Air Miles Calculator

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

Distance from Raleigh–Durham International Airport to O'Hare International Airport is 646 miles / 1040 kilometers / 562 nautical miles.

Calculations with different 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).

Flight duration

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.

Time Difference

Raleigh
Chicago

Raleigh, NC

 EST

Chicago, IL

 CST

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 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

Map

Flight map from Raleigh to Chicago.

Frequent Flyer Miles Calculator

Raleigh (RDU) → Chicago (ORD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
646
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
646

Round trip?