How far is Portsmouth from Spokane?
There are several ways to calculate distances between Spokane and Portsmouth. Here are two common 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 earth.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).
Estimated flight time from Spokane International Airport (GEG) to Portsmouth International Airport at Pease (PSM) is 4 hours 46 minutes.
Time difference and current local times
The time difference between Spokane and Portsmouth is 3 hours. Portsmouth is 3 hours ahead of Spokane.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 251 kg (554 pounds).
Spokane to Portsmouth flight map.
Frequent Flyer Miles Calculator
Spokane (GEG) → Portsmouth (PSM).