How far is Casper, WY, from Portsmouth, NH?
The distance between Portsmouth (Portsmouth International Airport at Pease) and Casper (Casper–Natrona County International Airport) is 1792 miles / 2884 kilometers / 1557 nautical miles.
The driving distance from Portsmouth (PSM) to Casper (CPR) is 2178 miles / 3505 kilometers, and travel time by car is about 39 hours 31 minutes.
Portsmouth International Airport at Pease – Casper–Natrona County International Airport
Search flights
Distance from Portsmouth to Casper
There are several ways to calculate the distance from Portsmouth to Casper. Here are two standard methods:
Vincenty's formula (applied above)- 1792.264 miles
- 2884.369 kilometers
- 1557.435 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- 1787.473 miles
- 2876.659 kilometers
- 1553.272 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 Portsmouth to Casper?
The estimated flight time from Portsmouth International Airport at Pease to Casper–Natrona County International Airport is 3 hours and 53 minutes.
What is the time difference between Portsmouth and Casper?
The time difference between Portsmouth and Casper is 2 hours. Casper is 2 hours behind Portsmouth.
Flight carbon footprint between Portsmouth International Airport at Pease (PSM) and Casper–Natrona County International Airport (CPR)
On average, flying from Portsmouth to Casper generates about 199 kg of CO2 per passenger, and 199 kilograms equals 440 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Portsmouth to Casper
See the map of the shortest flight path between Portsmouth International Airport at Pease (PSM) and Casper–Natrona County International Airport (CPR).
Airport information
| Origin | 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 |
| Destination | Casper–Natrona County International Airport |
|---|---|
| City: | Casper, WY |
| Country: | United States |
| IATA Code: | CPR |
| ICAO Code: | KCPR |
| Coordinates: | 42°54′28″N, 106°27′50″W |