How far is Rockford, IL, from Johnstown, PA?
The distance between Johnstown (Johnstown–Cambria County Airport) and Rockford (Chicago Rockford International Airport) is 550 miles / 885 kilometers / 478 nautical miles.
The driving distance from Johnstown (JST) to Rockford (RFD) is 638 miles / 1026 kilometers, and travel time by car is about 11 hours 50 minutes.
Johnstown–Cambria County Airport – Chicago Rockford International Airport
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Distance from Johnstown to Rockford
There are several ways to calculate the distance from Johnstown to Rockford. Here are two standard methods:
Vincenty's formula (applied above)- 549.607 miles
- 884.506 kilometers
- 477.595 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- 548.310 miles
- 882.419 kilometers
- 476.468 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 Johnstown to Rockford?
The estimated flight time from Johnstown–Cambria County Airport to Chicago Rockford International Airport is 1 hour and 32 minutes.
What is the time difference between Johnstown and Rockford?
The time difference between Johnstown and Rockford is 1 hour. Rockford is 1 hour behind Johnstown.
Flight carbon footprint between Johnstown–Cambria County Airport (JST) and Chicago Rockford International Airport (RFD)
On average, flying from Johnstown to Rockford generates about 106 kg of CO2 per passenger, and 106 kilograms equals 234 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Johnstown to Rockford
See the map of the shortest flight path between Johnstown–Cambria County Airport (JST) and Chicago Rockford International Airport (RFD).
Airport information
| Origin | Johnstown–Cambria County Airport |
|---|---|
| City: | Johnstown, PA |
| Country: | United States  |
| IATA Code: | JST |
| ICAO Code: | KJST |
| Coordinates: | 40°18′57″N, 78°50′2″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 |