Map of flight path and driving directions from San Diego to Rockford.
Shortest flight path between San Diego International Airport (SAN) and Chicago Rockford International Airport (RFD).
How far is Rockford from San Diego?
There are several ways to calculate distances between San Diego and Rockford. Here are two common methods:Vincenty's formula (applied above)
- 1666.642 miles
- 2682.200 kilometers
- 1448.272 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
- 1663.804 miles
- 2677.633 kilometers
- 1445.806 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 San Diego and Rockford is 2 hours. Rockford is 2 hours ahead of San Diego.
San Diego, CA
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 190 kg (420 pounds).
Frequent Flyer Miles Calculator
San Diego (SAN) → Rockford (RFD).