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How far is Brookings, SD, from Rockford, IL?

The distance between Rockford (Chicago Rockford International Airport) and Brookings (Brookings Regional Airport) is 416 miles / 669 kilometers / 361 nautical miles.

The driving distance from Rockford (RFD) to Brookings (BKX) is 559 miles / 899 kilometers, and travel time by car is about 10 hours 11 minutes.

Chicago Rockford International Airport – Brookings Regional Airport

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416
Miles
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669
Kilometers
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361
Nautical miles

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Distance from Rockford to Brookings

There are several ways to calculate the distance from Rockford to Brookings. Here are two standard methods:

Vincenty's formula (applied above)
  • 415.668 miles
  • 668.953 kilometers
  • 361.206 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula
  • 414.733 miles
  • 667.448 kilometers
  • 360.393 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).

How long does it take to fly from Rockford to Brookings?

The estimated flight time from Chicago Rockford International Airport to Brookings Regional Airport is 1 hour and 17 minutes.

What is the time difference between Rockford and Brookings?

There is no time difference between Rockford and Brookings.

Flight carbon footprint between Chicago Rockford International Airport (RFD) and Brookings Regional Airport (BKX)

On average, flying from Rockford to Brookings generates about 86 kg of CO2 per passenger, and 86 kilograms equals 190 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Rockford to Brookings

See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and Brookings Regional Airport (BKX).

Airport information

Origin Chicago Rockford International Airport
City: Rockford, IL
Country: United States Flag of United States
IATA Code: RFD
ICAO Code: KRFD
Coordinates: 42°11′43″N, 89°5′49″W
Destination Brookings Regional Airport
City: Brookings, SD
Country: United States Flag of United States
IATA Code: BKX
ICAO Code: KBKX
Coordinates: 44°18′17″N, 96°49′0″W