How far is Saint John from Rockford, IL?
The distance between Rockford (Chicago Rockford International Airport) and Saint John (Saint John Airport) is 1177 miles / 1894 kilometers / 1023 nautical miles.
The driving distance from Rockford (RFD) to Saint John (YSJ) is 1488 miles / 2395 kilometers, and travel time by car is about 28 hours 29 minutes.
Chicago Rockford International Airport – Saint John Airport
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Distance from Rockford to Saint John
There are several ways to calculate the distance from Rockford to Saint John. 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 Rockford to Saint John?
The estimated flight time from Chicago Rockford International Airport to Saint John Airport is 2 hours and 43 minutes.
What is the time difference between Rockford and Saint John?
Flight carbon footprint between Chicago Rockford International Airport (RFD) and Saint John Airport (YSJ)
On average, flying from Rockford to Saint John 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 Rockford to Saint John
See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and Saint John Airport (YSJ).
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 | Saint John Airport |
|---|---|
| City: | Saint John |
| Country: | Canada  |
| IATA Code: | YSJ |
| ICAO Code: | CYSJ |
| Coordinates: | 45°18′57″N, 65°53′25″W |