# 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
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
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.

EDT

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?