How far is Decatur, IL, from Johnstown, PA?
The distance between Johnstown (Johnstown–Cambria County Airport) and Decatur (Decatur Airport) is 532 miles / 857 kilometers / 463 nautical miles.
The driving distance from Johnstown (JST) to Decatur (DEC) is 607 miles / 977 kilometers, and travel time by car is about 11 hours 44 minutes.
Johnstown–Cambria County Airport – Decatur Airport
Search flights
Distance from Johnstown to Decatur
There are several ways to calculate the distance from Johnstown to Decatur. Here are two standard methods:
Vincenty's formula (applied above)- 532.465 miles
- 856.920 kilometers
- 462.700 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- 531.140 miles
- 854.787 kilometers
- 461.548 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 Decatur?
The estimated flight time from Johnstown–Cambria County Airport to Decatur Airport is 1 hour and 30 minutes.
What is the time difference between Johnstown and Decatur?
The time difference between Johnstown and Decatur is 1 hour. Decatur is 1 hour behind Johnstown.
Flight carbon footprint between Johnstown–Cambria County Airport (JST) and Decatur Airport (DEC)
On average, flying from Johnstown to Decatur generates about 103 kg of CO2 per passenger, and 103 kilograms equals 228 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 Decatur
See the map of the shortest flight path between Johnstown–Cambria County Airport (JST) and Decatur Airport (DEC).
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 | Decatur Airport |
|---|---|
| City: | Decatur, IL |
| Country: | United States |
| IATA Code: | DEC |
| ICAO Code: | KDEC |
| Coordinates: | 39°50′4″N, 88°51′56″W |