How far is Spokane, WA, from Portsmouth, NH?
The distance between Portsmouth (Portsmouth International Airport at Pease) and Spokane (Spokane International Airport) is 2261 miles / 3639 kilometers / 1965 nautical miles.
The driving distance from Portsmouth (PSM) to Spokane (GEG) is 2715 miles / 4369 kilometers, and travel time by car is about 50 hours 29 minutes.
Portsmouth International Airport at Pease – Spokane International Airport
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Distance from Portsmouth to Spokane
There are several ways to calculate the distance from Portsmouth to Spokane. Here are two standard methods:
Vincenty's formula (applied above)- 2261.177 miles
- 3639.011 kilometers
- 1964.909 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- 2254.972 miles
- 3629.026 kilometers
- 1959.517 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 Spokane?
The estimated flight time from Portsmouth International Airport at Pease to Spokane International Airport is 4 hours and 46 minutes.
What is the time difference between Portsmouth and Spokane?
The time difference between Portsmouth and Spokane is 3 hours. Spokane is 3 hours behind Portsmouth.
Flight carbon footprint between Portsmouth International Airport at Pease (PSM) and Spokane International Airport (GEG)
On average, flying from Portsmouth to Spokane generates about 247 kg of CO2 per passenger, and 247 kilograms equals 546 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 Spokane
See the map of the shortest flight path between Portsmouth International Airport at Pease (PSM) and Spokane International Airport (GEG).
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 | Spokane International Airport |
|---|---|
| City: | Spokane, WA |
| Country: | United States |
| IATA Code: | GEG |
| ICAO Code: | KGEG |
| Coordinates: | 47°37′11″N, 117°32′2″W |