare International Airport (ORD).
How far is Chicago from Raleigh?
There are several ways to calculate distances between Raleigh and Chicago. 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 Raleigh and Chicago is 1 hour. Chicago is 1 hour behind Raleigh.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 118 kg (261 pounds).
Frequent Flyer Miles Calculator
Raleigh (RDU) → Chicago (ORD).