How far is Portsmouth, NH, from Spokane, WA?
The distance between Spokane (Spokane International Airport) and Portsmouth (Portsmouth International Airport at Pease) is 2261 miles / 3639 kilometers / 1965 nautical miles.
The driving distance from Spokane (GEG) to Portsmouth (PSM) is 2717 miles / 4373 kilometers, and travel time by car is about 50 hours 32 minutes.
Spokane International Airport – Portsmouth International Airport at Pease
Search flights
Distance from Spokane to Portsmouth
There are several ways to calculate the distance from Spokane to Portsmouth. 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 Spokane to Portsmouth?
The estimated flight time from Spokane International Airport to Portsmouth International Airport at Pease is 4 hours and 46 minutes.
What is the time difference between Spokane and Portsmouth?
Flight carbon footprint between Spokane International Airport (GEG) and Portsmouth International Airport at Pease (PSM)
On average, flying from Spokane to Portsmouth 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 Spokane to Portsmouth
See the map of the shortest flight path between Spokane International Airport (GEG) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Spokane International Airport |
|---|---|
| City: | Spokane, WA |
| Country: | United States  |
| IATA Code: | GEG |
| ICAO Code: | KGEG |
| Coordinates: | 47°37′11″N, 117°32′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 |