How far is Decatur, IL, from Seattle, WA?
The distance between Seattle (Seattle–Tacoma International Airport) and Decatur (Decatur Airport) is 1742 miles / 2803 kilometers / 1514 nautical miles.
The driving distance from Seattle (SEA) to Decatur (DEC) is 2148 miles / 3457 kilometers, and travel time by car is about 37 hours 34 minutes.
Seattle–Tacoma International Airport – Decatur Airport
Search flights
Distance from Seattle to Decatur
There are several ways to calculate the distance from Seattle to Decatur. Here are two standard methods:
Vincenty's formula (applied above)- 1741.795 miles
- 2803.148 kilometers
- 1513.579 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- 1737.640 miles
- 2796.460 kilometers
- 1509.967 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 Seattle to Decatur?
The estimated flight time from Seattle–Tacoma International Airport to Decatur Airport is 3 hours and 47 minutes.
What is the time difference between Seattle and Decatur?
The time difference between Seattle and Decatur is 2 hours. Decatur is 2 hours ahead of Seattle.
Flight carbon footprint between Seattle–Tacoma International Airport (SEA) and Decatur Airport (DEC)
On average, flying from Seattle to Decatur 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 Seattle to Decatur
See the map of the shortest flight path between Seattle–Tacoma International Airport (SEA) and Decatur Airport (DEC).
Airport information
| Origin | Seattle–Tacoma International Airport |
|---|---|
| City: | Seattle, WA |
| Country: | United States  |
| IATA Code: | SEA |
| ICAO Code: | KSEA |
| Coordinates: | 47°26′56″N, 122°18′32″W |
| Destination | Decatur Airport |
|---|---|
| City: | Decatur, IL |
| Country: | United States |
| IATA Code: | DEC |
| ICAO Code: | KDEC |
| Coordinates: | 39°50′4″N, 88°51′56″W |