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

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

Driving distance from Rock Springs (RKS) to Chicago (ORD) is 1211 miles / 1949 kilometers and travel time by car is about 19 hours 52 minutes.

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

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

## How far is Chicago from Rock Springs?

There are several ways to calculate distances between Rock Springs and Chicago. 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 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 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

## Time difference and current local times

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

MDT

CDT

## Carbon dioxide emissions

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

## Frequent Flyer Miles Calculator

Rock Springs (RKS) → Chicago (ORD).

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

### In total

Total frequent flyer miles:
1091

Round trip?