How far is Portsmouth, NH, from Johnstown, PA?
The distance between Johnstown (Johnstown–Cambria County Airport) and Portsmouth (Portsmouth International Airport at Pease) is 456 miles / 734 kilometers / 396 nautical miles.
The driving distance from Johnstown (JST) to Portsmouth (PSM) is 569 miles / 915 kilometers, and travel time by car is about 11 hours 24 minutes.
Johnstown–Cambria County Airport – Portsmouth International Airport at Pease
Search flights
Distance from Johnstown to Portsmouth
There are several ways to calculate the distance from Johnstown to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 455.823 miles
- 733.576 kilometers
- 396.099 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- 454.938 miles
- 732.152 kilometers
- 395.330 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 Portsmouth?
The estimated flight time from Johnstown–Cambria County Airport to Portsmouth International Airport at Pease is 1 hour and 21 minutes.
What is the time difference between Johnstown and Portsmouth?
There is no time difference between Johnstown and Portsmouth.
Flight carbon footprint between Johnstown–Cambria County Airport (JST) and Portsmouth International Airport at Pease (PSM)
On average, flying from Johnstown to Portsmouth generates about 92 kg of CO2 per passenger, and 92 kilograms equals 203 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 Portsmouth
See the map of the shortest flight path between Johnstown–Cambria County Airport (JST) and Portsmouth International Airport at Pease (PSM).
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 | Portsmouth International Airport at Pease |
|---|---|
| City: | Portsmouth, NH |
| Country: | United States |
| IATA Code: | PSM |
| ICAO Code: | KPSM |
| Coordinates: | 43°4′40″N, 70°49′23″W |