Air Miles Calculator

Distance between Spokane, WA (GEG) and Idaho Falls, ID (IDA)

Flight distance from Spokane to Idaho Falls (Spokane International Airport – Idaho Falls Regional Airport) is 388 miles / 624 kilometers / 337 nautical miles. Estimated flight time is 1 hour 14 minutes.

Driving distance from Spokane (GEG) to Idaho Falls (IDA) is 514 miles / 828 kilometers and travel time by car is about 8 hours 29 minutes.

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).

Airport information


A Spokane International Airport
City: Spokane, WA
Country: United States Flag of United States
IATA Code: GEG
ICAO Code: KGEG
Coordinates: 47°37′11″N, 117°32′2″W

B Idaho Falls Regional Airport
City: Idaho Falls, ID
Country: United States Flag of United States
IATA Code: IDA
ICAO Code: KIDA
Coordinates: 43°30′52″N, 112°4′15″W

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.

Time Difference

Spokane, WA

 PST

Idaho Falls, ID

 MST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 82 kg (181 pounds).

Frequent Flyer Miles Calculator

Spokane (GEG) → Idaho Falls (IDA).

Distance:
388
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
388

Round trip?