How far is Rockford, IL, from Saint John?
The distance between Saint John (Saint John Airport) and Rockford (Chicago Rockford International Airport) is 1177 miles / 1894 kilometers / 1023 nautical miles.
The driving distance from Saint John (YSJ) to Rockford (RFD) is 1487 miles / 2393 kilometers, and travel time by car is about 28 hours 27 minutes.
Saint John Airport – Chicago Rockford International Airport
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Distance from Saint John to Rockford
There are several ways to calculate the distance from Saint John to Rockford. Here are two standard methods:
Vincenty's formula (applied above)- 1176.839 miles
- 1893.938 kilometers
- 1022.645 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- 1173.780 miles
- 1889.015 kilometers
- 1019.987 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 Saint John to Rockford?
The estimated flight time from Saint John Airport to Chicago Rockford International Airport is 2 hours and 43 minutes.
What is the time difference between Saint John and Rockford?
Flight carbon footprint between Saint John Airport (YSJ) and Chicago Rockford International Airport (RFD)
On average, flying from Saint John to Rockford generates about 160 kg of CO2 per passenger, and 160 kilograms equals 354 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Saint John to Rockford
See the map of the shortest flight path between Saint John Airport (YSJ) and Chicago Rockford International Airport (RFD).
Airport information
| Origin | Saint John Airport |
|---|---|
| City: | Saint John |
| Country: | Canada  |
| IATA Code: | YSJ |
| ICAO Code: | CYSJ |
| Coordinates: | 45°18′57″N, 65°53′25″W |
| Destination | 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 |