How far is Alamosa, CO, from Rockford, IL?
The distance between Rockford (Chicago Rockford International Airport) and Alamosa (San Luis Valley Regional Airport) is 949 miles / 1527 kilometers / 824 nautical miles.
The driving distance from Rockford (RFD) to Alamosa (ALS) is 1184 miles / 1906 kilometers, and travel time by car is about 21 hours 8 minutes.
Chicago Rockford International Airport – San Luis Valley Regional Airport
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Distance from Rockford to Alamosa
There are several ways to calculate the distance from Rockford to Alamosa. Here are two standard methods:
Vincenty's formula (applied above)- 948.775 miles
- 1526.906 kilometers
- 824.463 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- 946.866 miles
- 1523.833 kilometers
- 822.804 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 Alamosa?
The estimated flight time from Chicago Rockford International Airport to San Luis Valley Regional Airport is 2 hours and 17 minutes.
What is the time difference between Rockford and Alamosa?
The time difference between Rockford and Alamosa is 1 hour. Alamosa is 1 hour behind Rockford.
Flight carbon footprint between Chicago Rockford International Airport (RFD) and San Luis Valley Regional Airport (ALS)
On average, flying from Rockford to Alamosa generates about 147 kg of CO2 per passenger, and 147 kilograms equals 325 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 Alamosa
See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and San Luis Valley Regional Airport (ALS).
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 Luis Valley Regional Airport |
|---|---|
| City: | Alamosa, CO |
| Country: | United States |
| IATA Code: | ALS |
| ICAO Code: | KALS |
| Coordinates: | 37°26′5″N, 105°52′1″W |