# Distance between Rapid City, SD (RAP) and Chicago, IL (ORD)

Flight distance from Rapid City to Chicago (Rapid City Regional Airport – Chicago O'Hare International Airport) is 780 miles / 1255 kilometers / 677 nautical miles. Estimated flight time is 1 hour 58 minutes.

Driving distance from Rapid City (RAP) to Chicago (ORD) is 898 miles / 1445 kilometers and travel time by car is about 14 hours 38 minutes.

## Map of flight path and driving directions from Rapid City to Chicago.

Shortest flight path between Rapid City Regional Airport (RAP) and Chicago O'Hare International Airport (ORD).

## How far is Chicago from Rapid City?

There are several ways to calculate distances between Rapid City and Chicago. Here are two common methods:

Vincenty's formula (applied above)
• 779.542 miles
• 1254.550 kilometers
• 677.403 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
• 777.551 miles
• 1251.347 kilometers
• 675.673 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 Rapid City Regional Airport
City: Rapid City, SD
Country: United States
IATA Code: RAP
ICAO Code: KRAP
Coordinates: 44°2′43″N, 103°3′25″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 Rapid City and Chicago is 1 hour. Chicago is 1 hour ahead of Rapid City.

MDT

CDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 133 kg (293 pounds).

## Frequent Flyer Miles Calculator

Rapid City (RAP) → Chicago (ORD).

Distance:
780
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
780

Round trip?