Map of flight path and driving directions from Seattle to Decatur.
Shortest flight path between Seattle Boeing Field (BFI) and Decatur Airport (DEC).
How far is Decatur from Seattle?
There are several ways to calculate distances between Seattle and Decatur. Here are two common methods:Vincenty's formula (applied above)
- 1741.983 miles
- 2803.451 kilometers
- 1513.742 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
- 1737.835 miles
- 2796.774 kilometers
- 1510.137 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 Seattle and Decatur is 2 hours. Decatur is 2 hours ahead of Seattle.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 196 kg (431 pounds).
Frequent Flyer Miles Calculator
Seattle (BFI) → Decatur (DEC).