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

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

The driving distance from Brookings (BKX) to Rockford (RFD) is 558 miles / 898 kilometers, and travel time by car is about 9 hours 59 minutes.

Brookings Regional Airport – Chicago Rockford International 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 Brookings to Rockford

There are several ways to calculate the distance from Brookings to Rockford. 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 Brookings to Rockford?

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

What is the time difference between Brookings and Rockford?

There is no time difference between Brookings and Rockford.

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

On average, flying from Brookings to Rockford 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 Brookings to Rockford

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

Airport information

Origin 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
Destination 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