Air Miles Calculator

Distance between Rock Springs, WY (RKS) and Rockford, IL (RFD)

Flight distance from Rock Springs to Rockford (Southwest Wyoming Regional Airport – Chicago Rockford International Airport) is 1028 miles / 1655 kilometers / 893 nautical miles. Estimated flight time is 2 hours 26 minutes.

Driving distance from Rock Springs (RKS) to Rockford (RFD) is 1158 miles / 1864 kilometers and travel time by car is about 19 hours 0 minutes.

Map of flight path and driving directions from Rock Springs to Rockford.

Shortest flight path between Southwest Wyoming Regional Airport (RKS) and Chicago Rockford International Airport (RFD).

How far is Rockford from Rock Springs?

There are several ways to calculate distances between Rock Springs and Rockford. Here are two common methods:

Vincenty's formula (applied above)
  • 1028.139 miles
  • 1654.630 kilometers
  • 893.429 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
  • 1025.462 miles
  • 1650.322 kilometers
  • 891.103 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 Southwest Wyoming Regional Airport
City: Rock Springs, WY
Country: United States Flag of United States
IATA Code: RKS
ICAO Code: KRKS
Coordinates: 41°35′39″N, 109°3′54″W

B 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

Time difference and current local times

The time difference between Rock Springs and Rockford is 1 hour. Rockford is 1 hour ahead of Rock Springs.

Time Difference

Rock Springs, WY

 MDT

Rockford, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 153 kg (336 pounds).

Frequent Flyer Miles Calculator

Rock Springs (RKS) → Rockford (RFD).

Distance:
1028
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1028

Round trip?