Map of flight path and driving directions from Spokane to Ketchikan.
Shortest flight path between Spokane International Airport (GEG) and Ketchikan International Airport (KTN).
How far is Ketchikan from Spokane?
There are several ways to calculate distances between Spokane and Ketchikan. Here are two common methods:Vincenty's formula (applied above)
- 809.886 miles
- 1303.385 kilometers
- 703.772 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
- 808.246 miles
- 1300.746 kilometers
- 702.347 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 Ketchikan is 1 hour. Ketchikan is 1 hour behind Spokane.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 136 kg (299 pounds).
Frequent Flyer Miles Calculator
Spokane (GEG) → Ketchikan (KTN).