How far is San Antonio, TX, from Rockford, IL?
The distance between Rockford (Chicago Rockford International Airport) and San Antonio (San Antonio International Airport) is 1018 miles / 1638 kilometers / 884 nautical miles.
The driving distance from Rockford (RFD) to San Antonio (SAT) is 1187 miles / 1910 kilometers, and travel time by car is about 21 hours 56 minutes.
Chicago Rockford International Airport – San Antonio International Airport
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Distance from Rockford to San Antonio
There are several ways to calculate the distance from Rockford to San Antonio. Here are two standard methods:
Vincenty's formula (applied above)- 1017.665 miles
- 1637.774 kilometers
- 884.327 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 1018.660 miles
- 1639.374 kilometers
- 885.191 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).
How long does it take to fly from Rockford to San Antonio?
The estimated flight time from Chicago Rockford International Airport to San Antonio International Airport is 2 hours and 25 minutes.
What is the time difference between Rockford and San Antonio?
There is no time difference between Rockford and San Antonio.
Flight carbon footprint between Chicago Rockford International Airport (RFD) and San Antonio International Airport (SAT)
On average, flying from Rockford to San Antonio generates about 152 kg of CO2 per passenger, and 152 kilograms equals 335 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Rockford to San Antonio
See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and San Antonio International Airport (SAT).
Airport information
| Origin | Chicago Rockford International Airport |
|---|---|
| City: | Rockford, IL |
| Country: | United States  |
| IATA Code: | RFD |
| ICAO Code: | KRFD |
| Coordinates: | 42°11′43″N, 89°5′49″W |
| Destination | San Antonio International Airport |
|---|---|
| City: | San Antonio, TX |
| Country: | United States |
| IATA Code: | SAT |
| ICAO Code: | KSAT |
| Coordinates: | 29°32′1″N, 98°28′11″W |