Map of flight path and driving directions from Spokane to Rockford.
Shortest flight path between Spokane International Airport (GEG) and Chicago Rockford International Airport (RFD).
How far is Rockford from Spokane?
There are several ways to calculate distances between Spokane and Rockford. Here are two common methods:Vincenty's formula (applied above)
- 1435.861 miles
- 2310.794 kilometers
- 1247.729 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
- 1432.195 miles
- 2304.895 kilometers
- 1244.544 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).
Time difference and current local times
The time difference between Spokane and Rockford is 2 hours. Rockford is 2 hours ahead of Spokane.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 175 kg (387 pounds).
Frequent Flyer Miles Calculator
Spokane (GEG) → Rockford (RFD).