Map of flight path and driving directions from Spokane to Idaho Falls.
Shortest flight path between Spokane International Airport (GEG) and Idaho Falls Regional Airport (IDA).
How far is Idaho Falls from Spokane?
There are several ways to calculate distances between Spokane and Idaho Falls. Here are two common methods:Vincenty's formula (applied above)
- 387.882 miles
- 624.236 kilometers
- 337.061 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
- 387.470 miles
- 623.573 kilometers
- 336.703 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).
Time difference and current local times
The time difference between Spokane and Idaho Falls is 1 hour. Idaho Falls is 1 hour ahead of Spokane.
Idaho Falls, ID
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 82 kg (181 pounds).
Frequent Flyer Miles Calculator
Spokane (GEG) → Idaho Falls (IDA).