Map of flight path and driving directions from Boise to Rockford.
Shortest flight path between Boise Airport (BOI) and Chicago Rockford International Airport (RFD).
How far is Rockford from Boise?
There are several ways to calculate distances between Boise and Rockford. Here are two common methods:Vincenty's formula (applied above)
- 1374.178 miles
- 2211.525 kilometers
- 1194.128 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
- 1370.537 miles
- 2205.666 kilometers
- 1190.964 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 Boise and Rockford is 1 hour. Rockford is 1 hour ahead of Boise.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 172 kg (378 pounds).
Frequent Flyer Miles Calculator
Boise (BOI) → Rockford (RFD).