Air Miles Calculator

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 Flag of 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 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 Rapid City and Chicago is 1 hour. Chicago is 1 hour ahead of Rapid City.

Time Difference

Rapid City, SD

 MDT

Chicago, IL

 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?