Air Miles Calculator

Distance between Rock Springs, WY (RKS) and Springfield, IL (SPI)

Flight distance from Rock Springs to Springfield (Southwest Wyoming Regional Airport – Springfield Abraham Lincoln Capital Airport) is 1023 miles / 1646 kilometers / 889 nautical miles. Estimated flight time is 2 hours 26 minutes.

Driving distance from Rock Springs (RKS) to Springfield (SPI) is 1127 miles / 1814 kilometers and travel time by car is about 18 hours 41 minutes.

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

Shortest flight path between Southwest Wyoming Regional Airport (RKS) and Springfield Abraham Lincoln Capital Airport (SPI).

How far is Springfield from Rock Springs?

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

Vincenty's formula (applied above)
  • 1022.779 miles
  • 1646.003 kilometers
  • 888.771 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
  • 1020.235 miles
  • 1641.909 kilometers
  • 886.560 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 Springfield Abraham Lincoln Capital Airport
City: Springfield, IL
Country: United States Flag of United States
IATA Code: SPI
ICAO Code: KSPI
Coordinates: 39°50′38″N, 89°40′40″W

Time difference and current local times

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

Time Difference

Rock Springs, WY

 MDT

Springfield, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 152 kg (336 pounds).

Frequent Flyer Miles Calculator

Rock Springs (RKS) → Springfield (SPI).

Distance:
1023
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1023

Round trip?