How far is Seattle, WA, from Decatur, IL?

The distance between Decatur (Decatur Airport) and Seattle (Seattle Boeing Field) is 1742 miles / 2803 kilometers / 1514 nautical miles.

The driving distance from Decatur (DEC) to Seattle (BFI) is 2113 miles / 3401 kilometers, and travel time by car is about 37 hours 28 minutes.

Distance from Decatur to Seattle

There are several ways to calculate the distance from Decatur to Seattle. Here are two standard 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 planet.

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).

How long does it take to fly from Decatur to Seattle?

The estimated flight time from Decatur Airport to Seattle Boeing Field is 3 hours and 47 minutes.

What is the time difference between Decatur and Seattle?

The time difference between Decatur and Seattle is 2 hours. Seattle is 2 hours behind Decatur.

Flight carbon footprint between Decatur Airport (DEC) and Seattle Boeing Field (BFI)

On average, flying from Decatur to Seattle generates about 196 kg of CO2 per passenger, and 196 kilograms equals 431 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Decatur to Seattle

See the map of the shortest flight path between Decatur Airport (DEC) and Seattle Boeing Field (BFI).

Airport information

Origin	Decatur Airport
City:	Decatur, IL
Country:	United States
IATA Code:	DEC
ICAO Code:	KDEC
Coordinates:	39°50′4″N, 88°51′56″W

Destination	Seattle Boeing Field
City:	Seattle, WA
Country:	United States
IATA Code:	BFI
ICAO Code:	KBFI
Coordinates:	47°31′47″N, 122°18′7″W