How far is Seattle, WA, from Decatur, IL?
The distance between Decatur (Decatur Airport) and Seattle (Seattle–Tacoma International Airport) is 1742 miles / 2803 kilometers / 1514 nautical miles.
The driving distance from Decatur (DEC) to Seattle (SEA) is 2116 miles / 3405 kilometers, and travel time by car is about 37 hours 32 minutes.
Decatur Airport – Seattle–Tacoma International Airport
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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)- 1741.795 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 Decatur to Seattle?
The estimated flight time from Decatur Airport to Seattle–Tacoma International Airport 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–Tacoma International Airport (SEA)
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–Tacoma International Airport (SEA).
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–Tacoma International Airport |
|---|---|
| City: | Seattle, WA |
| Country: | United States |
| IATA Code: | SEA |
| ICAO Code: | KSEA |
| Coordinates: | 47°26′56″N, 122°18′32″W |