Air Miles Calculator

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

Distance from Rapid City to Chicago (O'Hare International Airport – Rapid City Regional Airport) is 780 miles / 1255 kilometers / 677 nautical miles.

Calculations with different 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).

Flight duration

Estimated flight time from Rapid City Regional Airport (RAP) to O'Hare International Airport (ORD) is 1 hour 58 minutes.

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
Chicago

Rapid City, SD

 MDT

Chicago, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 120 kg (265 pounds).

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 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

Rapid City to Chicago flight map.

Frequent Flyer Miles Calculator

Rapid City (RAP) → Chicago (ORD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
780
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
780

Round trip?