# Distance between Rock Springs, WY (RKS) and Champaign, IL (CMI)

Flight distance from Rock Springs to Champaign (Southwest Wyoming Regional Airport – University of Illinois Willard Airport) is 1092 miles / 1758 kilometers / 949 nautical miles. Estimated flight time is 2 hours 34 minutes.

Driving distance from Rock Springs (RKS) to Champaign (CMI) is 1215 miles / 1956 kilometers and travel time by car is about 20 hours 12 minutes.

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

Shortest flight path between Southwest Wyoming Regional Airport (RKS) and University of Illinois Willard Airport (CMI).

## How far is Champaign from Rock Springs?

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

Vincenty's formula (applied above)
• 1092.330 miles
• 1757.935 kilometers
• 949.209 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
• 1089.589 miles
• 1753.524 kilometers
• 946.827 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
IATA Code: RKS
ICAO Code: KRKS
Coordinates: 41°35′39″N, 109°3′54″W

B University of Illinois Willard Airport
City: Champaign, IL
Country: United States
IATA Code: CMI
ICAO Code: KCMI
Coordinates: 40°2′21″N, 88°16′41″W

## Time difference and current local times

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

MDT

CDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 156 kg (345 pounds).

## Frequent Flyer Miles Calculator

Rock Springs (RKS) → Champaign (CMI).

Distance:
1092
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1092

Round trip?