# Distance between Chicago, IL (ORD) and Rock Springs, WY (RKS)

Flight distance from Chicago to Rock Springs (Chicago O'Hare International Airport – Southwest Wyoming Regional Airport) is 1091 miles / 1755 kilometers / 948 nautical miles. Estimated flight time is 2 hours 33 minutes.

Driving distance from Chicago (ORD) to Rock Springs (RKS) is 1209 miles / 1946 kilometers and travel time by car is about 19 hours 47 minutes.

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

Shortest flight path between Chicago O'Hare International Airport (ORD) and Southwest Wyoming Regional Airport (RKS).

## How far is Rock Springs from Chicago?

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

Vincenty's formula (applied above)
• 1090.524 miles
• 1755.028 kilometers
• 947.640 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
• 1087.688 miles
• 1750.464 kilometers
• 945.175 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 Chicago O'Hare International Airport
City: Chicago, IL
Country: United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W

B 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

## Time difference and current local times

The time difference between Chicago and Rock Springs is 1 hour. Rock Springs is 1 hour behind Chicago.

CDT

MDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 156 kg (344 pounds).

## Frequent Flyer Miles Calculator

Chicago (ORD) → Rock Springs (RKS).

Distance:
1091
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1091

Round trip?