How far is San Sebastian from Rockford, IL?
The distance between Rockford (Chicago Rockford International Airport) and San Sebastian (San Sebastián Airport) is 4218 miles / 6789 kilometers / 3666 nautical miles.
Chicago Rockford International Airport – San Sebastián Airport
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Distance from Rockford to San Sebastian
There are several ways to calculate the distance from Rockford to San Sebastian. Here are two standard methods:
Vincenty's formula (applied above)- 4218.479 miles
- 6788.985 kilometers
- 3665.758 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- 4207.349 miles
- 6771.072 kilometers
- 3656.086 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 Sebastian?
The estimated flight time from Chicago Rockford International Airport to San Sebastián Airport is 8 hours and 29 minutes.
What is the time difference between Rockford and San Sebastian?
Flight carbon footprint between Chicago Rockford International Airport (RFD) and San Sebastián Airport (EAS)
On average, flying from Rockford to San Sebastian generates about 484 kg of CO2 per passenger, and 484 kilograms equals 1 066 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from Rockford to San Sebastian
See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and San Sebastián Airport (EAS).
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 Sebastián Airport |
|---|---|
| City: | San Sebastian |
| Country: | Spain  |
| IATA Code: | EAS |
| ICAO Code: | LESO |
| Coordinates: | 43°21′23″N, 1°47′26″W |