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Seattle–Ketchikan | SEA–KTN
Calculations with different methods
- 679.917 miles
- 1094.220 kilometers
- 590.831 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
- 678.919 miles
- 1092.615 kilometers
- 589.965 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Seattle–Tacoma International Airport (SEA) to Ketchikan International Airport (KTN) is 1 hour 47 minutes.
Time difference and current local times
The time difference between Seattle and Ketchikan is 1 hour. Ketchikan is 1 hour behind Seattle.
Seattle to Ketchikan flight map.
Frequent Flyer Miles Calculator
Seattle (SEA) → Ketchikan (KTN).