Air Miles Calculator

Distance between Raleigh, NC (RDU) and Chicago, IL (ORD)

Flight distance from Raleigh to Chicago (Raleigh–Durham International Airport – Chicago O'Hare International Airport) is 646 miles / 1040 kilometers / 562 nautical miles. Estimated flight time is 1 hour 43 minutes.

Driving distance from Raleigh (RDU) to Chicago (ORD) is 805 miles / 1295 kilometers and travel time by car is about 14 hours 38 minutes.

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).

Airport information


A Raleigh–Durham International Airport
City: Raleigh, NC
Country: United States Flag of United States
IATA Code: RDU
ICAO Code: KRDU
Coordinates: 35°52′39″N, 78°47′14″W

B Chicago O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W

Time difference and current local times

The time difference between Raleigh and Chicago is 1 hour. Chicago is 1 hour behind Raleigh.

Time Difference

Raleigh, NC

 EDT

Chicago, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 118 kg (261 pounds).

Frequent Flyer Miles Calculator

Raleigh (RDU) → Chicago (ORD).

Distance:
646
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
646

Round trip?